DIAGNOSIS AND TESTING

Transcription

1 Seating DIAGNOSIS AND TESTING Seats Refer to Wiring Diagrams Cell 119 for schematic and connector information. Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information. Refer to Wiring Diagrams Cell 122 for schematic and connector information. Refer to Wiring Diagrams Cell 123, Memory Seats for schematic and connector information. Refer to Wiring Diagrams Cell 149 for component testing. Special Tool(s) Principles of Operation Climate Controlled Seat System Both the driver and front passenger seat has an independent climate controlled seat system installed. A climate controlled seat module mounted to the bottom of the seat cushion electronically controls the climate controlled seat system. The climate controlled seat system receives power from both the battery power and vehicle run circuits. The vehicle must have ignition ON, engine running and the switch set to HEAT or COOL 1, 2, 3, 4 or 5, for the climate controlled seat system to activate. The switch will illuminate to indicate the desired operating mode. Cabin air is drawn through the seat fan motor and 78 Automotive Meter distributed to each of the thermo-electric device 105-R0054 or equivalent (TED) modules located in the seat cushion and backrest. The TEDs then heat or cool the air. The air is then directed into the foam pad B-surface. Channels in the A-surface of the foam pad are used to distribute the air along the surface of the seat. Once the system is activated, the climate controlled Worldwide Diagnostic System seat module uses a set of flexible algorithms to (WDS) control the heating/cooling modes, and the fan 418-FS317 motor speed based on the climate controlled seat New Generation STAR (Scan switch settings. Tool) Tester 418-F052, or equivalent scan The TED uses a Peltier circuit of P-type and tool N-type semiconductors connected in series using copper electrical conductors. The semiconductors Diagnostic Tool, Restraint are sandwiched between two insulating ceramic System (2 Req d) plates. When current is applied to the TED, one side (014-R1076) releases energy as heat, while the opposite side absorbs energy and gets cold. By reversing the current flow, the hot and cold sides reverse. NOTE: When installing a new climate control seat module (CCSM), it is necessary to carry out programmable module installation (PMI). For additional information, refer to Section NOTE: Faults that cause the climate controlled seat to shut OFF after more than 40 seconds are usually mechanical in nature, such as incorrect foam installation, duct blockages or misaligned TED. The climate controlled seat system is able to heat and cool the front seats. Each climate controlled front seat is controlled by a switch located on the center console. The temperature differences between the individual HEAT and COOL settings is minimal. For example, it is difficult to distinguish between LOW COOL and MEDIUM COOL settings. Monitoring the seat temperature at different HEAT or COOL settings should not be done as it is ineffective in confirming climate controlled seat system operation. Copyright 2002, Ford Motor Company Last updated: 10/5/2005

2 Seating DIAGNOSIS AND TESTING Heating Characteristics Cooling Characteristics NOTE: The presence of overtemp faults (DTCs The climate controlled seat system draws B2729 and B2730) can be induced by incorrect approximately 4.5 amps for the first twelve (12) operation of the climate controlled seat system after minutes and will operate at 2 amps thereafter. an initial HEAT setting has been attained. If a In COOL mode, the TED can remove up to 8 C HEAT setting is repeatedly turned OFF and ON in (14 F) from the ambient air temperature entering an attempt to increase the seat temperature, an the system. overtemp condition can result and the DTC(s) will be set. There are five manual settings based on the position of the climate controlled seat switch on The climate controlled seat system draws the center console. Position one is the LOW approximately 7.5 amps until reaching the set setting and position five is the HIGH setting. point, and then the system operates at a reduced amperage to maintain the climate setting. If the temperature at one of the TEDs falls below 18 C (64 F), the climate controlled seat module In HEAT mode, the TED can add up to C will shut down the TEDs. If the temperature ( F) to the ambient air temperature entering continues to drop below 12 C (54 F), the climate the system. controlled seat module will shut down the fan There are five manual settings based on the motor. position of the climate controlled seat switch on In COOL mode, there is a correlation between the the center console. Position one is the LOW seat fan motor speed and the TED supply voltage. setting and position five is the HIGH setting. In the LOW setting, the climate controlled seat Climate module is set to maintain TED temperature at Controlled Thermo- Seat Switch Seat Fan Electric 37 C (99 F). Thumbwheel Motor Supply Device Supply In the HIGH setting, the climate controlled seat Position Voltage Duty Cycle module is set to maintain TED temperature at 1 7 volts 0% 65 C (149 F). 2 7 volts 49% If the temperature at one of the TEDs rises above 3 7 volts 77% 90 C (194 F) in the HEAT mode or 70 C (149 F) volts 100% in the COOL mode for more than four seconds, the CCSM will record an overtemp DTC, remove 5 8 volts 100% power from the TEDs and go into Blower Only mode in an attempt to cool down the The climate controlled seat system is deactivated by TEDs. If the TEDs temperature has not dropped one of the following actions: to 85 C (185 F) in the HEAT mode or 65 C (140 F) in the COOL mode after 30 seconds, the Depressing the momentary HEAT or COOL CCSM will shut down and remain off until the switch on the center the center console. ignition is cycled. Also if the CCSM detects an Turning the vehicle off. overtemp twice during the same ignition cycle, it will also shut down. Inspection and Verification In HEAT mode, there is no linear correlation 1. Verify the customer concern by operating the between the seat fan motor speed and the TED power seat, memory seat or climate controlled supply voltage. The CCSM will independently seat functions. vary the fan speed and the TED supply voltage in 2. Visually inspect for obvious signs of order to reach and maintain the temperature mechanical and electrical damage. determined by the switch setting.

