BRAKE CONTROL SYSTEM SECTION CONTENTS F BRAKES BRC-1 ABS BRC

Transcription

1 F RKES SECTION RKE CONTROL SYSTEM C D CONTENTS E S PRECUTIONS... 5 Precautions for Supplemental Restraint System (SRS) IR G and SET ELT PRE-TEN- SIONER... 5 Precautions for rake System... 5 Precautions When Using CONSULT-II... 5 CHECK POINTS FOR USING CONSULT-II... 5 Precautions for rake Control... 6 Precautions for CN System... 6 Wiring Diagrams and Trouble Diagnosis... 7 PREPRTION... 8 Special Service Tool... 8 Commercial Service Tools... 8 SYSTEM DESCRIPTION... 9 System Components... 9 S Function... 9 ED Function... 9 Fail-Safe Function... 9 S/ED SYSTEM... 9 Hydraulic Circuit Diagram CN COMMUNICTION...11 System Description...11 TROULE DIGNOSIS How to Perform Trouble Diagnoses for Quick and ccurate Repair INTRODUCTION WORK FLOW CLRIFY CONCERN EXMPLE OF DIGNOSIS SHEET Component Parts and Harness Connector Location Schematic Wiring Diagram S asic Inspection RKE FLUID LEVEL, FLUID LEK, ND RKE PD INSPECTION POWER SYSTEM TERMINL LOOSENESS ND TTERY INSPECTION S WRNING LMP INSPECTION Warning Lamp and Indicator Timing Control Unit Input/Output Signal Standard REFERENCE VLUE FROM CONSULT-II CONSULT-II Function (S) CONSULT-II SIC OPERTION PROCEDURE SELF-DIGNOSIS DT MONITOR CTIVE TEST TROULE DIGNOSIS FOR SELF-DIGNOSTIC ITEMS Wheel Sensor System S Control Unit Inspection Solenoid Valve System Inspection ctuator Motor, Motor Relay, and Circuit Inspection S Control Unit Power and Ground Systems Inspection CN Communication System Inspection TROULE DIGNOSES FOR SYMPTOMS S Works Frequently Unexpected Pedal ction Long Stopping Distance S Does Not Work Pedal Vibration or S Operation Noise S Warning Lamp Does Not Come On When Ignition Switch Is Turned On S Warning Lamp Stays On When Ignition Switch Is Turned On WHEEL SENSORS Removal and Installation REMOVL INSTLLTION SENSOR ROTOR Removal and Installation FRONT RER (C200) RER (M226) CTUTOR ND ELECTRIC UNIT (SSEMLY) Removal and Installation REMOVL INSTLLTION RC G H I J K L M RC-1

2 LS/S PRECUTIONS Precautions for Supplemental Restraint System (SRS) IR G and SET ELT PRE-TEN- SIONER Precautions for rake System Precautions When Using CONSULT-II CHECK POINTS FOR USING CONSULT-II Precautions for rake Control Precautions for CN System Wiring Diagrams and Trouble Diagnosis PREPRTION Special Service Tool Commercial Service Tools SYSTEM DESCRIPTION System Components S Function ED Function LS Function Fail-Safe Function S/ED SYSTEM LS SYSTEM Hydraulic Circuit Diagram CN COMMUNICTION System Description TROULE DIGNOSIS How to Perform Trouble Diagnoses for Quick and ccurate Repair INTRODUCTION WORK FLOW CLRIFY CONCERN EXMPLE OF DIGNOSIS SHEET Component Parts and Harness Connector Location Schematic Wiring Diagram LS asic Inspection RKE FLUID LEVEL, FLUID LEK, ND RKE PD INSPECTION POWER SYSTEM TERMINL LOOSENESS ND TTERY INSPECTION S WRNING LMP ND SLIP INDICTOR LMP INSPECTION Warning Lamp and Indicator Timing Control Unit Input/Output Signal Standard REFERENCE VLUE FROM CONSULT-II CONSULT-II Function (S) CONSULT-II SIC OPERTION PROCEDURE SELF-DIGNOSIS DT MONITOR CTIVE TEST TROULE DIGNOSIS FOR SELF-DIGNOSTIC ITEMS Wheel Sensor System Inspection Engine System Inspection S/LS Control Unit Inspection Solenoid and Change-Over Valve System Inspection RC-2 ctuator Motor, Motor Relay, and Circuit Inspection...75 Stop Lamp Switch System Inspection...76 S/LS Control Unit Power and Ground Systems Inspection...77 rake Fluid Level Switch System Inspection...78 Pressure Sensor System Inspection...78 CN Communication System Inspection...80 TROULE DIGNOSES FOR SYMPTOMS...81 S Works Frequently...81 Unexpected Pedal ction...82 Long Stopping Distance...83 S Does Not Work...83 Pedal Vibration or S Operation Noise...83 S Warning Lamp Does Not Come On When Ignition Switch Is Turned On...84 S Warning Lamp Stays On When Ignition Switch Is Turned On...84 WHEEL SENSORS...85 Removal and Installation...85 REMOVL...85 INSTLLTION...85 SENSOR ROTOR...86 Removal and Installation...86 FRONT...86 RER (C200)...86 RER (M226)...86 CTUTOR ND ELECTRIC UNIT (SSEMLY)...87 Removal and Installation...87 REMOVL...87 INSTLLTION...88 VDC/TCS/S PRECUTIONS...89 Precautions for Supplemental Restraint System (SRS) IR G and SET ELT PRE-TEN- SIONER...89 Precautions for rake System...89 Precautions When Using CONSULT-II...89 CHECK POINTS FOR USING CONSULT-II...89 Precautions for rake Control...90 Precautions for CN System...91 Wiring Diagrams and Trouble Diagnosis...91 PREPRTION...92 Special Service Tool...92 Commercial Service Tools...92 SYSTEM DESCRIPTION...93 System Components...93 S Function...94 ED Function...94 TCS Function...94 VDC Function...94 Fail-Safe Function...94 S/ED SYSTEM...95 VDC/TCS SYSTEM...95 Hydraulic Circuit Diagram...95 CN COMMUNICTION...96 System Description...96

