501-14-i Handles, Locks, Latches and Entry Systems 501-14-i SECTION 501-14 Handles, Locks, Latches and Entry Systems CONTENTS PAGE DIAGNOSIS AND TESTING Handles, Locks, Latches and Entry Systems... 501-14-2 Principles of Operation... 501-14-2 Inspection and Verification... 501-14-4 Symptom Chart... 501-14-5 Pinpoint Tests... 501-14-7
501-14-2 Handles, Locks, Latches and Entry Systems 501-14-2 DIAGNOSIS AND TESTING Handles, Locks, Latches and Entry Systems Special Tool(s) 73III Automotive Meter 105-R0057 or equivalent Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool Flex Probe Kit 105-R025C or equivalent Material Multi-Purpose Grease XG-4 and/or XL-5 Item Penetrating and Lock Lubricant (US); Penetrating Fluid (Canada) XL-1 (US); CXC-51-A (Canada) Specification ESB-M1C93-B Principles of Operation NOTE: The smart junction box (SJB) is also known as the generic electronic module (GEM). Power Locks The SJB controls the power lock/unlock feature of all of the vehicle doors, including the liftgate, to lock or unlock based on the input received from the door lock control switch, the keyless entry keypad or the remote keyless entry (RKE) transmitter. Power locking and unlocking of the doors function independently of the key position, vehicle speed or transmission position. The SJB activates internal relays to supply the correct voltage and grounds for the door lock actuators. The liftgate window glass is released, using the keyless entry keypad or the RKE transmitter, and does not operate if the vehicle speed is greater than 5 km/h (3 mph), the battery is disconnected and then reconnected, or if the module is disconnected and then reconnected causing the liftgate window glass release switch to enter the disable mode. The liftgate window glass release switch is reset by unlocking all the doors. Autolock The autolock feature locks all the doors when all the doors, including the liftgate, are closed, after the brake pedal is pressed, and the vehicle speed exceeds 20 km/h (12 mph) or higher for a minimum of 2 seconds. This feature also relocks the doors (if any doors were open) after the brake pedal is pressed, once the SJB receives door closed inputs from all door ajar switches and vehicle speed exceeds 20 km/h (12 mph) for a minimum of 2 seconds. The autolock feature can be enabled/disabled through module configuration, the ignition switch, the message center (if equipped) and the keyless entry keypad. The autolock feature also uses inputs from the key position, the stoplamp switch and vehicle speed through the controller area network (CAN) from the ABS module. Auto-Unlock The auto-unlocking feature unlocks all the doors when all of the following conditions are met:
501-14-3 Handles, Locks, Latches and Entry Systems 501-14-3 all the doors are closed the key is in the run position and the vehicle was in motion at a speed greater than 20 km/h (12 mph) for a minimum of 2 seconds since the last key start. Then the vehicle comes to a stop and the key is turned to the OFF or ACCY position the driver door is opened within 10 minutes of the key being turned to the OFF or ACCY position The doors do not auto-unlock if: the doors are locked using the door lock control switches. the doors are locked with the keyless entry keypad or the RKE transmitter within 10 minutes of turning the key to the ACC or OFF position. 10 minutes elapse and the driver door is not opened. Smart Unlock The smart unlock feature prevents the driver door from locking the vehicle with the key in the ignition lock cylinder. When the SJB receives a lock command from a door lock control switch, and the key is in the ignition lock cylinder (with the key in any position) with the one of the front doors open, the SJB commands the driver door to unlock. Anti-Scan Feature To provide added security, the keyless entry keypad is disabled for 1 minute after 35 button presses without a valid entry code being entered. The keyless entry keypad flashes during this 1-minute mode with all functionality disabled except for 7/8 and 9/0 still being allowed to lock the vehicle. Anti-Scan is turned off after 1 minute of keyless entry keypad inactivity. Unlocking the Doors and Liftgate with the Keyless Entry Keypad To unlock the driver door, enter either the factory set code or a personal code; each digit must be pressed within 5 seconds of the prior digit. The interior lamps illuminate. To unlock all doors, enter either the factory set code or a personal code (driver door unlocks) and press the 3/4 control within 5 seconds. To open the liftgate window glass, enter the factory set code or a personal code (driver door unlocks) and press the 5/6 control within 5 seconds. Remote Keyless Entry (RKE) Transmitter Lock/Unlock Control Unlock The RKE transmitter feature provides lock/unlock functions independently of key position, vehicle speed, or transmission position. The RKE transmitter feature provides a 2-step process, if enabled, for unlocking the doors. Upon receipt of the first request for unlocking the doors, the RKE control feature requests the SJB to unlock the driver door only. If another unlock request is received within 3 seconds of the first, the RKE transmitter feature requests the SJB to unlock all the doors. This feature can be disabled so that all the doors unlock on the first press of the UNLOCK button. Refer to Stepped Unlock Programming in this section for programming information. Remote Keyless Entry (RKE) Transmitter Lock/Unlock Control Lock The RKE transmitter feature requests that all the doors be locked when the lock button is pressed. On any press of the lock button with all doors closed, the SJB provides 1 flash of the parking lamps. If any door is ajar, no flash occurs. As soon as the last door is closed, the SJB provides the flash of the parking lamps. If 2 presses of the lock button are received within 3 seconds, the horn chirps once, and the parking lamps flash twice to indicate that all the doors are closed and locked. If any door is ajar when the second lock request is received within 3 seconds of the first, the RKE transmitter feature requests the SJB chirp the horn twice without flashing the parking lamps to indicate it locked all the doors but 1 or more doors are ajar. When the key is in the ON or START position, the parking lamp flashes and horn chirp confirmations do not occur. Panic Alarm The panic alarm feature provides audible and visual alarms which are evident from the exterior of the vehicle. The panic alarm feature requests that the parking lamps are flashed and the horn sounds until deactivation. The flashing of the outputs occurs simultaneously. Activation of the panic alarm is accomplished by pressing the panic button on an RKE transmitter whenever the key is in the OFF or ACC positions. At all other times this feature is disabled. Deactivation of an active PANIC alarm is accomplished by any of the following actions: a second press of the RKE transmitter panic button. the key is switched out of the OFF or ACC position. a period of 2 minutes and 45 seconds has elapsed since the initial activation. Keyless Entry Keypad The keyless entry keypad, located on the exterior of the driver door, provides a method for customers to access their vehicle without a key or RKE transmitter. The keyless entry keypad feature: locks all doors. unlocks only the driver door. unlocks all doors. programs/erases the customer key codes. enables/disables auto-unlocking enables/disables autolocking. releases the liftgate window glass.