3 Seating DIAGNOSIS AND TESTING Visual Inspection Chart 6. If the scan tool still does not communicate with Mechanical Electrical the vehicle, refer to the scan tool manual. Seat track Fuse(s) 7. Carry out the DATA LINK DIAGNOSTICS Climate controlled seat Circuitry test. If the scan tool responds with: ducts Driver seat module (DSM) CKT914, CKT915, or CKT70=ALL ECUS Lumbar control switch NO RESP/NOT EQUIP, refer to Section Memory set switch Power seat motor NO RESPONSE/NOT EQUIPPED for driver Seat control switch Seat fan motor DSM, refer to Section Climate controlled seat NO RESPONSE/NOT EQUIPPED for module climate controlled seat module. GO to Climate controlled seat switch Symptom Chart SYSTEM PASSED for the DSM, retrieve and record the continuous diagnostic trouble 3. If an obvious cause for an observed or reported codes (DTCs), clear the continuous DTCs concern is found, correct the cause (if possible) and carry out self-test diagnostics for the before proceeding to the next step. DSM. 4. If the concern is with the power seat SYSTEM PASSED for the climate (non-memory seat) or the power lumbar and the controlled seat module, retrieve and record cause is not visually evident, verify the the continuous diagnostic trouble codes symptom and GO to Symptom Chart. (DTCs), clear the continuous DTCs and 5. If the concern is with the memory seat or carry out self-test diagnostics for the climate climate controlled seat and the cause is not controlled seat module. visually evident, connect the scan tool to the 8. If the DTCs retrieved are related to the concern, data link connector (DLC) and select the go to DSM Diagnostic Trouble Code (DTC) vehicle to be tested from the scan tool menu. If Index or the Climate Controlled Seat Module the scan tool does not communicate with the (CCSM) Diagnostic Trouble Code (DTC) Index. vehicle: 9. If no DTCs related to the concern are retrieved, check that the program card is correctly GO to Symptom Chart. installed. check the connections to the vehicle. DSM Diagnostic Trouble Code (DTC) Index check the ignition switch position. DSM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1342 ECU Is Faulted DSM INSTALL a new DSM. REFER to Section B1530 Memory Set Switch Circuit DSM GO to Pinpoint Test J. Short to Ground B1534 Memory 1 Switch Circuit DSM GO to Pinpoint Test J. Short to Ground B1538 Memory 2 Switch Circuit DSM GO to Pinpoint Test J. Short to Ground

4 Seating DIAGNOSIS AND TESTING DSM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1663 Seat Driver Front Up/Down DSM If the motor does not Motor Stalled operate, GO to Pinpoint Test H (Navigator) or GO to Pinpoint Test I (Expedition). If motor operates, GO to Pinpoint Test J. B1664 Seat Driver Rear Up/Down DSM If the motor does not Motor Stalled operate, GO to Pinpoint Test H (Navigator) or GO to Pinpoint Test I (Expedition). If motor operates, GO to Pinpoint Test J. B1665 Seat Driver DSM If the motor does not Forward/Backward Motor operate, GO to Pinpoint Stalled Test H (Navigator) or GO to Pinpoint Test I (Expedition). If motor operates, GO to Pinpoint Test J. B1666 Seat Recline DSM If the motor does not Forward/Rearward Motor operate, GO to Pinpoint Stalled Test H (Navigator). If motor operates, GO to Pinpoint Test J. B1667 Mirror Driver Up/Down DSM REFER to Section Motor Stalled B1668 Mirror Driver Right/Left DSM REFER to Section Motor Stalled B1669 Mirror Passenger Up/Down DSM REFER to Section Motor Stalled B1670 Mirror Passenger DSM REFER to Section Right/Left Motor Stalled B1676 Battery Voltage Out of DSM REFER to Section Range B1703 Seat Driver Recline DSM GO to Pinpoint Test H Forward Switch Circuit (Navigator). Short to Battery B1707 Seat Driver Recline DSM GO to Pinpoint Test H Rearward Switch Circuit (Navigator). Short to Battery B1711 Seat Driver Front Up DSM GO to Pinpoint Test H Switch Circuit Short to (Navigator) or GO to Battery Pinpoint Test I (Expedition). B1715 Seat Driver Front Down DSM GO to Pinpoint Test H Switch Circuit Short to (Navigator) or GO to Battery Pinpoint Test I (Expedition).

5 Seating DIAGNOSIS AND TESTING DSM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1719 Seat Driver Forward DSM GO to Pinpoint Test H Switch Circuit Short to (Navigator) or GO to Battery Pinpoint Test I (Expedition). B1723 Seat Driver Rearward DSM GO to Pinpoint Test H Switch Circuit Short to (Navigator) or GO to Battery Pinpoint Test I (Expedition). B1727 Seat Driver Rear Up DSM GO to Pinpoint Test H Switch Circuit Short to (Navigator) or GO to Battery Pinpoint Test I (Expedition). B1731 Seat Driver Rear Down DSM GO to Pinpoint Test H Switch Circuit Short to (Navigator) or GO to Battery Pinpoint Test I (Expedition). B1735 Mirror Driver Vertical DSM REFER to Section Switch Circuit Short to Battery B1739 Mirror Driver Horizontal DSM REFER to Section Switch Circuit Short to Battery B1743 Mirror Passenger Vertical DSM REFER to Section Switch Circuit Short to Battery B1747 Mirror Passenger DSM REFER to Section Horizontal Switch Circuit Short to Battery B1950 Seat Rear Up/Down DSM GO to Pinpoint Test J. Feedback Potentiometer Circuit Failure B1952 Seat Rear Up/Down DSM GO to Pinpoint Test J. Feedback Potentiometer Circuit Short to Battery B1954 Seat Front Up/Down DSM GO to Pinpoint Test J. Feedback Potentiometer Circuit Failure B1956 Seat Front Up/Down DSM GO to Pinpoint Test J. Feedback Potentiometer Circuit Short to Battery B1958 Seat Recline DSM GO to Pinpoint Test J. Fwd/Backward Feedback Potentiometer Circuit Failure B1961 Seat Recline DSM GO to Pinpoint Test J. Fwd/Backward Feedback Potentiometer Circuit Short to Ground