3 RC-3 TROULE DIGNOSIS How to Perform Trouble Diagnoses for Quick and ccurate Repair INTRODUCTION WORK FLOW CLRIFY CONCERN EXMPLE OF DIGNOSIS SHEET Component Parts and Harness Connector Location. 100 Schematic Wiring Diagram VDC asic Inspection RKE FLUID LEVEL, FLUID LEK, ND RKE PD INSPECTION POWER SYSTEM TERMINL LOOSENESS ND TTERY INSPECTION S WRNING LMP, SLIP INDICTOR LMP ND VDC OFF INDICTOR LMP INSPECTION. 109 For Fast and ccurate Diagnosis PRECUTIONS FOR DIGNOSIS Warning Lamp and Indicator Timing Control Unit Input/Output Signal Standard REFERENCE VLUE FROM CONSULT-II CONSULT-II Function (S) CONSULT-II SIC OPERTION PROCEDURE..114 SELF-DIGNOSIS DT MONITOR CTIVE TEST TROULE DIGNOSIS FOR SELF-DIGNOSTIC ITEMS Wheel Sensor System Inspection Engine System Inspection S/TCS/VDC Control Unit Inspection Steering ngle Sensor System Yaw Rate/Side/Decel G Sensor System Inspection. 127 Solenoid and VDC Change-Over Valve System Inspection ctuator Motor, Motor Relay, and Circuit Inspection. 130 Stop Lamp Switch System Inspection S/TCS/VDC Control Unit Power and Ground Systems Inspection rake Fluid Level Sensor System Inspection Pressure Sensor System Inspection Steering ngle Sensor Safe Mode Inspection CN Communication System Inspection Inspection For Self-diagnosis Result "ST NGLE SEN SIGNL" Inspection For Self-diagnosis Result "DECEL G SEN SET" VDC OFF Indicator lamp Does Not Illuminate Component Inspection VDC OFF SWITCH TROULE DIGNOSES FOR SYMPTOMS S Works Frequently Unexpected Pedal ction Long Stopping Distance S Does Not Work Pedal Vibration or S Operation Noise S Warning Lamp Does Not Come On When Ignition Switch Is Turned On S Warning Lamp Stays On When Ignition Switch Is Turned On Vehicle Jerks During TCS/VDC ctivation ON-VEHICLE SERVICE djustment of Steering ngle Sensor Neutral Position WITH CONSULT-II WITHOUT CONSULT-II Calibration of Decel G Sensor WHEEL SENSORS Removal and Installation REMOVL INSTLLTION SENSOR ROTOR Removal and Installation FRONT RER (C200) RER (M226) CTUTOR ND ELECTRIC UNIT (SSEMLY).146 Removal and Installation REMOVL INSTLLTION STEERING NGLE SENSOR Removal and Installation G SENSOR Removal and Installation REMOVL INSTLLTION HDC/HS/VDC/TCS/S PRECUTIONS Precautions for Supplemental Restraint System (SRS) IR G and SET ELT PRE-TEN- SIONER Precautions for rake System Precautions When Using CONSULT-II CHECK POINTS FOR USING CONSULT-II Precautions for rake Control Precautions for CN System Wiring Diagrams and Trouble Diagnosis PREPRTION Special Service Tool Commercial Service Tools SYSTEM DESCRIPTION System Components S Function ED Function TCS Function VDC Function HDC Function HS Function Fail-Safe Function S/ED SYSTEM HDC/HS SYSTEM VDC/TCS SYSTEM Hydraulic Circuit Diagram C D E RC G H I J K L M

4 CN COMMUNICTION System Description TROULE DIGNOSIS How to Perform Trouble Diagnoses for Quick and ccurate Repair INTRODUCTION WORK FLOW CLRIFY CONCERN EXMPLE OF DIGNOSIS SHEET Component Parts and Harness Connector Location.162 Schematic Wiring Diagram VDC asic Inspection RKE FLUID LEVEL, FLUID LEK, ND RKE PD INSPECTION POWER SYSTEM TERMINL LOOSENESS ND TTERY INSPECTION S WRNING LMP, SLIP INDICTOR LMP, VDC OFF INDICTOR LMP ND HDC INDI- CTOR LMP INSPECTION For Fast and ccurate Diagnosis PRECUTIONS FOR DIGNOSIS Warning Lamp and Indicator Timing Control Unit Input/Output Signal Standard REFERENCE VLUE FROM CONSULT-II CONSULT-II Function (S) CONSULT-II SIC OPERTION PROCEDURE.177 SELF-DIGNOSIS DT MONITOR CTIVE TEST TROULE DIGNOSIS FOR SELF-DIGNOSTIC ITEMS Wheel Sensor System Inspection Engine System Inspection S/TCS/VDC Control Unit Inspection Steering ngle Sensor System Yaw Rate/Side/Decel G Sensor System Inspection.191 Solenoid and VDC Change-Over Valve System Inspection ctuator Motor, Motor Relay, and Circuit Inspection.194 Stop Lamp Switch System Inspection S/TCS/VDC Control Unit Power and Ground Systems Inspection rake Fluid Level Sensor System Inspection ctive ooster System Inspection Pressure Sensor System Inspection Steering ngle Sensor Safe Mode Inspection CN Communication System Inspection Inspection For Self-diagnosis Result "ST NGLE SEN SIGNL" Inspection For Self-diagnosis Result "DECEL G SEN SET" VDC OFF Indicator lamp Does Not Illuminate Component Inspection VDC OFF SWITCH HDS SWITCH TROULE DIGNOSES FOR SYMPTOMS S Works Frequently Unexpected Pedal ction Long Stopping Distance S Does Not Work Pedal Vibration or S Operation Noise S Warning Lamp Does Not Come On When Ignition Switch Is Turned On S Warning Lamp Stays On When Ignition Switch Is Turned On Vehicle Jerks During TCS/VDC ctivation Stop Lamp Relay Inspection HDC Switch Inspection ON-VEHICLE SERVICE djustment of Steering ngle Sensor Neutral Position WITH CONSULT-II WITHOUT CONSULT-II Calibration of Decel G Sensor WHEEL SENSORS Removal and Installation REMOVL INSTLLTION SENSOR ROTOR Removal and Installation FRONT RER CTUTOR ND ELECTRIC UNIT (SSEMLY).216 Removal and Installation REMOVL INSTLLTION STEERING NGLE SENSOR Removal and Installation G SENSOR Removal and Installation REMOVL INSTLLTION RC-4