501-14-4 Handles, Locks, Latches and Entry Systems 501-14-4 The keyless entry keypad feature operates independently of key position status, vehicle speed, or transmission position. When a keyless entry keypad button is pressed, the keyless entry keypad buttons illuminate to provide better visibility. If the lock all doors command is entered or 5 seconds have elapsed since the last button press, the illumination is turned off. Each vehicle equipped with an keyless entry keypad is programmed with a 5-digit entry code. This code is provided to the customer through a wallet card in the Owner's Literature package. In addition, this code is available through a scan tool and is also printed on the SJB label. When entering codes each digit must be entered within 5 seconds of the previous button press. Locking the Doors with the Keyless Entry Keypad It is not necessary to enter the factory set or personal code prior to locking all doors. To lock all doors, press the 7/8 and 9/0 controls at the same time. Inspection and Verification 1. Verify the customer concern. 2. Visually inspect the following for obvious signs of mechanical or electrical damage. Visual Inspection Chart Mechanical Electrical Latches Battery junction box (BJB) fuse 3 (50A) Smart junction box (SJB) fuse 6 (20A) Circuitry Remote keyless entry (RKE) transmitter Keyless entry keypad 3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step. 4. If the cause is not visually evident, connect the scan tool to the data link connector (DLC). 5. NOTE: The vehicle communication module (VCM) LED prove-out confirms voltage and ground from the DLC are provided to the VCM. If the scan tool does not communicate with the VCM: Check the connection to the vehicle. Refer to Section 418-00 to diagnose no communication with the scan tool. 6. If the scan tool does not communicate with the vehicle: Verify the ignition key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to Section 418-00 to diagnose no response from the PCM. 7. Carry out the network test. If the scan tool responds with no communication for multiple modules, refer to Section 418-00. If the scan tool responds with no communication with the SJB, refer to Section 419-10. If the network test passes, retrieve and record the continuous memory DTCs. 8. Clear the continuous DTCs and carry out the self-test diagnostics for the SJB. 9. If the DTCs retrieved are related to the concern, go to Smart Junction Box (SJB) DTC Chart. For all other DTCs, refer to Section 419-10. 10. If no DTCs related to the concern are retrieved, GO to Symptom Chart. Smart Junction Box (SJB) DTC Chart DTC Description Action B1300 Power Door Lock Circuit Failure CLEAR the DTCs. REPEAT the self-test. If DTC B1300 is still present, INSTALL a new SJB. REFER to Section 419-10. PROGRAM all the RKE transmitters. CLEAR the DTCs. REPEAT the self-test. B1396 Power Door Lock Circuit Short to Battery CLEAR the DTCs. REPEAT the self-test. If DTC B1396 is still present, INSTALL a new SJB. REFER to Section 419-10. PROGRAM all the RKE transmitters. CLEAR the DTCs. REPEAT the self-test.
501-14-5 Handles, Locks, Latches and Entry Systems 501-14-5 Smart Junction Box (SJB) DTC Chart (Continued) DTC Description Action B1397 Power Door Unlock Circuit Short to Battery CLEAR the DTCs. REPEAT the self-test. If DTC B1397 is still present, INSTALL a new SJB. REFER to Section 419-10. PROGRAM all the RKE transmitters. CLEAR the DTCs. REPEAT the self-test. B1982 Driver's Door Unlock Relay Circuit Failure CLEAR the DTCs. REPEAT the self-test. If DTC B1982 is still present, INSTALL a new SJB. REFER to Section 419-10. PROGRAM all the RKE transmitters. CLEAR the DTCs. REPEAT the self-test. B1983 Driver's Door Unlock Relay Circuit Short to Battery CLEAR the DTCs. REPEAT the self-test. If DTC B1983 is still present, INSTALL a new SJB. REFER to Section 419-10. PROGRAM all the RKE transmitters. CLEAR the DTCs. REPEAT the self-test. B2250 All Doors Unlock Relay Circuit Failure CLEAR the DTCs. REPEAT the self-test. If DTC B2250 is still present, INSTALL a new SJB. REFER to Section 419-10. PROGRAM all the RKE transmitters. CLEAR the DTCs. REPEAT the self-test. B2276 Less Than 2 Transmitters Programmed GO to Pinpoint Test H. B2425 Remote Keyless Entry Out of Synchronization GO to Pinpoint Test K. B2574 Drivers Door LOCK Switch Short to Ground GO to Pinpoint Test F. B2575 Drivers Door UNLOCK Switch Short to Ground GO to Pinpoint Test F. B2667 Liftglass Release Switch Circuit Failure GO to Pinpoint Test M. B2670 Liftglass Release Relay Coil Short to Vbatt CLEAR the DTCs. REPEAT the self-test. If DTC B2670 is still present, INSTALL a new SJB. REFER to Section 419-10. PROGRAM all the RKE transmitters. CLEAR the DTCs. REPEAT the self-test. B2671 Liftglass Release Relay Coil Circuit Failure CLEAR the DTCs. REPEAT the self-test. If DTC B2671 is still present, INSTALL a new SJB. REFER to Section 419-10. PROGRAM all the RKE transmitters. CLEAR the DTCs. REPEAT the self-test. B2695 Keypad_A Switch Circuit Failure GO to Pinpoint Test G. B2696 Keypad_B Switch Circuit Failure GO to Pinpoint Test G. B2697 Keypad_C Switch Circuit Failure GO to Pinpoint Test G. All other DTCs REFER to Section 419-10. Symptom Chart Electrical Symptom Chart Condition Possible Sources Action communication with the smart junction box (SJB) A single/more than one door lock is inoperative Fuse(s) Circuitry Circuitry Door lock actuators Liftgate actuator All door locks are inoperative Fuse Circuitry Door lock actuators Liftgate actuator All door locks are inoperative from one switch Panic feature is inoperative/does not operate correctly Circuitry Door lock switch Remote keyless entry (RKE) transmitter REFER to Section 418-00. GO to Pinpoint Test A. GO to Pinpoint Test B. GO to Pinpoint Test C. GO to Pinpoint Test D.