6 Seating DIAGNOSIS AND TESTING DSM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1962 Seat Horizontal DSM GO to Pinpoint Test J. Forward/Rearward Feedback Potentiometer Circuit Failure B1964 Seat Horizontal DSM GO to Pinpoint Test J. Forward/Rearward Feedback Potentiometer Circuit Short to Battery B1987 Pedal Forward / Rearward DSM REFER to Section Motor Stalled B1988 Pedal Position Forward DSM REFER to Section Switch Circuit Short to Battery B1989 Pedal Position Rearward DSM REFER to Section Switch Circuit Short to Battery B1990 Pedal Forward/Rearward DSM REFER to Section Feedback Potentiometer Circuit Failure B1991 Pedal Forward/Rearward DSM REFER to Section Feedback Potentiometer Circuit Short to Battery B2312 Mirror Passenger DSM REFER to Section Horizontal Feedback Potentiometer Circuit Failure B2314 Mirror Passenger DSM REFER to Section Horizontal Feedback Potentiometer Short to Battery B2316 Mirror Passenger Vertical DSM REFER to Section Feedback Potentiometer Circuit Failure B2318 Mirror Passenger Vertical DSM REFER to Section Feedback Potentiometer Short to Battery B2320 Mirror Driver Horizontal DSM REFER to Section Feedback Potentiometer Circuit Failure B2322 Mirror Driver Horizontal DSM REFER to Section Feedback Potentiometer Short to Battery B2324 Mirror Driver Vertical DSM REFER to Section Feedback Potentiometer Circuit Failure B2326 Mirror Driver Vertical DSM REFER to Section Feedback Potentiometer Short to Battery B2477 Module Configuration DSM INSTALL a new DSM. Failure

7 Seating DIAGNOSIS AND TESTING Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Index Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1342 ECU Is Faulted CCSM INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module. B1358 Ignition Switch or Blower Electronics CCSM GO to Pinpoint Test R. Circuit Short to Ground B2477 Module Configuration Error CCSM This DTC indicates programmable module installation (PMI) has not been done to a newly installed module. CARRY OUT PMI. REFER to Section CLEAR the DTC. CARRY OUT the self-test. B2486 Climate Controlled Seat Module Voltage CCSM DEPOWER the supplemental restraint Out of Range system (SRS). REFER to Section B. DISCONNECT driver safety belt buckle pretensioner C3201 or passenger safety belt buckle pretensioner C3202 of the affected seat and CONNECT restraint system diagnostic tool to the safety belt buckle pretensioner harness connector. CONNECT the battery ground cable. CHECK circuit 294 (WH/LB) for a fault. REPAIR as needed. If okay, REFER to Section Once the repair is complete, DISCONNECT the restraint system diagnostic tool from the safety belt buckle pretensioner harness connector and CONNECT the safety belt buckle pretensioner connector of the affected seat. REPOWER the SRS. B2488 Thumb-Wheel Switch Voltage Out of CCSM GO to Pinpoint Test S. Range High B2521 Tach Circuit Failure CCSM GO to Pinpoint Test R. B2729 Cushion Overtemp Detected CCSM GO to Pinpoint Test T. B2730 Back Overtemp Detected CCSM GO to Pinpoint Test T. B2731 Differential Temperature Fault CCSM GO to Pinpoint Test T.

8 Seating DIAGNOSIS AND TESTING Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Index DTC Description Source Action B2792 Heat Switch Short to Ground CCSM NOTE: If HEAT is pressed for greater than 20 seconds on the climate controlled seat switch, DTC B2792 will set in the CCSM. CLEAR the DTC. If the DTC does not clear, DEPOWER the supplemental restraint system (SRS). REFER tosection B. DISCONNECT driver safety belt buckle pretensioner C3201 or passenger safety belt buckle pretensioner C3202 of the affected seat and CONNECT restraint system diagnostic tool to the safety belt buckle pretensioner harness connector. CONNECT the battery ground cable. CHECK circuit 1551 (VT/WH) for a short to ground. REPAIR as needed. If okay, INSTALL a new climate controlled seat switch. Once the repair is complete, diagnostic tool from the safety belt buckle pretensioner harness connector and CONNECT the safety belt buckle pretensioner connector of the affected seat. REPOWER the SRS. REFER to Section B.

9 Seating DIAGNOSIS AND TESTING Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Index DTC Description Source Action B2793 Cool Switch Short to Ground CCSM U2362 UBP Invalid Data de ID CCSM NOTE: If COOL is pressed for greater than 20 seconds on the climate controlled seat switch, DTC B2793 will set in the CCSM. CLEAR the DTC. If the DTC does not clear, DEPOWER the supplemental restraint system (SRS). REFER tosection B. DISCONNECT driver safety belt buckle pretensioner C3201 or passenger safety belt buckle pretensioner C3202 of the affected seat and CONNECT restraint system diagnostic tool to the safety belt buckle pretensioner harness connector. CONNECT the battery ground cable. CHECK circuit 1550 (WH/OG) for a short to ground. REPAIR as needed. If okay, INSTALL a new climate controlled seat switch. Once the repair is complete, diagnostic tool from the safety belt buckle pretensioner harness connector and CONNECT the safety belt buckle pretensioner connector of the affected seat. REPOWER the SRS. REFER to Section B. NOTE: DTC U2362 indicates a network concern, the CCSM is not the source of the fault. CONFIGURE the CCSM. CLEAR the DTC. If the DTC does not clear, CONFIGURE the CCSM once again. CLEAR the DTC. If the DTC does not clear, REFER Section Symptom Chart Symptom Chart Condition Possible Sources Action The power seat is inoperative PDJB Fuse 109 (30A) GO to Pinpoint Test A. Expedition (driver). PDJB Fuse 108 (30A) (passenger). Seat control switch (14A701). Circuitry. The power seat is inoperative PDJB Fuse 108 (30A) GO to Pinpoint Test B. Navigator Passenger (passenger). Seat control switch (14A701). Circuitry. The power seat moves but is Seat tracks. GO to Pinpoint Test C. noisy Fwd/Rwd drive cables. Power seat motors.