5 PRECUTIONS RC-5 [S] PRECUTIONS PFP:00001 Precautions for Supplemental Restraint System (SRS) IR G and SET ELT PRE-TENSIONER EFS005U1 The Supplemental Restraint System such as IR G and SET ELT PRE-TENSIONER, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. Information necessary to service the system safely is included in the SRS and S section of this Service Manual. WRNING: To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSN/INFINITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and ir ag Module, see the SRS section. Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. Precautions for rake System CUTION: Refer to M-11, "RECOMMENDED FLUIDS ND LURICNTS" for recommended brake fluid. Never reuse drained brake fluid. e careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is splashed on painted areas, wash it away with water immediately. To clean or wash all parts of master cylinder and disc brake caliper, use clean brake fluid. Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system. Use flare nut wrench when removing and installing brake tube. If a brake fluid leak is found, the part must be disassembled without fail. Then it has to be replaced with a new one if a defect exists. Turn the ignition switch OFF and remove the connector of the S actuator and electric unit (control unit) or the battery terminal before performing the work. lways torque brake lines when installing. urnish the brake contact surfaces after refinishing or SR686C replacing rotors, after replacing pads, or if a soft pedal occurs at very low mileage. Refer to R-27, "RKE URNISHING PROCEDURE" (front disc brake) or R-32, "RKE UR- NISHING PROCEDURE" (rear disc brake). WRNING: Clean brake pads and shoes with a waste cloth, then wipe with a dust collector. Precautions When Using CONSULT-II When connecting CONSULT-II to data link connector, connect them through CONSULT-II CONVERTER. CUTION: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carries out CN communication. CHECK POINTS FOR USING CONSULT-II 1. Has CONSULT-II been used without connecting CONSULT-II CONVERTER on this vehicle? If YES, GO TO 2. EFS005KN EFS005KO C D E RC G H I J K L M

6 PRECUTIONS [S] If NO, GO TO Is there any indication other than indications relating to CN communication system in the self-diagnosis results? If YES, GO TO 3. If NO, GO TO ased on self-diagnosis results unrelated to CN communication, carry out the inspection. 4. Malfunctions may be detected in self-diagnosis depending on control units carrying out CN communication. Therefor, erase the self-diagnosis results. 5. Diagnose CN communication system. Refer to LN-21, "CN COMMUNICTION". Precautions for rake Control During S operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is normal. During HDC operation, a mechanical noise may be heard. This is normal. Just after starting vehicle, the brake pedal may vibrate or a motor operating noise may be heard from engine compartment. This is a normal status of operation check. Stopping distance may be longer than that of vehicles without S when vehicle drives on rough, gravel, or snow-covered (fresh, deep snow) roads. When an error is indicated by S or another warning lamp, collect all necessary information from customer (what symptoms are present under what conditions) and check for simple causes before starting diagnosis. esides electrical system inspection, check brake booster operation, brake fluid level, and fluid leaks. If incorrect tire sizes or types are installed on the vehicle or brake pads are not Genuine NISSN parts, stopping distance or steering stability may deteriorate. If there is a radio, antenna or related wiring near control module, S function may have a malfunction or error. If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness pinches, open circuits or improper wiring. Precautions for CN System Do not apply voltage of 7.0V or higher to terminal to be measured. Maximum open terminal voltage of tester in use must be less than 7.0V. efore checking harnesses, turn ignition switch OFF and disconnect battery negative cable. rea to be repaired must be soldered and wrapped with tape. Make sure that fraying of twisted wire is within 110 mm (4.33 in). EFS005KP EFS005KQ PKI0306E RC-6

7 PRECUTIONS Do not make a bypass connection to repaired area. (If the circuit is bypassed, characteristics of twisted wire will be lost.) [S] C Wiring Diagrams and Trouble Diagnosis When you read wiring diagrams, refer to the following: GI-16, "How to Read Wiring Diagrams". PG-4, "POWER SUPPLY ROUTING CIRCUIT". When you perform trouble diagnosis, refer to the following: GI-12, "HOW TO FOLLOW TEST GROUPS IN TROULE DIGNOSES". GI-28, "How to Perform Efficient Diagnosis for an Electrical Incident". PKI0307E EFS005KR D E RC G H I J K L M RC-7

8 PREPRTION Special Service Tool PREPRTION [S] The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here. PFP:00002 EFS005KS Tool number (Kent-Moore No.) Tool name (J-45741) S active wheel sensor tester Description Checking operation of S active wheel sensors WFI0101E 205-D002 ( ) earing splitter Removing axle shaft bearing ZZ0700D Commercial Service Tools EFS005KT Tool name 1. Flare nut crowfoot 2. Torque wrench Description Removing and installing brake piping a: 10mm (0.39 in)/12mm (0.47 in) S-NT360 RC-8

9 SYSTEM DESCRIPTION System Components SYSTEM DESCRIPTION [S] PFP:00000 EFS005KU C D E RC WFI0360E G S Function The nti-lock rake System detects wheel revolution while braking and improves handling stability during sudden braking by electrically preventing wheel lockup. Maneuverability is also improved for avoiding obstacles. If the electrical system malfunctions, the Fail-Safe function is activated, the S becomes inoperative and the S warning lamp turns on. The electrical system can be diagnosed using CONSULT-II. During S operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is normal. Just after starting the vehicle, the brake pedal may vibrate or a motor operating noise may be heard from engine compartment. This is a normal status of operation check. Stopping distance may be longer than that of vehicles without S when vehicle drives on rough, gravel, or snow-covered (fresh, deep snow) roads. ED Function EFS005KV EFS005KW Electronic rake Distribution is a function that detects subtle slippages between the front and rear wheels during braking, and it improves handling stability by electronically controlling the brake fluid pressure which results in reduced rear wheel slippage. If the electrical system malfunctions, the Fail-Safe function is activated, the ED and S become inoperative, and the S warning lamp and brake warning lamp are turned on. The electrical system can be diagnosed using CONSULT-II. During ED operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is normal. Just after starting the vehicle, the brake pedal may vibrate or a motor operating noise may be heard from engine compartment. This is a normal status of operation check. Fail-Safe Function CUTION: If the Fail-Safe function is activated, perform the Self Diagnosis for S system. S/ED SYSTEM In case of an electrical malfunction with the S, the S warning lamp will turn on. In case of an electrical malfunction with the ED system, the brake warning lamp and the S warning lamp will turn on. The system will revert to one of the following conditions of the Fail-Safe function. EFS005KX H I J K L M RC-9