501-14-6 Handles, Locks, Latches and Entry Systems 501-14-6 Electrical Symptom Chart (Continued) Condition Possible Sources Action The autolock does not operate correctly Programming Door ajar switches The door locks operate only one way Circuitry Door lock switch The doors do not lock/unlock using the keyless entry keypad The doors do not lock/unlock using the remote keyless entry (RKE) transmitter The memory seats do not operate correctly using the remote keyless entry (RKE) transmitter The keyless entry keypad illumination is inoperative The remote keyless entry (RKE) transmitter has poor range performance The remote keyless entry (RKE) transmitter is out of synchronization Circuitry Keyless entry keypad RKE transmitter battery RKE transmitter RKE transmitter programming Aftermarket system Circuitry Feature is not activated Memory seats Circuitry Keyless entry keypad Aftermarket systems High power devices TV/radio transmission towers RKE transmitter RKE transmitter RKE transmitter button pressed a substantial amount of times while outside the range of the vehicle The smart lock does not operate correctly Driver door ajar switch The liftgate glass actuator is inoperative Circuitry Liftgate window glass switch Liftgate window glass actuator The liftgate glass actuator does not release using the remote keyless entry (RKE) transmitter RKE transmitter battery RKE transmitter The auto-unlock does not operate correctly Programming Door ajar switches The remote keyless entry (RKE) two step door unlocking does not operate correctly GO to Pinpoint Test E. GO to Pinpoint Test F. GO to Pinpoint Test G. GO to Pinpoint Test H. VERIFY that the memory is activated and if activated, REFER to Section 501-10 for diagnosis of the memory seats. If not, activate the RKE memory function. REFER to Remote Memory Activation in this section. GO to Pinpoint Test I. GO to Pinpoint Test J. GO to Pinpoint Test K. GO to Pinpoint Test L. GO to Pinpoint Test M. GO to Pinpoint Test N. GO to Pinpoint Test O. Two step door unlocking is disabled PROGRAM the two step door unlocking. REFER to Stepped Unlock Programming in this section. TEST the system for normal Mechanical Symptom Chart Condition Possible Sources Action Hard to open/close door from either door handle Door alignment Door hinges Striker adjustment GO to Pinpoint Test P.
501-14-7 Handles, Locks, Latches and Entry Systems 501-14-7 Mechanical Symptom Chart (Continued) Condition Possible Sources Action A door is difficult/does not open from the exterior door handle A door is difficult/does not open from the interior door handle Door latch Broken or binding linkage Exterior door handle to latch rod adjustment Exterior door handle Door latch Broken or binding linkage Door latch Exterior door release handle sticks Binding linkage Broken handle return spring Exterior door handle to latch rod adjustment Door latch Interior door release handle sticks Binding cable Broken handle return spring Door latch Manual interior lock/unlock rod inoperative Bent or binding lock rod Door latch Squeak/rattle/chucking noise from door Door alignment Striker adjustment Door latch Manual door lock cylinder inoperative Bent or binding lock rod and lever Door lock cylinder Door latch Unable to remove the key from the ignition lock cylinder Circuitry Transmission selector lever Binding steering column components Ignition lock cylinder Ignition switch GO to Pinpoint Test Q. GO to Pinpoint Test R. GO to Pinpoint Test S. GO to Pinpoint Test T. Operate the door lock rod manually while observing the door lock rod for any binding or if the rod is bent. If the rod is bent or damaged, REPAIR as necessary. TEST the system for normal If the rod is OK, REFER to Front Door Latch, Rear Door Latch or Liftgate Latch in this section. TEST the system for normal GO to Pinpoint Test U. GO to Pinpoint Test V. GO to Pinpoint Test W. Pinpoint Tests Pinpoint Test A: A Single/More Than One Door Lock Is Inoperative Refer to Wiring Diagrams Cell 110, Power Door Locks for schematic and connector information. Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information. rmal Operation The door lock control switches provide a ground, circuit GD133 (BK) or circuit GD151 (BK/GN) for the smart junction box (SJB) lock and unlock signal circuits CPL42 (GY/YE) and CPL43 (VT/GY). The door lock actuator circuits CPL11 (GY/BN), CPL51 (BU/GN) and CPL52 (VT/GY) are at ground potential in the SJB when the lock and unlock relays are not energized. When the SJB receives a lock request through circuit CPL42 (GY/YE), the SJB processes the lock request and energizes the all lock relay, supplying voltage to circuit CPL11 (GY/BN) to lock the doors. Circuits CPL51 (BU/GN) and CPL52 (VT/GY) are at ground potential within the SJB. When the SJB receives an unlock request through circuit CPL43 (VT/GY), the SJB processes the unlock request and energizes the all unlock relay and driver unlock relay supplying voltage to circuits CPL52 (VT/GY) and CPL51 (BU/GN) to unlock the doors. Circuit CPL11 (GY/BN) is at ground potential within the SJB. Circuit CPL11 (GY/BN) open Circuit CPL51 (BU/GN) open Circuit CPL52 (VT/GY) open