10 Seating DIAGNOSIS AND TESTING Symptom Chart Condition Possible Sources Action The power seat moves but is Fastening hardware. GO to Pinpoint Test D. loose Seat tracks. Power seat motors. The power seat does not Track obstruction. GO to Pinpoint Test E. make full travel Seat tracks. Fwd/Rwd drive cables. Power seat motors. The power seat does not Seat tracks. GO to Pinpoint Test F. move horizontally/vertically Circuitry. Expedition Seat control switch. Power seat motors. Fwd/Rwd drive cables. The power seat does not Seat tracks. GO to Pinpoint Test G move Circuitry. horizontally/vertically/recline Seat control switch. Navigator Passenger Power seat motors. Fwd/Rwd drive cables. The memory seat is Circuitry. GO to Pinpoint Test H inoperative Seat control switch. (Navigator) or GO to Pinpoint Seat track. Test I (Expedition). DSM. PDJB Fuse 109 (30A). Power seat motor. The memory seat does not Memory set switch. GO to Pinpoint Test J. operate correctly does not DSM. operate using the memory set Circuitry. switch The memory seat does not Circuitry. REFER to the DTC Index. operate correctly does not DSM. operate using the remote Keyless entry transmitter. transmitter RAP module. communication with the Circuitry. REFER to Section module DSM DSM. Fuse(s). communication with the DSM. REFER to Section module unable to carry out Circuitry. on-demand self-test with the Fuse(s). DSM The power lumbar is Circuitry. GO to Pinpoint Test K inoperative Lumbar control switch. (driver) or GO to Pinpoint Power lumbar assembly. Test L (passenger). Power lumbar motor. The third row power fold seat Fuse(s). GO to Pinpoint Test M. is inoperative Left and Circuitry. Right Body Security Module (BSM). The third row power fold seat Fuse(s). For vehicles built up to is inoperative/does not Circuitry. 02/2003, GO to Pinpoint Test operate correctly Left Seat control switch(es). N. For vehicles built 02/2003 Power seat motor. onward, GO to Pinpoint Test Power seat relay. P. Power seat motor drive cable.

11 Seating DIAGNOSIS AND TESTING Symptom Chart Condition Possible Sources Action The third row power fold seat Fuse(s). For vehicles built up to is inoperative/does not Circuitry. 02/2003,GO to Pinpoint Test operate correctly Right Seat control switch(es). O. For vehicles built 02/2003 Power seat motor. onward, GO to Pinpoint Test Power seat relay. Q. Power seat motor drive cable. All climate controlled seats CJB Fuse F1.118 (30A). DEPOWER the supplemental are inoperative Circuitry. restraint system (SRS). REFER tosection B. DISCONNECT driver safety belt buckle pretensioner C3201 or passenger safety belt buckle pretensioner C3202 of the affected seat and CONNECT restraint system diagnostic tool to the safety belt buckle pretensioner harness connector. CONNECT the battery ground cable. CHECK driver CCSM C3031b-4 (or passenger CCSM C3036b-4), circuit 1153 (RD/BK) for battery voltage. REPAIR as needed. If okay, REPAIR ground to driver CCSM C3036b-3 (or passenger CCSM C3036b-3 and C3036a-9), circuit 57 (BK). Once the repair is complete, DISCONNECT the restraint system diagnostic tool from the safety belt buckle pretensioner harness connector and CONNECT the safety belt buckle pretensioner connector of the affected seat. REPOWER the SRS. REFER to Section B. A single climate controlled Wiring, terminals, or GO to Pinpoint Test U. seat does not operate/does not connectors. operate correctly Climate controlled seat switch. CCSM.

12 Seating DIAGNOSIS AND TESTING Symptom Chart Condition Possible Sources Action The passenger climate Wiring, terminals, or DEPOWER the supplemental controlled seat does not connectors. restraint system (SRS). operate, the driver climate CCSM. REFER tosection B. controlled seat does operate DISCONNECT passenger safety belt buckle pretensioner C3202 and CONNECT restraint system diagnostic tool to the passenger safety belt buckle pretensioner C3202. CONNECT the battery ground cable. CHECK passenger CCSM C3036a-9, circuit 57 (BK) for ground. REPAIR as needed. If okay, GO to Pinpoint Test U. Once the repair is complete, DISCONNECT the restraint system diagnostic tool from the safety belt buckle pretensioner harness connector and CONNECT the safety belt buckle pretensioner connector of the affected seat. REPOWER the SRS. REFER to Section B. A single climate controlled Wiring, terminals, or GO to Pinpoint Test V. seat does not operate connectors. correctly one or more Climate controlled seat climate controlled seat switch switch. LEDs are inoperative CCSM. Easy exit/easy entry is Ignition switch. GO to Pinpoint Test W. inoperative/not operating ICM. correctly DSM. Circuitry.