10 SYSTEM DESCRIPTION [S] 1. For S malfunction, only the ED is operative and the condition of the vehicle is the same condition of vehicles without S system. 2. For ED malfunction, the ED and S become inoperative, and the condition of the vehicle is the same as the condition of vehicles without S or ED system. Hydraulic Circuit Diagram EFS005KY WFI0369E 1. Inlet solenoid valve 2. Outlet solenoid valve 3. Reservoir 4. Pump 5. Motor 6. Inlet valve 7. Outlet valve 8. ypass check valve 9. Damper 10. Pressure switch RC-10

11 CN COMMUNICTION CN COMMUNICTION System Description Refer to LN-21, "CN COMMUNICTION". [S] PFP:23710 EFS005KZ C D E RC G H I J K L M RC-11

12 TROULE DIGNOSIS TROULE DIGNOSIS How to Perform Trouble Diagnoses for Quick and ccurate Repair INTRODUCTION The S system has an electronic control unit to control major functions. The control unit accepts input signals from sensors and controls actuator operation. It is also important to check for conventional problems such as air leaks in the booster or lines, lack of brake fluid, or other problems with the brake system. It is much more difficult to diagnose a problem that occurs intermittently rather than continuously. Most intermittent problems are caused by poor electrical connections or faulty wiring. In this case, careful checking of suspicious circuits may help prevent the replacement of good parts. visual check only may not find the cause of the problem, so a road test should be performed. efore undertaking actual checks, take just a few minutes to talk with a customer who approaches with an S complaint. The customer is a very good source of information on such problems, especially intermittent ones. Through the talks with the customer, find out what symptoms are present and under what conditions they occur. Start your diagnosis by looking for conventional problems first. This is one of the best ways to troubleshoot brake problems on an S equipped vehicle. lso check related Service ulletins for information. [S] PFP:00000 EFS005L0 SEF233G SEF234G RC-12

13 WORK FLOW TROULE DIGNOSIS [S] C D E RC G H I J K L M LFI0197E RC-13

14 CLRIFY CONCERN TROULE DIGNOSIS customer's description of a vehicle concern may vary depending on the individual. It is important to clarify the customer's concern. sk the customer about what symptoms are present under what conditions. Use this information to reproduce the symptom while driving. It is also important to use the diagnosis sheet to understand what type of trouble the customer is having. [S] EXMPLE OF DIGNOSIS SHEET SR339 WFI0226E RC-14

15 TROULE DIGNOSIS Component Parts and Harness Connector Location [S] EFS005L1 C D E RC G H I J K L M WFI0361E RC-15

16 Schematic TROULE DIGNOSIS [S] EFS005L2 WFW0229E RC-16

17 Wiring Diagram S TROULE DIGNOSIS [S] EFS005L3 C D E RC G H I J K L M WFW0230E RC-17

18 TROULE DIGNOSIS [S] WFW0231E RC-18

19 TROULE DIGNOSIS [S] C D E RC G H I J K L M WFW0232E RC-19

20 TROULE DIGNOSIS [S] WFW0233E RC-20

21 asic Inspection TROULE DIGNOSIS [S] RKE FLUID LEVEL, FLUID LEK, ND RKE PD INSPECTION 1. Check fluid level in the brake fluid reservoir. If fluid level is low, add fluid. 2. Check the brake piping and around the S actuator and electric unit (control unit) for leaks. If there is leaking or seeping fluid, check the following items. If S actuator and electric unit (control unit) connection is loose, tighten the piping to the specified torque and recheck for leaks. If there is damage to the connection flare nut or S actuator and electric unit (control unit) threads, replace the damaged part and recheck for leaks. When there is fluid leaking or seeping from a fluid connection, use a clean cloth to wipe off the fluid and recheck for leaks. If fluid is still seeping out, replace the damaged part. If the fluid is leaking at the S actuator and electric unit (control unit), replace the S actuator and electric unit (control unit) assembly. CUTION: The S actuator and electric unit (control unit) cannot be disassembled and must be replaced as an assembly. 3. Check the brake pads for excessive wear. POWER SYSTEM TERMINL LOOSENESS ND TTERY INSPECTION Make sure the battery positive cable, negative cable and ground connection are not loose. In addition, make sure the battery is sufficiently charged. S WRNING LMP INSPECTION 1. Make sure S warning lamp turns on for approximately 2 seconds when the ignition switch is turned ON. If it does not, check CN communications. If there are no errors with the CN communication system, check the combination meter. Refer to DI-4, "COMINTION METERS". 2. Make sure the lamp turns off approximately 2 seconds after the ignition switch is turned ON. If the lamp does not turn off, conduct self-diagnosis. 3. Make sure S warning lamp turns off approximately 2 seconds after the engine is started. If S warning lamp has not turned off 10 seconds after the engine has been started, conduct self-diagnosis of the S actuator and electric unit (control unit). 4. fter conducting the self-diagnosis, be sure to erase the error memory. Refer to RC-24, "CONSULT-II Function (S)". EFS005L4 C D E RC G H I J K L M RC-21

22 Warning Lamp and Indicator Timing TROULE DIGNOSIS [S] EFS005L5 Condition S warning lamp Remarks When the ignition switch is OFF fter the ignition switch is turned ON for approx. 1 second fter the ignition switch is turned ON for approx. 2 seconds S malfunction X: ON : OFF Control Unit Input/Output Signal Standard REFERENCE VLUE FROM CONSULT-II CUTION: The display shows the control unit calculation data, so a normal value might be displayed even in the event the output circuit (harness) is open or short circuited. Monitor item FR RH SENSOR FR LH SENSOR RR RH SENSOR RR LH SENSOR TTERY VOLT CRNKING SIG STOP LMP SW S WRN LMP ED WRN LMP MOTOR RELY CTUTOR RLY Display content Wheel speed attery voltage supplied to S actuator and electric unit (control unit) Cranking status Stop lamp switch operation S warning lamp ON condition (Note 2) ED warning lamp status Operation status of motor and motor relay ctuator relay operation status Lamp goes off approx. 2 seconds after the engine is started. Condition Vehicle stopped Vehicle running (Note 1) Ignition switch ON Cranking Not cranking rake pedal depressed Data monitor rake pedal not depressed When the S actuator and electric unit (control unit) is malfunctioning (power supply or ground malfunction). Reference value in normal operation 0 [km/h (MPH)] lmost in accordance with speedometer display (within ±10%) 10 to 16V ON OFF ON OFF Note: Error inspection checklist EFS005L6 RC-30, "Wheel Sensor System" RC-34, "S Control Unit Power and Ground Systems Inspection" S warning lamp ON ON RC-38, "S Warning Lamp Does Not Come S warning lamp OFF OFF On When Ignition Switch Is Turned On" When ED warning lamp is on ON RC-34, "CN Communication System Inspection" When ED warning lamp is off OFF Ignition switch ON or running (S not activated) Ignition switch ON or engine running (S activated) Vehicle stopped (Ignition switch ON) Vehicle stopped (Engine running) OFF ON OFF ON RC-33, "ctuator Motor, Motor Relay, and Circuit Inspection" RC-33, "ctuator Motor, Motor Relay, and Circuit Inspection" RC-22