501-14-8 Handles, Locks, Latches and Entry Systems 501-14-8 Door lock actuators Liftgate lock actuator PINPOINT TEST A: A SINGLE/MORE THAN ONE DOOR LOCK IS INOPERATIVE NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector. A1 A2 A3 A4 CHECK THE DOOR LATCH FOR BINDING Lock and unlock the inoperative door lock using the door lock rod. Does the door lock and unlock? CHECK THE LOCK ROD FOR BINDING Operate the door lock rod manually while observing the door lock rod for any binding or if the rod is bent. Is the door lock rod bent or binding? CHECK THE PASSENGER DOOR LOCKS Check the passenger door locks. Are all of the passenger door locks inoperative? CHECK CIRCUIT CPL52 (VT/GY) FOR AN OPEN Disconnect: Right Front Door Lock Actuator C603. Disconnect: SJB C2280a. Measure the resistance between the right front door lock actuator C603-2, circuit CPL52 (VT/GY), harness side and the SJB C2280a-1, circuit CPL52 (VT/GY), harness side. GO to A3. GO to A2. REPAIR as necessary. TEST the system for normal INSTALL a new door latch. REFER to Front Door Latch, Rear Door Latch or Liftgate Latch in this section. TEST the system for normal GO to A4. GO to A5. A5 A6 Is the resistance less than 5 ohms? CHECK THE DRIVER DOOR LOCK Check to see if the driver door lock is the inoperative lock. Is the driver door lock inoperative? CHECK THE DRIVER DOOR LOCK CIRCUITS FOR AN OPEN Disconnect: Driver Door Lock Actuator C525. While pressing a door lock control switch to the LOCK or UNLOCK position, measure the voltage between the driver door lock actuator C525-2, circuit CPL51 (BU/GN), harness side and the driver door lock actuator C525-1, circuit CPL11 (GY/BN), harness side. GO to A10. REPAIR the circuit. TEST the system for normal GO to A6. GO to A8. INSTALL a new driver door lock actuator. REFER to Front Door Lock Actuator in this section. TEST the system for normal
501-14-9 Handles, Locks, Latches and Entry Systems 501-14-9 PINPOINT TEST A: A SINGLE/MORE THAN ONE DOOR LOCK IS INOPERATIVE (Continued) A6 CHECK THE DRIVER DOOR LOCK CIRCUITS FOR AN OPEN (Continued) A7 Is the voltage greater than 10 volts when the door lock control switch is pressed? CHECK CIRCUIT CPL51 (BU/GN) FOR AN OPEN Disconnect: SJB C2280a. Measure the resistance between the driver door lock actuator C525-2, circuit CPL51 (BU/GN), harness side and the SJB C2280a-17, circuit CPL51 (BU/GN), harness side. GO to A7. A8 Is the resistance less than 5 ohms? CHECK CIRCUIT CPL52 (VT/GY) FOR AN OPEN Disconnect: Suspect Door Latch. Disconnect: SJB C2280a. Measure the resistance between the suspect door lock actuator and the SJB as follows: GO to A9. REPAIR the circuit. TEST the system for normal Door Lock Actuator Connector-Pin Circuit SJB Connector-Pin A9 C457-2 (Liftgate) CPL52 (VT/GY) C2280a-1 C603-2 (RH front) CPL52 (VT/GY) C2280a-1 C704-2 (LH rear) CPL52 (VT/GY) C2280a-1 C804-2 (RH rear) CPL52 (VT/GY) C2280a-1 Are the resistances less than 5 ohms? CHECK CIRCUIT CPL11 (GY/BN) FOR AN OPEN Measure the resistance between the suspect door lock actuator and the SJB as follows: GO to A9. REPAIR the circuit in question. TEST the system for normal If the inoperative lock is the driver door lock, GO to A10. If the inoperative lock is the RH front door lock, the LH rear door lock, the RH rear door lock or the liftgate lock, INSTALL a new door lock actuator. REFER to Front Door Lock Actuator, Rear Door Lock Actuator or
501-14-10 Handles, Locks, Latches and Entry Systems 501-14-10 PINPOINT TEST A: A SINGLE/MORE THAN ONE DOOR LOCK IS INOPERATIVE (Continued) A9 CHECK CIRCUIT CPL11 (GY/BN) FOR AN OPEN (Continued) Door Lock Actuator Connector-Pin Circuit SJB Connector-Pin A10 C457-1 (Liftgate) CPL11 (GY/BN) C2280a-1 C525-1 (Driver) CPL11 (GY/BN) C2280a-4 C603-1 (RH front) CPL11 (GY/BN) C2280a-4 C704-1 (LH rear) CPL11 (GY/BN) C2280a-4 C804-1 (RH rear) CPL11 (GY/BN) C2280a-4 Are the resistances less than 5 ohms? CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Liftgate Latch Actuator in this section. TEST the system for normal REPAIR the circuit in question. TEST the system for normal INSTALL a new SJB. REFER to Section 419-10. TEST the system for normal The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal Pinpoint Test B: All Door Locks Are Inoperative Refer to Wiring Diagrams Cell 110, Power Door Locks for schematic and connector information. Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information. rmal Operation The door lock control switches provide a ground, circuit GD133 (BK) or circuit GD151 (BK/GN) for the smart junction box (SJB) lock and unlock signal circuits CPL42 (GY/YE) and CPL43 (VT/GY). The door lock actuator circuits CPL11 (GY/BN), CPL51 (BU/GN) and CPL52 (VT/GY) are at ground potential in the SJB when the lock and unlock relays are not energized. When the SJB receives a lock request through circuit CPL42 (GY/YE), the SJB processes the lock request and energizes the all lock relay, supplying voltage to circuit CPL11 (GY/BN) to lock the doors. Circuits CPL51 (BU/GN) and CPL52 (VT/GY) are at ground potential within the SJB. When the SJB receives an unlock request through circuit CPL43 (VT/GY), the SJB processes the unlock request and energizes the all unlock relay and driver unlock relay supplying voltage to circuits CPL52 (VT/GY) and CPL51 (BU/GN) to unlock the doors. Circuit CPL11 (GY/BN) is at ground potential within the SJB. Fuse Circuit CPL11 (GY/BN) open or short to ground Circuit CPL51 (BU/GN) short to ground Circuit CPL52 (VT/GY) short to ground Circuit CPL59 (BN/BU) short to ground Door lock actuator PINPOINT TEST B: ALL DOOR LOCKS ARE INOPERATIVE NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector. B1 CHECK CIRCUIT CPL11 (GY/BN) FOR AN OPEN OR A SHORT TO GROUND Disconnect: Right Front Door Lock Actuator C603. Disconnect: SJB C2280a. Measure the resistance between the right front door lock actuator C603-1, circuit CPL11 (GY/BN), harness side and the SJB C2280a-4, circuit CPL11 (GY/BN), harness side; and between the right front door GO to B2.