13 Seating DIAGNOSIS AND TESTING Symptom Chart Condition Possible Sources Action communication with the Wiring, terminals, or DEPOWER the supplemental CCSM connectors restraint system (SRS). CCSM REFER tosection B. DISCONNECT driver safety belt buckle pretensioner C3201 or passenger safety belt buckle pretensioner C3202 of the affected seat and CONNECT restraint system diagnostic tool to the safety belt buckle pretensioner harness connector. CONNECT the battery ground cable. CHECK driver CCSM C3031b-2 (or passenger CCSM C3036b-2), circuit 294 (WH/LB) for ignition voltage and driver CCSM C3031b-3 (or passenger CCSM C3036b-3 and C3031a-9), circuit 57 (BK) for ground. REPAIR as needed. If okay, REFER to Section Once the repair is complete, DISCONNECT the restraint system diagnostic tool from the safety belt buckle pretensioner harness connector and CONNECT the safety belt buckle pretensioner connector of the affected seat. REPOWER the SRS. REFER to Section B. Pinpoint Tests CAUTION: Electronic modules are sensitive to electrostatic discharge. If exposed to these charges, damage may result. PINPOINT TEST A: THE POWER SEAT IS INOPERATIVE EXPEDITION A1 CHECK THE VOLTAGE TO THE SEAT SWITCH CIRCUIT 566 (DG) OR (PASSENGER 1462 ) WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the supplemental restraint system (SRS) must be depowered. Refer to Section B. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

14 Seating DIAGNOSIS AND TESTING PINPOINT TEST A: THE POWER SEAT IS INOPERATIVE EXPEDITION A1 CHECK THE VOLTAGE TO THE SEAT SWITCH CIRCUIT 566 (DG) OR (PASSENGER 1462 ) Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section B. Disconnect the affected C3201 (driver) or C3202 (passenger). Connect restraint system diagnostic tool to the affected C3201 (driver) or C3202 (passenger). WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Disconnect: Seat Control Switch (C352 Driver) or (C355 Passenger). Measure the voltage between driver seat control switch C352-7, circuit 566 (DG) (or passenger seat control switch C355-7, circuit 1462 ), harness side and ground. A2 GO to A2. REPAIR driver circuit 566 (DG) (or passenger circuit 1462 ). TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver C3201 or passenger seat safety belt buckle pretensioner C3202. CONNECT driver C3201 or passenger seat safety belt buckle pretensioner C3202. REPOWER the supplemental restraint system (SRS). Is the voltage greater than 10 volts? CHECK CIRCUIT 57 (BK) FOR OPEN Measure the resistance between driver seat control switch C352-1, circuit 57 (BK) (or passenger seat control switch C355-1, circuit 57 ), harness side and ground. INSTALL a new seat control switch. REFER to Seat Control Switch 6-Way in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver C3201 or passenger seat safety belt buckle pretensioner C3202. CONNECT driver C3201 or passenger seat safety belt buckle pretensioner C3202. REPOWER the supplemental restraint system (SRS). REPAIR circuit 57 (BK). TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver Is the resistance less than 5 ohms? C3201 or passenger seat safety belt buckle pretensioner C3202. CONNECT driver C3201 or passenger seat safety belt buckle pretensioner C3202. REPOWER the supplemental restraint system (SRS).

15 Seating DIAGNOSIS AND TESTING B1 PINPOINT TEST B: THE POWER SEAT IS INOPERATIVE NAVIGATOR PASSENGER CHECK THE VOLTAGE TO THE SEAT SWITCH WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the supplemental restraint system (SRS) must be depowered. Refer to Section B. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section B. Disconnect the passenger C3202. Connect restraint system diagnostic tool to the passenger C3202. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Disconnect: Seat Control Switch C3026. Measure the voltage between seat control switch C3026-A, circuit 1462 (RD/WH), harness side and ground. B2 GO to B2. REPAIR circuit 1462 (RD/WH). TEST the system for normal operation. diagnostic tool from passenger seat safety belt buckle pretensioner C3202. CONNECT passenger seat safety belt buckle pretensioner C3202. REPOWER the supplemental restraint system (SRS). Is the voltage greater than 10 volts? CHECK GROUND CIRCUIT FOR OPEN Measure the resistance between seat control switch C3026-D, circuit 57 (BK), harness side and ground. INSTALL a new seat control switch. REFER to Seat Control Switch 8-Way in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat safety belt buckle pretensioner C3202. CONNECT passenger seat safety belt buckle pretensioner C3202. REPOWER the supplemental restraint system (SRS). REPAIR circuit 57 (BK). TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat safety belt buckle Is the resistance less than 5 ohms? pretensioner C3202. CONNECT passenger seat safety belt buckle pretensioner C3202. REPOWER the supplemental restraint system (SRS).