23 Monitor item FR LH IN SOL FR LH OUT SOL FR RH IN SOL FR RH OUT SOL RER IN SOL RER OUT SOL S SIGNL ED SIGNL S FIL SIG ED FIL SIG Display content Solenoid valve operation Signal status Fail signal status TROULE DIGNOSIS ctuator (solenoid) is active ( CTIVE TEST with CON- SULT-II) or actuator relay is inactive (in fail-safe mode). When actuator (solenoid) is not active and actuator relay is active (ignition switch ON). S active ED active S not active ED not active S fail ED fail S normal ED normal Condition Data monitor Reference value in normal operation Note 1: Confirm tire pressure is normal. Note 2: ON/OFF timing of S warning lamp ON: For approximately 2 seconds after ignition switch is turned ON, or when a malfunction is detected. OFF: pproximately 2 seconds after ignition switch is turned ON (when system is in normal operation). ON OFF ON OFF ON OFF [S] Note: Error inspection checklist RC-32, "Solenoid Valve System Inspection" S system ED system S system ED system C D E RC G H I J K L M RC-23

24 CONSULT-II Function (S) TROULE DIGNOSIS CONSULT-II can display each diagnostic item using the diagnostic test modes shown following. S diagnostic mode WORK SUPPORT SELF-DIG RESULTS DT MONITOR CN DIG SUPPORT MNTR CTIVE TEST FUNCTION TEST ECU PRT NUMER Description CONSULT-II SIC OPERTION PROCEDURE 1. Turn ignition switch OFF. 2. Connect CONSULT-II and CONSULT-II CONVERTER to the data link connector. CUTION: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carries out CN communication. 3. Turn ignition switch ON. [S] Supports inspection and adjustments. Commands are transmitted to the S actuator and electric unit (control unit) for setting the status suitable for required operation, input/output signals are received from the S actuator and electric unit (control unit) and received data is displayed. Displays S actuator and electric unit (control unit) self-diagnosis results. Displays S actuator and electric unit (control unit) input/output data in real time. The result of transmit/receive diagnosis of CN communication can be read. Operation of electrical loads can be checked by sending drive signal to them. Conducted by CONSULT-II instead of a technician to determine whether each system is "OK" or "NG". S actuator and electric unit (control unit) part number can be read. EFS005L7 I0538E 4. Touch STRT (NISSN SED VHCL). CI0029E 5. Touch S in the SELECT SYSTEM screen. If S is not indicated, go to GI-39, "CONSULT-II Data Link Connector (DLC) Circuit". CI0030E RC-24

25 TROULE DIGNOSIS 6. Select the required diagnostic location from the SELECT DIG MODE screen. For further information, see the CONSULT-II Operation Manual. [S] C CI0031E SELF-DIGNOSIS Description If an error is detected in the system, the S warning lamp will turn on. In this case, perform self-diagnosis as follows: Operation Procedure 1. Turn ignition switch OFF. 2. Connect CONSULT-II and CONSULT-II CONVERTER to the data link connector. CUTION: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carries out CN communication. 3. Turn ignition switch ON. 4. Start engine and drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute. 5. fter stopping the vehicle, with the engine running, touch STRT (NISSN SED VHCL), S, SELF-DIG RESULTS in order on the CONSULT-II screen. CUTION: If STRT (NISSN SED VHCL) is touched immediately after starting the engine or turning on the ignition switch, S might not be displayed in the SELECT SYSTEM screen. In this case, repeat the operation from step The self-diagnostic results are displayed. (If necessary, the self-diagnostic results can be printed out by touching PRINT.) When NO DTC IS DETECTED is displayed, check the S warning lamp. 7. Conduct the appropriate inspection from the display item list, and repair or replace the malfunctioning component. 8. Start engine and drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute. CUTION: When a wheel sensor short-circuit is detected, if the vehicle is not driven at 30 km/h (19 MPH) for at least 1 minute, the S warning lamp will not turn off even if the malfunction is repaired. 9. Turn ignition switch OFF to prepare for erasing the memory. 10. Start the engine and touch STRT (NISSN SED VHCL), S, SELF-DIG RESULTS, ERSE in order on the CONSULT-II screen to erase the error memory. If S is not indicated, go to GI-39, "CONSULT-II Data Link Connector (DLC) Circuit". CUTION: If the error memory is not erased, re-conduct the operation from step For the final inspection, drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute and confirm that the S warning lamp is off. D E RC G H I J K L M RC-25