501-14-11 Handles, Locks, Latches and Entry Systems 501-14-11 PINPOINT TEST B: ALL DOOR LOCKS ARE INOPERATIVE (Continued) B1 CHECK CIRCUIT CPL11 (GY/BN) FOR AN OPEN OR A SHORT TO GROUND (Continued) lock actuator C603-1, circuit CPL11 (GY/BN), harness side and ground. B2 Is the resistance less than 5 ohms between the right front door lock actuator and the vehicle security module, and greater than 10,000 ohms between the right front door lock actuator and ground? CHECK CIRCUIT CPL52 (VT/GY) FOR A SHORT TO GROUND Measure the resistance between the right front door lock actuator C603-2, circuit CPL52 (VT/GY), harness side and ground. REPAIR the circuit. VERIFY the SJB fuse F6 (20A) is OK. TEST the system for normal GO to B3. B3 Is the resistance greater than 10,000 ohms? CHECK CIRCUIT CPL51 (BU/GN) FOR A SHORT TO GROUND Disconnect: Driver Door Lock Actuator C525. Measure the resistance between the driver door lock actuator C525-2, circuit CPL51 (BU/GN), harness side and ground. REPAIR the circuit. VERIFY the SJB fuse F6 (20A) is OK. TEST the system for normal B4 Is the resistance greater than 10,000 ohms? CHECK CIRCUIT CPL59 (BN/BU) FOR A SHORT TO GROUND GO to B4. REPAIR the circuit. VERIFY the SJB fuse F6 (20A) is OK. TEST the system for normal
501-14-12 Handles, Locks, Latches and Entry Systems 501-14-12 B4 PINPOINT TEST B: ALL DOOR LOCKS ARE INOPERATIVE (Continued) CHECK CIRCUIT CPL59 (BN/BU) FOR A SHORT TO GROUND (Continued) Disconnect: Liftgate Glass Actuator C4040. Measure the resistance between the liftgate glass actuator C4040-1, circuit CPL59 (BN/BU), harness side and ground. B5 Is the resistance greater than 10,000 ohms? CHECK THE SUSPECT DOOR LOCK ACTUATOR Connect a fused (5A) jumper wire between the suspect door lock actuator connector pin 1, component side and the battery positive terminal; and connect another jumper wire between the suspect door lock actuator connector pin 2, component side and ground. GO to B5. REPAIR the circuit. VERIFY the SJB fuse F6 (20A) is OK. TEST the system for normal Connect a fused (5A) jumper wire between the suspect door lock actuator connector pin 2, component side and the battery positive terminal; and connect another jumper wire between the suspect door lock actuator connector pin 1, component side and ground. B6 Does the door lock actuator operate correctly? CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins REMOVE the jumper wires. GO to B6. INSTALL a new door lock actuator. REFER to Front Door Lock Actuator, Rear Door Lock Actuator or Liftgate Latch Actuator in this section. VERIFY the SJB fuse F6 (20A) is OK. TEST the system for normal INSTALL a new SJB. REFER to Section 419-10. TEST the system for normal
501-14-13 Handles, Locks, Latches and Entry Systems 501-14-13 PINPOINT TEST B: ALL DOOR LOCKS ARE INOPERATIVE (Continued) B6 CHECK FOR CORRECT SJB OPERATION (Continued) pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal Pinpoint Test C: All Door Locks Are Inoperative From One Switch Refer to Wiring Diagrams Cell 110, Power Door Locks for schematic and connector information. Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information. rmal Operation The door lock control switches provide a ground, circuit GD133 (BK) or circuit GD151 (BK/GN) for the smart junction box (SJB) lock and unlock signal circuits CPL42 (GY/YE) and CPL43 (VT/GY). The door lock actuator circuits CPL11 (GY/BN), CPL51 (BU/GN) and CPL52 (VT/GY) are at ground potential in the SJB when the lock and unlock relays are not energized. When the SJB receives a lock request through circuit CPL42 (GY/YE), the SJB processes the lock request and energizes the all lock relay, supplying voltage to circuit CPL11 (GY/BN) to lock the doors. Circuits CPL51 (BU/GN) and CPL52 (VT/GY) are at ground potential within the SJB. When the SJB receives an unlock request through circuit CPL43 (VT/GY), the SJB processes the unlock request and energizes the all unlock relay and driver unlock relay supplying voltage to circuits CPL52 (VT/GY) and CPL51 (BU/GN) to unlock the doors. Circuit CPL11 (GY/BN) is at ground potential within the SJB. Circuit GD133 (BK) open Circuit GD151 (BK/GN) open Door lock control switch PINPOINT TEST C: ALL DOOR LOCKS ARE INOPERATIVE FROM ONE SWITCH NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector. C1 CHECK THE DOOR LOCK SWITCH GROUND CIRCUITS FOR AN OPEN Disconnect: Suspect Door Lock Switch. Measure the resistance between the suspect door lock control switch pin 4, harness side and ground. GO to C2. C2 Is the resistance less than 5 ohms? CHECK THE SUSPECT DOOR LOCK SWITCH Carry out the door lock switch component test for the suspect door lock switch. Refer to Wiring Diagrams Cell 149 for component testing. Is the suspect door lock switch OK? REPAIR circuit GD133 (BK) for the driver door lock switch, or circuit GD151 (BK/GN) for the passenger door lock switch. TEST the system for normal GO to C3. INSTALL a new door lock switch. REFER to Door Lock Control Switch in this section. TEST the system for normal
501-14-14 Handles, Locks, Latches and Entry Systems 501-14-14 PINPOINT TEST C: ALL DOOR LOCKS ARE INOPERATIVE FROM ONE SWITCH (Continued) C3 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Pinpoint Test D: Panic Feature Is Inoperative/Does t Operate Correctly INSTALL a new SJB. REFER to Section 419-10. TEST the system for normal The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal rmal Operation When the panic feature is activated, the smart junction box (SJB) provides an on then off ground to the horn and parking lamp relays. The relays close and then open, supplying an on then off again voltage to the horns and the parking lamps. The horn and the parking lamps provide a visual and an audible alert. Remote keyless entry (RKE) transmitter PINPOINT TEST D: PANIC FEATURE IS INOPERATIVE/DOES NOT OPERATE CORRECTLY D1 D2 D3 D4 D5 VERIFY OPERATION OF THE HORN Operate the horn through the steering wheel switch. Does the horn operate correctly? VERIFY