16 Seating DIAGNOSIS AND TESTING C1 PINPOINT TEST C: THE POWER SEAT MOVES BUT IS NOISY CHECK THE TRACK ALIGNMENT WARNING: The restraint system diagnostic tool is for ALIGN the track to the seat and the floor. restraint system service only. Remove from vehicle prior to TEST the system for normal operation. road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the supplemental restraint system (SRS) must be depowered. Refer to Section B. C3202. CONNECT driver seat safety belt NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Depower the SRS. Refer to Supplemental Restraint System C3202. REPOWER the supplemental (SRS) Depowering and Repowering in the General Procedures restraint system (SRS). REFER to portion of Section B. Section B. Disconnect the affected C3201 (driver) or C3202 (passenger). INSTALL a new seat track part. REFER to Connect restraint system diagnostic tool to the affected Seat Track Power or Front Seat Track C3201 (driver) or C3202 Motor in this section. TEST the system for (passenger). normal operation. DISCONNECT the battery ground cable. DISCONNECT the WARNING: Be sure that nobody is in the vehicle and restraint system diagnostic tool from driver that there is nothing blocking or set in front of any air bag C3201 module when the battery ground cable is connected. or passenger seat safety belt buckle Connect the battery ground cable. pretensioner C3202. CONNECT driver Check the alignment of the track to the floor and the track to the C3201 seat. or passenger seat safety belt buckle Is the track out of alignment? pretensioner C3202. REPOWER the supplemental restraint system (SRS). D1 PINPOINT TEST D: THE POWER SEAT MOVES BUT IS LOOSE CHECK THE FASTENING HARDWARE WARNING: The restraint system diagnostic tool is for TIGHTEN all fastening hardware to restraint system service only. Remove from vehicle prior to specifications. TEST the system for normal road use. Failure to remove could result in injury and possible operation. DISCONNECT the battery violation of vehicle safety standards. ground cable. DISCONNECT the restraint NOTE: If a seat equipped with a seat mounted side air bag and/or system diagnostic tool from driver seat a safety belt pretensioner (if equipped) system is being serviced, safety belt buckle pretensioner C3201 or the supplemental restraint system (SRS) must be depowered. passenger seat safety belt buckle Refer to Section B. pretensioner C3202. CONNECT driver NOTE: The SRS must be fully operational and free of faults before C3201 releasing the vehicle to the customer. or passenger seat safety belt buckle Depower the SRS. Refer to Supplemental Restraint System pretensioner C3202. REPOWER the (SRS) Depowering and Repowering in the General Procedures supplemental restraint system (SRS). portion of Section B. Disconnect the affected C3201 (driver) or C3202 (passenger). IDENTIFY the cause and INSTALL a new Connect restraint system diagnostic tool to the affected seat track component. REFER to Seat C3201 (driver) or C3202 Track Power or Front Seat Track Motor (passenger). in this section. TEST the system for normal operation. DISCONNECT the WARNING: Be sure that nobody is in the vehicle and battery ground cable. DISCONNECT the that there is nothing blocking or set in front of any air bag restraint system diagnostic tool from driver module when the battery ground cable is connected. C3201 Connect the battery ground cable. or passenger seat safety belt buckle Is the fastening hardware loose? pretensioner C3202. CONNECT driver C3201 or passenger seat safety belt buckle pretensioner C3202. REPOWER the supplemental restraint system (SRS).

17 Seating DIAGNOSIS AND TESTING E1 PINPOINT TEST E: THE POWER SEAT DOES NOT MAKE FULL TRAVEL CHECK FOR OBSTRUCTION IN THE SEAT TRACK WARNING: The restraint system diagnostic tool is for REMOVE the obstruction(s) and GREASE restraint system service only. Remove from vehicle prior to the track(s). TEST the system for normal road use. Failure to remove could result in injury and possible operation. DISCONNECT the battery violation of vehicle safety standards. ground cable. DISCONNECT the restraint NOTE: If a seat equipped with a seat mounted side air bag and/or system diagnostic tool from driver seat a safety belt pretensioner (if equipped) system is being serviced, safety belt buckle pretensioner C3201 or the supplemental restraint system (SRS) must be depowered. passenger seat safety belt buckle Refer to Section B. pretensioner C3202. CONNECT driver NOTE: The SRS must be fully operational and free of faults before C3201 releasing the vehicle to the customer. or passenger seat safety belt buckle Depower the SRS. Refer to Supplemental Restraint System pretensioner C3202. REPOWER the (SRS) Depowering and Repowering in the General Procedures supplemental restraint system (SRS). portion of Section B. Disconnect the affected C3201 (driver) or C3202 (passenger). IDENTIFY the cause and INSTALL a new Connect restraint system diagnostic tool to the affected seat track component. REFER to Seat C3201 (driver) or C3202 Track Power or Front Seat Track Motor (passenger). in this section. TEST the system for normal operation. DISCONNECT the WARNING: Be sure that nobody is in the vehicle and battery ground cable. DISCONNECT the that there is nothing blocking or set in front of any air bag restraint system diagnostic tool from driver module when the battery ground cable is connected. C3201 Connect the battery ground cable. or passenger seat safety belt buckle Remove the seat. For additional information, refer to Front Seat pretensioner C3202. CONNECT driver 40 Percent in this section. Are there any obstructions in the track? C3201 or passenger seat safety belt buckle pretensioner C3202. REPOWER the supplemental restraint system (SRS). PINPOINT TEST F: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY EXPEDITION F1 DETERMINE WHICH POWER SEAT HAS FAILED F2 F3 WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the supplemental restraint system (SRS) must be depowered. Refer to Section B. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. GO to F13. Operate the driver seat in all directions. Does the driver power seat operate correctly? GO to F2. DETERMINE WHICH DIRECTION HAS FAILED Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section B. Disconnect the driver C3201. Connect restraint system diagnostic tool to the driver C3201. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. GO to F6. Operate the power seat forward and rearward. Will the track move horizontally? GO to F3. CHECK THE VOLTAGE TO FORWARD/REVERSE SEAT MOTOR Disconnect: Power Seat Motor C362.

18 Seating DIAGNOSIS AND TESTING PINPOINT TEST F: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY EXPEDITION F3 CHECK THE VOLTAGE TO FORWARD/REVERSE SEAT MOTOR Measure the voltage between power seat motor assembly C362-1, circuit 980 (YE/WH), harness side and C362-2, circuit 981 (RD/WH), harness side while pushing the forward/reverse switch forward and backward. F4 INSTALL a new forward/reverse power seat motor. REFER to Front Seat Track Motor in this section. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver C3201. CONNECT driver seat safety belt buckle pretensioner C3201. REPOWER Is the voltage greater than -10 volts when the the supplemental restraint system (SRS). forward/reverse switch is pressed forward, greater than +10 volts with the forward reverse switch is pressed backward and 0 volts when the switch is in the rest position? GO to F4. CHECK CIRCUIT 980 (YE/WH) FOR AN OPEN AND A SHORT TO GROUND Disconnect: Seat Control Switch C352. Measure the resistance between seat control switch C352-5, circuit 980 (YE/WH), harness side and power seat motor C362-1, circuit 980 (YE/WH), harness side; and between seat control switch C352-5, circuit 980 (YE/WH), harness side and ground. GO to F5. REPAIR circuit 980 (YE/WH). TEST the system for normal operation. driver Is the resistance less than 5 ohms between the power seat motor and the seat control switch, and greater than 10,000 ohms between the seat control switch and ground? B.