26 Display Item List TROULE DIGNOSIS Self-diagnostic item Malfunction detecting condition Check system FR LH SENSOR 1 [C1104] RR RH SENSOR 1 [C1101] FR RH SENSOR 1 [C1103] RR LH SENSOR 1 [C1102] FR LH SENSOR 2 [C1108] RR RH SENSOR 2 [C1105] FR RH SENSOR 2 [C1107] RR LH SENSOR 2 [C1106] S SENSOR [C1115] TTERY VOLTGE [NORML] [C1109] CONTROLLER FILURE [C1110] PUMP MOTOR (Note 3) [C1111] G-SENSOR [C1113] FR LH IN S SOL [C1120] FR LH OUT S SOL [C1121] FR RH IN S SOL [C1122] FR RH OUT S SOL [C1123] R-EV [C1190] R-V [C1191] CTUTOR RLY [C1140] Circuit of front LH wheel sensor is open, shorted or sensor power voltage is unusual. Circuit of rear RH wheel sensor is open, shorted or sensor power voltage is unusual. Circuit of front RH wheel sensor is open, shorted or sensor power voltage is unusual. Circuit of rear LH wheel sensor is open, shorted or sensor power voltage is unusual. S actuator and electric unit (control unit) cannot identify sensor pulses, because of large gap between wheel sensor and sensor rotor. S actuator and electric unit (control unit) cannot identify sensor pulses, because of large gap between wheel sensor and sensor rotor. S actuator and electric unit (control unit) cannot identify sensor pulses, because of large gap between wheel sensor and sensor rotor. S actuator and electric unit (control unit) cannot identify sensor pulses, because of large gap between wheel sensor and sensor rotor. Wheel sensor input is abnormal. S actuator and electric unit (control unit) power voltage is too low. Internal malfunction of S actuator and electric unit (control unit) During actuator motor operation with ON, when actuator motor turns OFF or when control line for actuator motor relay is open. During actuator motor operation with OFF, when actuator motor turns ON or when control line for relay is shorted to ground. G-sensor is malfunctioning. Circuit of front LH IN S solenoid is open or shorted, or control line is open or shorted to power supply or ground. Circuit of front LH OUT S solenoid is open or shorted, or control line is open or shorted to power supply or ground. Circuit of front RH IN S solenoid is open or shorted, or control line is open or shorted to power supply or ground. Circuit of front RH OUT S solenoid is open or shorted, or control line is open or shorted to power supply or ground. Circuit of rear IN S solenoid is open or shorted, or control line is open or shorted to power supply or ground. Circuit of rear OUT S solenoid is open or shorted, or control line is open or shorted to power supply or ground. S actuator relay or circuit malfunction. [S] RC-30, "Wheel Sensor System" (Note 1) RC-34, "S Control Unit Power and Ground Systems Inspection" RC-31, "S Control Unit Inspection" RC-33, "ctuator Motor, Motor Relay, and Circuit Inspection" RC-31, "S Control Unit Inspection" RC-32, "Solenoid Valve System Inspection" RC-33, "ctuator Motor, Motor Relay, and Circuit Inspection" RC-26

27 TROULE DIGNOSIS [S] Self-diagnostic item Malfunction detecting condition Check system VRINT CODING [C1170] CN COMM CIRCUIT [U1000] V coding is not malfunctioning. CN communication line is open or shorted. S actuator and electric unit (control unit) internal malfunction attery voltage for ECM is suddenly interrupted for approximately 0.5 second or more. RC-31, "S Control Unit Inspection" RC-34, "CN Communication System Inspection" (Note 2) Note 1. If wheel sensor 2 for each wheel is indicated, check S actuator and electric unit (control unit) power supply voltage in addition to wheel sensor circuit check. Note 2. If multiple malfunctions are detected including CN communication line [U1000], perform diagnosis for CN communication line first. Note 3: "CTUTOR RLY" on the CONSULT-II self-diagnosis results indicates the malfunction of the actuator motor relay or circuit. DT MONITOR Operation Procedure 1. fter turning OFF the ignition switch, connect CONSULT-II and the CONSULT-II CONVERTER to the data link connector. CUTION: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carries out CN communication. 2. Touch STRT (NISSN SED VHCL), S, DT MONITOR in order on the CONSULT-II screen. If S is not indicated, go to GI-39, "CONSULT-II Data Link Connector (DLC) Circuit". CUTION: When STRT (NISSN SED VHCL) is touched immediately after starting the engine or turning on the ignition switch, S might not be displayed in the SELECT SYSTEM screen. In this case, repeat the operation from step Return to the SELECT MONITOR ITEM screen, and touch ECU INPUT SIGNLS, MIN SIGNLS or SELECTION FROM MENU. Refer to the following information. 4. When STRT is touched, the data monitor screen is displayed. Display Item List FR RH SENSOR (km/h, MPH) FR LH SENSOR (km/h, MPH) RR RH SENSOR (km/h, MPH) RR LH SENSOR (km/h, MPH) TTERY VOLT (V) Item (Unit) STOP LMP SW (ON/OFF) S WRN LMP (ON/OFF) ECU INPUT SIGNLS Data monitor item selection MIN SIGNLS SELECTION FROM MENU ED WRN LMP FR LH IN SOL (ON/OFF) Remarks Wheel speed calculated by front RH wheel sensor signal is displayed. Wheel speed calculated by front LH wheel sensor signal is displayed. Wheel speed calculated by rear RH wheel sensor signal is displayed. Wheel speed calculated by rear LH wheel sensor signal is displayed. Voltage supplied to S actuator and electric unit (control unit) is displayed. Stop lamp switch (ON/OFF) status is displayed. S warning lamp (ON/OFF) status is displayed. rake warning lamp (ON/OFF) status is displayed. Front LH IN S solenoid (ON/ OFF) status is displayed. C D E RC G H I J K L M RC-27

28 TROULE DIGNOSIS [S] FR LH OUT SOL (ON/OFF) FR RH IN SOL (ON/OFF) FR RH OUT SOL (ON/OFF) RER IN SOL (ON/OFF) RER OUT SOL (ON/OFF) MOTOR RELY (ON/OFF) CTUTOR RLY (ON/OFF) S FIL SIG (ON/OFF) ED FIL SIG (ON/OFF) ED SIGNL (ON/OFF) S SIGNL (ON/OFF) : pplicable : Not applicable Item (Unit) ECU INPUT SIGNLS Data monitor item selection MIN SIGNLS SELECTION FROM MENU CRNKING SIG Remarks Front LH OUT S solenoid (ON/ OFF) status is displayed. Front RH IN S solenoid (ON/ OFF) status is displayed. Front RH OUT S solenoid (ON/ OFF) status is displayed. Rear IN S solenoid (ON/OFF) status is displayed. Rear OUT S solenoid (ON/OFF) status is displayed. S motor relay signal (ON/OFF) status is displayed. S actuator relay signal (ON/ OFF) status is displayed. S fail signal (ON/OFF) status is displayed. ED fail signal (ON/OFF) status is displayed. ED operation (ON/OFF) status is displayed. S operation (ON/OFF) status is displayed. The input state of the key SW STRT position signal is displayed. CTIVE TEST CUTION: Do not perform active test while driving. Make sure to completely bleed air from the brake system. The S and brake warning lamps turn on during the active test. Operation Procedure 1. Connect the CONSULT-II and CONSULT-II CONVERTER to the data link connector and start the engine. CUTION: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carries out CN communication. 2. Touch STRT (NISSN SED VHCL) on the display screen. 3. Touch S. If S is not indicated, go to GI-39, "CONSULT-II Data Link Connector (DLC) Circuit". 4. Touch CTIVE TEST. RC-28