THE PARKING LAMP OPERATION Turn on the parking lamps with the headlamp switch. Do the parking lamps operate correctly? CHECK THE RKE TRANSMITTER OPERATION Unlock and lock the doors using the RKE transmitter buttons. Do the doors lock and unlock correctly? CHECK THE RKE TRANSMITTER SIGNAL TO THE SJB Ignition ON. Enter the following diagnostic mode on the scan tool: SJB PIDs. Observe the SJB TNSMT_CMD PID while pressing the panic button on the RKE transmitter. Does the PID value agree with the button press? CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? GO to D2. REFER to Section 413-06. GO to D3. REFER to Section 417-01. GO to D4. GO to Symptom Chart in this section. GO to D5. Pinpoint Test E: The Autolock Does t Operate Correctly Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information. REPLACE the RKE transmitter. PROGRAM all the RKE transmitters. REFER to Remote Keyless Entry (RKE) Transmitter Programming in this section. TEST the system for normal INSTALL a new SJB. REFER to Section 419-10. TEST the system for normal The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal
501-14-15 Handles, Locks, Latches and Entry Systems 501-14-15 rmal Operation The smart junction box (SJB) energizes the lock relay based on input from the ajar switches, the ignition switch, the transmission range (TR) sensor and the vehicle speed signal (VSS). The SJB locks the doors when the following conditions are met: all the doors are closed, the ignition switch is in the ON position, the vehicle is shifted into any gear, putting the vehicle in motion, and the vehicle attains a speed greater than 20 km/h (12 mph). Programming Door ajar switches E1 E2 E3 E4 E5 PINPOINT TEST E: THE AUTOLOCK DOES NOT OPERATE CORRECTLY VERIFY THE AUTOLOCK FEATURE IS ENABLED Verify the autolock feature is enabled. Refer to Autolock and Auto- Unlock Programming in this section. Is the autolock feature enabled? CHECK THE INTERIOR LAMP OPERATION Open and close each door, liftgate and liftgate window glass while checking the interior lamp Do the interior lamps operate correctly? CHECK THE SJB IGNITION SWITCH PID Ignition ON. Enter the following diagnostic mode on the scan tool: SJB PIDs. Monitor the SJB GEM_IGN PID. Is the correct value received? CHECK THE SJB DIGITAL TR SENSOR AND VSS PIDs Enter the following diagnostic mode on the scan tool: SJB PIDs. Monitor the SJB TRANSGEAR and VSS_GEM PIDs. Are the correct values received? CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? GO to E2. PROGRAM the autolock feature. REFER to Autolock and Auto-Unlock Programming in this section. GO to E3. REFER to Section 417-02. GO to E4. REFER to Section 211-05. GO to E5. REFER to Section 413-01. INSTALL a new SJB. REFER to Section 419-10. TEST the system for normal The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal Pinpoint Test F: The Door Locks Operate Only One Way Refer to Wiring Diagrams Cell 110, Power Door Locks for schematic and connector information. Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information. rmal Operation The door lock control switches provide a ground, circuit GD133 (BK) or circuit GD151 (BK/GN) for the smart junction box (SJB) lock and unlock signal circuits CPL42 (GY/YE) and CPL43 (VT/GY). The door lock actuator circuits CPL11 (GY/BN), CPL51 (BU/GN) and CPL52 (VT/GY) are at ground potential in the SJB when the lock and unlock relays are not energized. When the SJB receives a lock request through circuit CPL42 (GY/YE), the SJB processes the lock request and energizes the all lock relay, supplying voltage to circuit CPL11 (GY/BN) to lock the doors. Circuits CPL51 (BU/GN) and CPL52 (VT/GY) are at ground potential within the SJB.
501-14-16 Handles, Locks, Latches and Entry Systems 501-14-16 When the SJB receives an unlock request through circuit CPL43 (VT/GY), the SJB processes the unlock request and energizes the all unlock relay and driver unlock relay supplying voltage to circuits CPL52 (VT/GY) and CPL51 (BU/GN) to unlock the doors. Circuit CPL11 (GY/BN) is at ground potential within the SJB. DTC B2574 is an on-demand DTC that sets if the SJB detects a short to ground on the driver door lock switch circuit CPL42 (GY/YE). DTC B2575 is an on-demand DTC that sets if the SJB detects a short to ground on the driver door unlock switch circuit CPL43 (VT/GY). Circuit CPL42 (GY/YE) open or short to ground Circuit CPL43 (VT/GY) open or short to ground Door lock switch PINPOINT TEST F: THE DOOR LOCKS OPERATE ONLY ONE WAY NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector. F1 F2 F3 RETRIEVE THE RECORDED SJB DTCs FROM THE ON-DEMAND SELF-TEST Check for recorded SJB DTCs from the on-demand self-test. Are any DTCs recorded? REPEAT THE SJB ON-DEMAND SELF-TEST Ignition OFF. Disconnect: Suspect Door Lock Switch. Ignition ON. Clear the DTCs, then repeat the SJB on-demand self-test. Is DTC B2574 or B2575 recorded? CHECK CIRCUITS CPL42 (GY/YE) AND CPL43 (VT/GY) FOR AN OPEN Ignition OFF. Disconnect: Suspect Door Lock Switch. Disconnect: SJB C2280b. Measure the resistance between the suspect door lock switch C505-1 (driver) or C605-1 (passenger), circuit CPL42 (GY/YE), harness side and SJB C2280b-27, circuit CPL42 (GY/YE), harness side; and between the suspect door lock switch C505-3 (driver) or C605-3 (passenger), circuit CPL43 (VT/GY), harness side and the SJB C2280b-26, circuit CPL43 (VT/GY), harness side. For DTC B2574 or B2575, GO to F2. For all other SJB DTCs, REFER to Smart Junction Box (SJB) DTC Chart in this section. GO to F3. GO to F4. INSTALL a new door lock switch for the switch in question. REFER to Door Lock Control Switch in this section. CLEAR the DTCs. REPEAT the self-test. F4 Are the resistances less than 5 ohms? GO to F5. CHECK CIRCUITS CPL42 (GY/YE) AND CPL43 (VT/GY) FOR SHORT TO GROUND Measure the resistance between the suspect door lock switch C505-1 (driver) or C605-1 (passenger), circuit CPL42 (GY/YE), harness side REPAIR the circuit in question. TEST the system for normal GO to F6.