19 Seating DIAGNOSIS AND TESTING PINPOINT TEST F: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY EXPEDITION F5 F6 F7 CHECK CIRCUIT 981 (RD/WH) FOR AN OPEN AND A SHORT TO GROUND Measure the resistance between seat control switch C352-3, circuit 981 (RD/WH), harness side and power seat motor C362-2, circuit 981 (RD/WH), harness side; and between seat control switch C352-3, circuit 981 (RD/WH), harness side and INSTALL a new seat control switch. ground. REFER to Seat Control Switch 6-Way in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver C3201. CONNECT driver seat safety belt buckle pretensioner C3201. REPOWER the supplemental restraint system (SRS). REPAIR circuit 981 (RD/WH). TEST the system for normal operation. driver Is the resistance less than 5 ohms between the power seat motor and the seat control switch, and greater than 10,000 ohms between the seat control switch and ground? B. DETERMINE SEAT TILTING FAILURE Determine seat tilting failure. Can the seat be tilted forward or backward? If only the forward tilting operates, GO to F7. If only the rear tilting operates, GO to F10. INSTALL a new seat control switch. REFER to Seat Control Switch 6-Way in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver C3201. CONNECT driver seat safety belt buckle pretensioner C3201. REPOWER the supplemental restraint system (SRS). CHECK THE VOLTAGE TO THE REAR HEIGHT MOTOR Disconnect: Power Seat Motor C363.

20 Seating DIAGNOSIS AND TESTING PINPOINT TEST F: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY EXPEDITION F7 CHECK THE VOLTAGE TO THE REAR HEIGHT MOTOR Measure the voltage between power seat motor C363-2, circuit 983 (RD/LG), harness side and C363-1, circuit 982 (YE/LG), harness side while depressing the rear tilt switch up and down. F8 INSTALL a new rear height power seat motor. REFER to Front Seat Track Motor in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver C3201. CONNECT driver seat safety belt buckle pretensioner C3201. REPOWER Is the voltage greater than +10 volts when the rear tilt the supplemental restraint system (SRS). switch is pressed up, greater than -10 volts when the rear tilt switch is pressed down and 0 volts when the switch is in the rest position? GO to F8. CHECK CIRCUIT 983 (RD/LG) FOR AN OPEN AND A SHORT TO GROUND Disconnect: Seat Control Switch C352. Measure the resistance between seat control switch C352-4, circuit 983 (RD/LG), harness side and power seat motor C363-2, circuit 983 (RD/LG), harness side; and between seat control switch C352-4, circuit 983 (RD/LG), harness side and ground. GO to F9. REPAIR circuit 983 (RD/LG). TEST the system for normal operation. driver Is the resistance less than 5 ohms between the power seat motor and the seat control switch, and greater than 10,000 ohms between the seat control switch and ground? B.

21 Seating DIAGNOSIS AND TESTING PINPOINT TEST F: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY EXPEDITION F9 F10 CHECK CIRCUIT 982 (YE/LG) FOR AN OPEN AND A SHORT TO GROUND Measure the resistance between seat control switch C352-6, circuit 982 (YE/LG), harness side and power seat motor assembly C363-1, circuit 982 (YE/LG), harness side; and between seat control switch C352-6, circuit 982 (YE/LG), INSTALL a new seat control switch. harness side and ground. REFER to Seat Control Switch 6-Way in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver C3201. CONNECT driver seat safety belt buckle pretensioner C3201. REPOWER the supplemental restraint system (SRS). REPAIR circuit 982 (YE/LG). TEST the system for normal operation. driver Is the resistance less than 5 ohms between the power seat motor and the seat control switch, and greater than 10,000 ohms between the seat control switch and ground? B. CHECK THE VOLTAGE TO FRONT HEIGHT MOTOR Disconnect: Power Seat Motor C382. Measure the voltage between power seat motor C382-2, circuit 979 (RD/LB), harness side and C382-1, circuit 978 (YE/LB), harness side while pushing the rear tilting switch up and down. F11 INSTALL a new front height power seat motor. REFER to Front Seat Track Motor in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver C3201. CONNECT driver seat safety belt buckle pretensioner C3201. REPOWER Is the voltage greater than +10 volts when the front tilt the supplemental restraint system (SRS). switch is pressed up, greater than -10 volts when the front tilt switch is pressed down and 0 volts when the switch is in the rest position? GO to F11. CHECK CIRCUIT 979 (RD/LB) FOR AN OPEN AND A SHORT TO GROUND Disconnect: Seat Control Switch C352.

22 Seating DIAGNOSIS AND TESTING PINPOINT TEST F: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY EXPEDITION F11 CHECK CIRCUIT 979 (RD/LB) FOR AN OPEN AND A SHORT TO GROUND Measure the resistance between seat control switch C352-8, circuit 979 (RD/LB), harness side and power seat motor C382-2, circuit 979 (RD/LB), harness side; and between seat control switch C352-8, circuit 979 (RD/LB), harness side and ground. F12 F13 GO to F12. REPAIR circuit 979 (RD/LB). TEST the system for normal operation. driver Is the resistance less than 5 ohms between the power seat motor and the seat control switch, and greater than 10,000 ohms between the seat control switch and ground? B. CHECK CIRCUIT 978 (YE/LB) FOR AN OPEN Measure the resistance between seat control switch C352-2, circuit 978 (YE/LB), harness side and power seat motor C382-1, circuit 978 (YE/LB), harness side; and between seat control INSTALL a new seat control switch. switch C352-2, circuit 978 (YE/LB), harness side and ground. REFER to Seat Control Switch 6-Way in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver C3201. CONNECT driver seat safety belt buckle pretensioner C3201. REPOWER the supplemental restraint system (SRS). REPAIR circuit 978 (YE/LB). TEST the system for normal operation. driver Is the resistance less than 5 ohms between the power seat motor and the seat control switch, and greater than 10,000 ohms between the seat control switch and ground? B. DETERMINE WHICH DIRECTION HAS FAILED PASSENGER SEAT Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section B. Disconnect the passenger C3202. Connect restraint system diagnostic tool to the passenger C3202. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. GO to F17. Operate the power seat forward and rearward. Will the track move horizontally? GO to F14.