29 5. The SELECT TEST ITEM screen is displayed. 6. Touch necessary test item. TROULE DIGNOSIS [S] C 7. With the MIN SIGNLS display selected, touch STRT. 8. The ctive Test screen will be displayed, so conduct the following test. Solenoid Valve Operation Chart FR RH SOL FR RH S SOLE- NOID (CT) FR LH SOL FR LH S SOLE- NOID (CT) RER SOL Operation *: ON for 1 to 2 seconds after the touch, and then OFF S solenoid valve UP KEEP DOWN UP S solenoid valve (CT) CTU- TOR UP NOTE: If active test is performed with brake pedal depressed, pedal stroke may change. This is normal. TEST IS STOPPED is displayed approximately 10 seconds after operation starts. fter TEST IS STOPPED is displayed, to perform test again, repeat Step 6. S Motor Touch ON and OFF on the screen. Check that S motor relay operates as shown in table below. LR379 CTU- TOR KEEP FR RH IN SOL OFF ON ON OFF OFF OFF FR RH OUT SOL OFF OFF ON* OFF OFF OFF FR LH IN SOL OFF ON ON OFF OFF OFF FR LH OUT SOL OFF OFF ON* OFF OFF OFF RER IN SOL OFF ON ON OFF OFF OFF RER OUT SOL OFF OFF ON* OFF OFF OFF Operation ON OFF S actuator relay ON ON S motor relay ON OFF D E RC G H I J K L M NOTE: If active test is performed with brake pedal depressed, pedal stroke may change. This is normal. TEST IS STOPPED is displayed approximately 10 seconds after operation starts. SFI0593E RC-29

30 TROULE DIGNOSIS FOR SELF-DIGNOSTIC ITEMS TROULE DIGNOSIS FOR SELF-DIGNOSTIC ITEMS Wheel Sensor System INSPECTION PROCEDURE 1. CONNECTOR INSPECTION [S] PFP:00000 EFS005L8 Disconnect the S actuator and electric unit (control unit) connector E125 and wheel sensor of malfunctioning code. Check the terminals for deformation, disconnection, looseness or damage. OK >> GO TO 2. NG >> Repair or replace as necessary. Refer to RC-41, "Removal and Installation". 2. CHECK WHEEL SENSOR OUTPUT SIGNL 1. Connect S active wheel sensor tester (J-45741) to wheel sensor using appropriate adapter. 2. Turn on the S active wheel sensor tester power switch. NOTE: The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the battery in the S active wheel sensor tester before proceeding. 3. Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the S active wheel sensor tester. The red SENSOR indicator should flash on and off to indicate an output signal. NOTE: If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and retest. Does the S active wheel sensor tester detect a signal? YES >> GO TO 3. NO >> Replace the wheel sensor. Refer to RC-39, "Removal and Installation". 3. CHECK TIRES Check for inflation pressure, wear and size of each tire. re tire pressure and size correct and is tire wear within specifications? YES >> GO TO 4. NO >> djust tire pressure or replace tire(s). 4. CHECK WHEEL ERINGS Check wheel bearing axial end play. Refer to FX-5, "WHEEL ERING INSPECTION", RX-6, "Rear xle earing" (C200) or RX-18, "Rear xle earing" (M226). OK >> GO TO 5. NG >> Repair or replace as necessary. Refer to FX-5, "Removal and Installation", RX-12, "Removal and Installation" (C200) or RX-23, "Removal and Installation" (M226). 5. CHECK WIRING HRNESS FOR SHORT CIRCUIT 1. Disconnect S actuator and electric unit (control unit) connector and wheel sensor connector of malfunction code No. 2. Check resistance between wheel sensor harness connector terminals and ground. Continuity should not exist. OK >> GO TO 6. NG >> Repair the circuit. RC-30 WFI0343E

31 TROULE DIGNOSIS FOR SELF-DIGNOSTIC ITEMS [S] 6. CHECK WIRING HRNESS FOR OPEN CIRCUIT Check continuity between S actuator and electric unit (control unit) harness connector and wheel sensor harness connector. Front LH Front RH Rear LH Rear RH Wheel sensor OK >> Replace the S actuator and electric unit (control unit). Refer to RC-41, "Removal and Installation". NG >> Repair the circuit. S Control Unit Inspection INSPECTION PROCEDURE 1. SELF-DIGNOSIS RESULT CHECK Check self-diagnosis results. S actuator and electric unit (control unit) Wheel sensor Connector Terminal Connector Terminal E125 Continuity should exist. Self-diagnosis results CONTROLLER FILURE G-SENSOR VRINT CODING 45 1 E E C C Continuity Is the above displayed in the self-diagnosis display items? YES >> Replace S actuator and electric unit (control unit). Refer to RC-41, "Removal and Installation". NO >> Inspection End. Yes EFS005L9 C D E RC G H I J K L M RC-31

32 TROULE DIGNOSIS FOR SELF-DIGNOSTIC ITEMS Solenoid Valve System Inspection INSPECTION PROCEDURE 1. SELF-DIGNOSIS RESULT CHECK [S] EFS005L Check self-diagnosis results. Self-diagnosis results FR LH IN S SOL FR LH OUT S SOL FR RH IN S SOL FR RH OUT S SOL R-EV R-V Is the above displayed in the self-diagnosis display items? YES >> GO TO 2. NO >> Inspection End. 2. CONNECTOR INSPECTION 1. Disconnect S actuator and electric unit (control unit) connector E Check the terminals for deformation, disconnection, looseness or damage. OK >> GO TO 3. NG >> Repair or replace as necessary. 3. CHECKING SOLENOID POWER ND GROUND 1. Check voltage between S actuator and electric unit (control unit) harness connector E125 and body ground. S actuator and electric unit (control unit) harness connector E125 ody ground Measured value (pprox.) 32 12V WFI0195E 2. Check resistance between S actuator and electric unit (control unit) harness connector E125 and body ground. S actuator and electric unit (control unit) harness connector E125 ody ground Measured value Ω (pprox.) 16 0Ω 47 0Ω OK >> Perform self-diagnosis again. If the same results appear, replace S actuator and electric unit (control unit). Refer to RC-41, "Removal and Installation". NG >> Repair the circuit. WFI0196E RC-32