501-14-17 Handles, Locks, Latches and Entry Systems 501-14-17 PINPOINT TEST F: THE DOOR LOCKS OPERATE ONLY ONE WAY (Continued) F4 CHECK CIRCUITS CPL42 (GY/YE) AND CPL43 (VT/GY) FOR SHORT TO GROUND (Continued) and ground; and between the suspect door lock switch C505-3 (driver) or C605-3 (passenger), circuit CPL43 (VT/GY), harness side and ground. F5 F6 Are the resistances greater than 10,000 ohms? CHECK THE SUSPECT DOOR LOCK SWITCH Carry out the door lock switch component test for the suspect door lock switch. Refer to Wiring Diagrams Cell 149 for component testing. Is the suspect door lock switch OK? CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. GO to F6. INSTALL a new door lock switch as necessary. REFER to Door Lock Control Switch in this section. TEST the system for normal INSTALL a new SJB. REFER to Section 419-10. CLEAR the DTCs. REPEAT the self-test. The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. Pinpoint Test G: The Doors Do t Lock/Unlock Using The Keyless Entry Keypad Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information. rmal Operation The smart junction box (SJB) energizes the lock or unlock relays based upon input from the keyless entry keypad. The keyless entry keypad uses circuits CPK29 (GY/BU), CPK29 (GY/BU) and CPK31 (YE/GN) to send signals to the SJB by grounding the selected circuit through the keyless entry keypad on circuit RPK27 (BU). The SJB locks or unlocks the doors based on keyless entry keypad input. DTC B2695 is an on-demand DTC that sets if the SJB detects a short to ground on the keyless entry keypad switch input circuit CPK29 (GY/BU). DTC B2696 is an on-demand DTC that sets if the SJB detects a short to ground on the keyless entry keypad switch input circuit CPK30 (VT/GN). DTC B2697 is an on-demand DTC that sets if the SJB detects a short to ground on the keyless entry keypad switch input circuit CPK31 (YE/GN). Circuit CPK29 (GY/BU) open or short to ground Circuit CPK30 (VT/GN) open or short to ground Circuit CPK31 (YE/GN) open or short to ground Circuit RPK27 (BU) open Keyless entry keypad
501-14-18 Handles, Locks, Latches and Entry Systems 501-14-18 PINPOINT TEST G: THE DOORS DO NOT LOCK/UNLOCK USING THE KEYLESS ENTRY KEYPAD NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector. G1 G2 G3 G4 RETRIEVE THE RECORDED SJB DTCs FROM THE ON-DEMAND SELF-TEST Check for recorded SJB DTCs from the on-demand self-test. Are any DTCs recorded? REPEAT THE SJB ON-DEMAND SELF-TEST Ignition OFF. Disconnect: Keyless Entry Keypad C500. Ignition ON. Clear the DTCs, then repeat the SJB on-demand self-test. Is DTC B2695, B2696 or B2697 recorded? CHECK THE SJB KEYPAD SWITCH PIDs Enter the following diagnostic mode on the scan tool: SJB PIDs. Observe the KEY_PAD PID while pressing each keyless entry keypad button. Do the PID values agree with the keyless entry keypad button positions? CHECK THE KEYLESS ENTRY KEYPAD SIGNAL CIRCUITS FOR AN OPEN Disconnect: SJB C2280b. Disconnect: Keyless Entry Keypad C500. Measure the resistance between the SJB C2280b, harness side and the keyless entry keypad C500, harness side as follows: For DTC B2695, B2696 or B2697, GO to G2. For all other SJB DTCs, REFER to Smart Junction Box (SJB) DTC Chart in this section. GO to G3. GO to G5. INSTALL a new keyless entry keypad. REFER to Keyless Entry Keypad in this section. CLEAR the DTCs. REPEAT the self-test. GO to G6. GO to G4. G5 SJB Connector-Pin Circuit Keyless Entry Keypad Connector- Pin C2280b-23 CPK29 (GY/BU) C500-1 C2280b-24 CPK30 (VT/GN) C500-3 C2280b-25 CPK31 (YE/GN) C500-7 C2280b-22 RPK27 (BU) C500-6 Are the resistances less than 5 ohms? CHECK THE KEYLESS ENTRY KEYPAD SIGNAL CIRCUITS FOR A SHORT TO GROUND Ignition OFF. Disconnect: SJB C2280b. Measure the resistance between the SJB C2280b harness side and ground as follows: INSTALL a new keyless entry keypad. REFER to Keyless Entry Keypad in this section. TEST the system for normal REPAIR the circuit. TEST the system for normal G6 SJB Connector-Pin Circuit C2280b-23 CPK29 (GY/BU) C2280b-24 CPK30 (VT/GN) C2280b-25 CPK31 (YE/GN) Are the resistances greater than 10,000 ohms? CHECK FOR CORRECT SJB OPERATION GO to G6. REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
501-14-19 Handles, Locks, Latches and Entry Systems 501-14-19 G6 PINPOINT TEST G: THE DOORS DO NOT LOCK/UNLOCK USING THE KEYLESS ENTRY KEYPAD (Continued) CHECK FOR CORRECT SJB OPERATION (Continued) Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Pinpoint Test H: The Doors Do t Lock/Unlock Using The Remote Keyless Entry (RKE) Transmitter INSTALL a new SJB. REFER to Section 419-10. CLEAR the DTCs. REPEAT the self-test. The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. rmal Operation Remote locking and unlocking of the doors is accomplished by the smart junction box (SJB) when it receives a command message from the RKE transmitter. The SJB processes the command message and energizes the appropriate lock/unlock relay to lock or unlock the doors. DTC B2276 is a continuous DTC that sets when the SJB detects that less than 2 transmitters are programmed. RKE transmitter battery RKE transmitter programming RKE transmitter Aftermarket systems PINPOINT TEST H: THE DOORS DO NOT LOCK/UNLOCK USING THE REMOTE KEYLESS ENTRY (RKE) TRANSMITTER NOTE: All RKE transmitters must be present to begin diagnosis of the RKE system. NOTE: Aftermarket or dealer-installed systems may adversely affect the RKE system These systems should be disconnected before diagnosing any RKE concerns. NOTE: Make sure the RKE transmitters are those provided with the original equipment manufacturer (OEM) system and not from an aftermarket or a dealerinstalled system that may have been installed on the vehicle. H1 H2 H3 CHECK FOR THE CORRECT RKE TRANSMITTERS Check that the correct RKE transmitters are used with the vehicle and all the transmitters are present. Are all the correct RKE transmitters present? CHECK THE OPERATION OF ALL RKE TRANSMITTERS Check the operation of all RKE transmitters. Does the system operate correctly now? CHECK THE POWER DOOR LOCK SYSTEM FOR CORRECT OPERATION Verify the door lock/unlock operation by actuating the driver door lock control switch. Do all the doors lock and unlock correctly? GO to H2. The system cannot be tested without the correct RKE transmitters. INFORM the customer that all the correct RKE transmitters must be present to proceed with diagnosis of the system. The system is operating as designed. INFORM the customer of the correct vehicle behavior. GO to H3. GO to H4. GO to Symptom Chart in this section.