23 Seating DIAGNOSIS AND TESTING PINPOINT TEST F: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY EXPEDITION F14 CHECK THE VOLTAGE TO FORWARD REVERSE SEAT MOTOR PASSENGER SEAT Disconnect: Power Seat Motor C332. Measure the voltage between power seat motor C332-1, circuit 986 (YE/WH), harness side and C332-2, circuit 987 (RD/WH), harness side while pushing the forward/reverse switch forward and backward. F15 INSTALL a new forward/reverse power seat motor assembly. REFER to Front Seat Track Motor in this section. TEST the system for normal operation. diagnostic tool from passenger seat safety belt buckle pretensioner C3202. CONNECT passenger seat safety belt buckle pretensioner C3202. REPOWER Is the voltage greater than -10 volts when the the supplemental restraint system (SRS). forward/reverse switch is pressed forward, greater than +10 volts when the forward/reverse switch is pressed backward and 0 volts when the switch is in the rest position? GO to F15. CHECK CIRCUIT 986 (YE/WH) FOR AN OPEN AND A SHORT TO GROUND Disconnect: Seat Control Switch C355. Measure the resistance between seat control switch C355-3, circuit 986 (YE/WH), harness side and power seat motor C332-1, circuit 986 (YE/WH), harness side; and between seat control switch C355-3, circuit 986 (YE/WH), harness side and ground. GO to F16. REPAIR circuit 986 (YE/WH). TEST the system for normal operation. diagnostic tool from passenger seat safety belt buckle pretensioner C3202. CONNECT passenger seat safety belt Is the resistance less than 5 ohms between the power seat buckle pretensioner C3202. REPOWER motor and the seat control switch, and greater than 10,000 the supplemental restraint system (SRS). ohms between the seat control switch and ground?

24 Seating DIAGNOSIS AND TESTING PINPOINT TEST F: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY EXPEDITION F16 CHECK CIRCUIT 987 (RD/WH) FOR AN OPEN AND A SHORT TO GROUND Measure the resistance between seat control switch C355-5, circuit 987 (RD/WH), harness side and power seat motor C332-2, circuit 987 (RD/WH), harness side; and between seat INSTALL a new seat control switch. control switch C355-5, circuit 987 (RD/WH), harness side and REFER to Seat Control Switch 6-Way ground. in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat safety belt buckle pretensioner C3202. CONNECT passenger seat safety belt buckle pretensioner C3202. REPOWER the supplemental restraint system (SRS). REPAIR circuit 987 (RD/WH). TEST the system for normal operation. diagnostic tool from passenger seat safety belt buckle pretensioner C3202. CONNECT passenger seat safety belt Is the resistance less than 5 ohms between the power seat buckle pretensioner C3202. REPOWER motor and the seat control switch, and greater than 10,000 the supplemental restraint system (SRS). ohms between the seat control switch and ground? F17 DETERMINE SEAT TILTING FAILURE PASSENGER SEAT Determine seat tilting failure. Can the seat be tilted forward or backward? If only the forward tilting operates, GO to F18. If only the rear tilting operates, GO to F21. INSTALL a new seat control switch. REFER to Seat Control Switch 6-Way in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat safety belt buckle pretensioner C3202. CONNECT passenger seat safety belt buckle pretensioner C3202. REPOWER the supplemental restraint system (SRS). F18 CHECK THE VOLTAGE TO THE REAR HEIGHT MOTOR PASSENGER SEAT Disconnect: Power Seat Motor C3075.

25 Seating DIAGNOSIS AND TESTING PINPOINT TEST F: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY EXPEDITION F18 CHECK THE VOLTAGE TO THE REAR HEIGHT MOTOR PASSENGER SEAT Measure the voltage between power seat motor C3075-2, circuit 989 (RD/LG), harness side and C3075-1, circuit 988 (YE/LG), harness side while depressing the rear tilt switch up and down. F19 INSTALL a new rear height power seat motor. REFER to Front Seat Track Motor in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat safety belt buckle pretensioner C3202. CONNECT passenger seat safety belt buckle pretensioner C3202. REPOWER the Is the voltage greater than +10 volts when the rear tilt supplemental restraint system (SRS). switch is pressed up, greater than -10 volts when the rear tilt switch is pressed down and 0 volts when the switch is in the rest position? GO to F19. CHECK CIRCUIT 989 (RD/LG) FOR OPEN AND A SHORT TO GROUND Disconnect: Seat Control Switch C355. Measure the resistance between seat control switch C355-8, circuit 989 (RD/LG), harness side and power seat motor C3075-2, circuit 989 (RD/LG), harness side; and between seat control switch C355-8, circuit 989 (RD/LG), harness side and ground. GO to F20. REPAIR circuit 989 (RD/LG). TEST the system for normal operation. diagnostic tool from passenger seat safety belt buckle pretensioner C3202. CONNECT passenger seat safety belt Is the resistance less than 5 ohms between the power seat buckle pretensioner C3202. REPOWER motor and the seat control switch, and greater than 10,000 the supplemental restraint system (SRS). ohms between the seat control switch and ground?