33 TROULE DIGNOSIS FOR SELF-DIGNOSTIC ITEMS ctuator Motor, Motor Relay, and Circuit Inspection INSPECTION PROCEDURE 1. CHECKING SELF-DIGNOSIS RESULTS Check self-diagnosis results. Self-diagnosis results PUMP MOTOR CTUTOR RLY Is the above displayed in the self-diagnosis display items? YES >> GO TO 2. NO >> Inspection End. 2. CONNECTOR INSPECTION 1. Disconnect S actuator and electric unit (control unit) connector E Check the terminals for deformation, disconnection, looseness or damage. OK >> GO TO 3. NG >> Repair or replace as necessary. 3. CHECKING S MOTOR ND MOTOR RELY POWER SYSTEM 1. Check voltage between S actuator and electric unit (control unit) harness connector E125 and ground. S actuator and electric unit (control unit) harness connector E125 ody ground Measured value (pprox.) 1 12V [S] EFS005L C D E RC G H I J 2. Check resistance between S actuator and electric unit (control unit) connector E125 and ground. S actuator and electric unit (control unit) harness connector E125 ody ground Measured value (pprox.) 16 0Ω 47 0Ω OK >> Perform self-diagnosis again. If the same results appear, replace S actuator and electric unit (control unit). Refer to RC-41, "Removal and Installation". NG >> Repair the circuit. WFI0209E WFI0196E K L M RC-33

34 TROULE DIGNOSIS FOR SELF-DIGNOSTIC ITEMS S Control Unit Power and Ground Systems Inspection INSPECTION PROCEDURE 1. SELF-DIGNOSIS RESULT CHECK [S] EFS005LC Check self-diagnosis results. Self-diagnosis results TTERY VOLTGE Is the above displayed in the self-diagnosis display items? YES >> GO TO 2. NO >> Inspection End. 2. CONNECTOR INSPECTION 1. Disconnect the S actuator and electric unit (control unit) connector E Check the terminals for deformation, disconnection, looseness or damage. OK >> GO TO 3. NG >> Repair or replace as necessary. 3. S CONTROL UNIT POWER ND GROUND CIRCUIT INSPECTION Measure the voltage and continuity between the S actuator and electric unit (control unit) harness connector E125 and ground. Signal name Power supply Ground OK >> Check the battery for loose terminals, low voltage, etc. Repair as necessary. NG >> Repair the circuit. CN Communication System Inspection INSPECTION PROCEDURE 1. CHECK CONNECTOR S actuator and electric unit (control unit) harness connector E ody ground Measured value attery voltage (pprox. 12V) Continuity should exist. EFS005LD 1. Turn ignition switch OFF, disconnect the S actuator and electric unit (control unit) connector and check the terminals for deformation, disconnection, looseness, and so on. If there is a malfunction, repair or replace the terminal. 2. Reconnect connector to perform self-diagnosis. Is "CN COMM CIRCUIT" displayed in self-diagnosis display items? YES >> Print out the self-diagnostic results, and refer to LN-21, "CN COMMUNICTION". NO >> Connector terminal is loose, damaged, open, or shorted. RC-34

35 TROULE DIGNOSES FOR SYMPTOMS TROULE DIGNOSES FOR SYMPTOMS S Works Frequently [S] PFP:99999 EFS005LE 1. CHECK WRNING LMP CTIVTION Make sure warning lamp remains off while driving. OK >> GO TO 2. NG >> Carry out self-diagnosis. Refer to RC-25, "SELF-DIGNOSIS". 2. CHECK WHEEL SENSORS C D Check the following. Wheel sensor mounting for looseness Wheel sensors for physical damage Wheel sensor connectors for terminal damage or loose connections Sensor rotor and mount for physical damage (rear only) OK >> GO TO 3. NG >> Repair or replace as necessary. 3. CHECK FRONT ND RER XLES Check front and rear axles for excessive looseness. Refer to FX-5, "WHEEL ERING INSPECTION", RX-6, "Rear xle earing" (C200) or RX-18, "Rear xle earing" (M226). OK >> GO TO 4. NG >> Repair as necessary. 4. CHECK RKE FLUID PRESSURE Check brake fluid pressure distribution. Refer to RC-21, "asic Inspection". Is brake fluid pressure distribution normal? YES >> Inspection End. NO >> Perform asic Inspection. Refer to RC-21, "asic Inspection". E RC G H I J K L M RC-35

36 Unexpected Pedal ction TROULE DIGNOSES FOR SYMPTOMS [S] EFS005LF 1. CHECK WRNING LMP CTIVTION Make sure warning lamp remains off while driving. OK >> GO TO 2. NG >> Carry out self-diagnosis. Refer to RC-25, "SELF-DIGNOSIS". 2. CHECK RKE PEDL STROKE Check brake pedal stroke. Is brake pedal stroke excessive? YES >> Perform asic Inspection. Refer to RC-21, "asic Inspection". NO >> GO TO 3. SR CHECK CONNECTOR ND RKING PERFORMNCE 1. Disable S by disconnecting S actuator and electric unit (control unit) connector. 2. Drive vehicle and check brake operation. NOTE: Stopping distance may be longer than vehicles without S when road condition is slippery. Driving the vehicle with the S actuator and electric unit (control unit) disconnected may induce DTCs in electrical control units using CN communication. fter the inspection, clear all DTCs. Refer to LN- 21, "CN COMMUNICTION". OK >> GO TO 4. NG >> Perform asic Inspection. Refer to RC-21, "asic Inspection". 4. CHECK WHEEL SENSORS Check the following. Wheel sensor mounting for looseness Wheel sensors for physical damage Wheel sensor connectors for terminal damage or loose connections OK >> Check S actuator and electric unit (control unit) connector terminals for deformation, disconnection, looseness or damage. Reconnect S actuator and electric unit (control unit) harness connector. Then retest. NG >> Repair or replace as necessary. RC-36