501-14-20 Handles, Locks, Latches and Entry Systems 501-14-20 H4 H5 H6 H7 H8 H9 H10 PINPOINT TEST H: THE DOORS DO NOT LOCK/UNLOCK USING THE REMOTE KEYLESS ENTRY (RKE) TRANSMITTER (Continued) CHECK FOR COMPLETE FUNCTIONALITY OF THE RKE TRANSMITTER(S) Check all the RKE transmitter buttons for correct Does any button operate correctly? MAKE SURE THE RKE TRANSMITTER SIGNAL IS BEING RECEIVED Connect the scan tool. Enter the following diagnostic mode on the scan tool: SJB PIDs. NOTE: The vehicle must be electronically unlocked prior to using any scan tools (using the RKE transmitter or the door lock control switch). Observe the TNSMTR_ID PID while pressing any button on the RKE transmitter. Is the transmitter ID code (TIC) displayed when a button is pressed? CHECK IF THE RKE TRANSMITTERS ARE PROGRAMMED Observe the TNSMTR_ID PID displayed in the previous step. Does the TIC displayed match any of the TICs stored in memory? CHECK THE RKE TRANSMITTER BATTERY Open the RKE transmitter. Do not clean off any grease from the battery terminal on the back surface of the circuit board. Verify the correct battery is being used (CR2032). Remove the RKE transmitter battery and measure the voltage. Is the voltage greater than 2.5 volts? GO to H5. GO to H7. GO to H6. GO to H7. GO to H8. PROGRAM all of the RKE transmitters. REFER to Remote Keyless Entry (RKE) Transmitter Programming in this section. INFORM the customer that any RKE transmitters not present need to be programmed. CLEAR the DTCs. REPEAT the self-test. GO to H9. CHECK IF THE RKE TRANSMITTER IS OUT OF SYNCHRONIZATION WITH THE SJB NOTE: The vehicle must be electronically unlocked using the RKE transmitter or the door lock control switch prior to using any service tools. Enter the following diagnostic mode on the scan tool: Retrieve continuous DTCs. Is continuous DTC B2425 stored in the SJB? INSTALL a new battery. Make sure the battery is seated correctly. DO NOT program the RKE transmitters. Faulty or dead batteries do not erase TICs from memory. TEST the system for normal GO to Pinpoint Test G. GO to H9. CHECK FOR NORMAL OPERATION WITH A KNOWN GOOD RKE TRANSMITTER Enter the following diagnostic mode on the scan tool: SJB PIDs. Using the customer's second RKE transmitter or a known good RKE transmitter that is correct for the vehicle, observe the TNSMTR_ID PID while pressing any button on the RKE transmitter. Does the TIC show up when a button is pressed? CHECK THE SJB FOR CORRECT OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins REPLACE the inoperative RKE transmitter. PROGRAM all RKE transmitter(s). REFER to Remote Keyless Entry (RKE) Transmitter Programming in this section. INFORM the customer that any RKE transmitters not present need to be programmed. TEST the system for normal GO to H10. INSTALL a new SJB. REFER to Section 419-10. PROGRAM all the RKE transmitters. REFER to Remote Keyless Entry (RKE) Transmitter Programming
501-14-21 Handles, Locks, Latches and Entry Systems 501-14-21 PINPOINT TEST H: THE DOORS DO NOT LOCK/UNLOCK USING THE REMOTE KEYLESS ENTRY (RKE) TRANSMITTER (Continued) H10 CHECK THE SJB FOR CORRECT OPERATION (Continued) pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? in this section. INFORM the customer that any RKE transmitters not present need to be programmed. CLEAR the DTCs. REPEAT the self-test. The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. Pinpoint Test I: The Keyless Entry Keypad Illumination Is Inoperative Refer to Wiring Diagrams Cell 117, Remote Keyless Entry and Alarm for schematic and connector information. rmal Operation When any keypad button is pressed the smart junction box (SJB) sends power for the keyless entry keypad illumination on circuit CPK28 (WH/GN) to assist the driver in entering an access code at night. The keyless entry keypad illumination is grounded on circuit GD133 (BK). Circuit CPK28 (GN/BK) (keyless entry keypad) open or short to ground Circuit CPK28 (WH) (SJB) open or short to ground Circuit GD133 (BK) open Keyless entry keypad PINPOINT TEST I: THE KEYLESS ENTRY KEYPAD ILLUMINATION IS INOPERATIVE NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector. I1 I2 CHECK THE SJB KEYPAD SWITCH PIDs Enter the following diagnostic mode on the scan tool: SJB PIDs. Observe the SJB KEY_PAD PID while pressing each keyless entry keypad button. Do the PID values agree with the keypad button positions? CHECK THE KEYLESS ENTRY KEYPAD ILLUMINATION Ignition OFF. Disconnect: SJB C2280a. Connect a fused (5A) jumper wire between the SJB C2880a-18, circuit CPK28 (WH), harness side and the battery positive terminal. GO to I2. GO to Pinpoint Test G. REMOVE the jumper wire. GO to I5. I3 Does the keyless entry keypad illuminate? CHECK CIRCUIT GD133 (BK) FOR AN OPEN Disconnect: Keyless Entry Keypad C500. Measure the resistance between the keyless entry keypad C500-5, circuit GD133 (BK), harness side and ground. REMOVE the jumper wire. GO to I3. GO to I4.