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Abs With EBD & BA & TRAC & VSC System - Diagnosis: Pre-Check

  1. DIAGNOSIS SYSTEM 
    1. Check the warning lights and buzzer.
      1. Release parking brake pedal.
      2. When the ignition switch is turned ON, check that the ABS warning light, BRAKE warning light, VSC warning light, VSC OFF indicator light, SLIP indicator light and DAC indicator light goes on for approx. 3 seconds.
      3. When depressing the brake pedal repeatedly it may turn on the BRAKE warning light and buzzer.
        Fig 1: Identifying Warning Lights Symbols
        G04354751Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

    2. In case of not using hand-held tester:

      Check the DTC.

      1. Using SST, connect terminals TC and CG of DLC3.

        SST 09843--18040

      2. Turn the ignition switch ON.
      3. Read the DTC from the ABS warning light or VSC warning light on the combination meter.
        Fig 2: Identifying DLC3 Connector
        G04354752Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        • If no code appears, inspect the diagnostic circuit, ABS warning light circuit or VSC warning light circuit.
          DIAGNOSTIC TROUBLE CODE TABLE

          Trouble Area
          TC TERMINAL CIRCUIT 
          ABS WARNING LIGHT CIRCUIT 
          VSC WARNING LIGHT CIRCUIT 
          Fig 3: Identifying Blinking Pattern
          G04354753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • As an example, the blinking patterns for the normal code and codes 11 and 21 are shown in Fig 3 .
      4. Codes are explained in the CODE TABLE  .
      5. After completing the check, disconnect terminal TC and CG of DLC3, and turn off the ignition switch.

      If 2 or more malfunctions are detected at the same time, the lowest numbered DTC will be displayed 1st.

    3. In case of using the hand-held tester:

      Check the DTC.

      1. Hook up the hand-held tester to the DLC3.
      2. Turn the ignition switch ON.
      3. Read the DTC by following the prompts on the tester screen.

      HINT:

      Please refer to the hand-held tester operator's manual for further details.

      Fig 4: Depressing Brake Pedal
      G04354754Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. In case of not using hand-held tester:

      Clear the DTC.

      1. Using SST, connect the terminals TC and CG of the DLC3.

        SST 09843--18040

      2. Turn the ignition switch ON.
      3. Clear DTC stored in ECU by depressing the brake pedal 8 or more times within 5 sec.
      4. Check that the ABS warning light and VSC warning light shows the normal code.
      5. Remove the SST from the DLC3.

      SST 09843--18040

      HINT:

      Disconnect the battery cable during repairs will not erase the DTC in the ECU.

    5. In case of using hand-held tester:

      Clear the DTC.

      1. Turn the ignition switch ON.
      2. Operate the hand-held tester to erase the codes.

      HINT:

      Please refer to the hand-held tester operator's manual for further details.

  2. DATA LIST 

    HINT:

    According to the DATA LIST displayed by the hand-held tester, you can read the value of the switch, sense actuator and so on without parts removal. Reading the DATA LIST as a first step of troubleshooting is one of the method to shorten the labor time.

    1. Connect the hand-held tester to the DLC3.
    2. Turn the ignition switch ON.
    3. According to the display on tester, read the "DATA LIST".
      ITEM NORMAL CONDITION

      Item Measurement Item / Range (Display Normal Condition Diagnostic Note
      HB MOT RELAY HB motor relay / ON or OFF HB motor relay / ON or OFF -
      ABS MOT RELAY ABS motor relay / ON or OFF ABS motor relay / ON or OFF -
      SOL RELAY Solenoid relay / ON or OFF Solenoid relay / ON or OFF -
      PRESS HIGH HIGH hydraulic brake boost pressure / ON or OFF HIGH hydraulic brake boost pressure / ON or OFF -
      PRESS LOW LOW hydraulic brake boost pressure / ON or OFF LOW hydraulic brake boost pressure / ON or OFF -
      IDLE SW Main idle switch / ON or OFF ON : Accelerator pedal released
      OFF : Accelerator pedal depressed      		 -
      STOP LIGHT SW Stop light switch / ON or OFF ON : Brake pedal depressed
      OFF : Brake pedal released      		 -
      PKB SW Parking brake switch / ON or OFF ON : Parking brake applied
      OFF : Parking brake released      		 -
      ABS OPERT FR ABS operation (FR) / BEFORE or OPERATE BEFORE : No ABS operation (FR)
      OPERATE : During ABS operation (FR)      		 -
      ABS OPERT FL ABS operation (FL) / BEFORE or OPERATE BEFORE : No ABS operation (FL)
      OPERATE : During ABS operation (FL)      		 -
      ABS OPERT RR ABS operation (RR) / BEFORE or OPERATE BEFORE : No ABS operation (RR)
      OPERATE: During ABS operation (RR)      		 -
      ABS OPERT RL ABS operation (RL) / BEFORE or OPERATE BEFORE : No ABS operation (RL)
      OPERATE : During ABS operation (RL)      		 -
      WHEEL SPD FR Wheel speed sensor (FR) reading / min.: 0 km/h (0 MPH, max.: 326 km/h (202 MPH) Actual wheel speed Speed indicated on speedometer
      WHEEL SPD FL Wheel speed sensor (FL) reading / min.: 0 km/h (0 MPH, max.: 326 km/h (202 MPH) Actual wheel speed Speed indicated on speedometer
      WHEEL SPD RR Wheel speed sensor (RR) reading / min.: 0 km/h (0 MPH, max.: 326 km/h (202 MPH) Actual wheel speed Speed indicated on speedometer
      WHEEL SPD RL Wheel speed sensor (RL) reading / min.: 0 km/h (0 MPH, max.: 326 km/h (202 MPH) Actual wheel speed Speed indicated on speedometer
      DECELERATE SENS Deceleration sensor 1 reading / min.: -1.869 G, max.: 1.869 G Approximately 0 +/- 0.13G at still condition Reading changes when vehicle is bounced
      DECELERATE SENS2 Deceleration sensor 2 reading / min.: -1.869 G, max.: 1.869 G Approximately 0 +/- 0.13G at still condition Reading changes when vehicle is bounced
      IG VOLTAGE ECU power supply voltage / NORMAL or TOO LOW NORMAL : 9.5 V or over TOO LOW : Below 9.5 V -
      SFRR ABS solenoid (SFRR) / ON or OFF ABS solenoid (SFRR) / ON or OFF -
      SFRH ABS solenoid (SFRH) / ON or OFF ABS solenoid (SFRH) / ON or OFF -
      SFLR ABS solenoid (SFLR) / ON or OFF ABS solenoid (SFLR) / ON or OFF -
      SFLH ABS solenoid (SFLH) / ON or OFF ABS solenoid (SFLH) / ON or OFF -
      SRRR (SRR) ABS solenoid (SRRR (SRR)) / ON or OFF ABS solenoid (SRRR (SRR)) / ON or OFF -
      SRRH (SRH) ABS solenoid (SRRH (SRH)) / ON or OFF ABS solenoid (SRRH (SRH)) / ON or OFF -
      SRLR ABS solenoid (SRLR) / ON or OFF ABS solenoid (SRLR) / ON or OFF -
      SRLH ABS solenoid (SRLH) / ON or OFF ABS solenoid (SRLH) / ON or OFF -
      SRCF (SA1) TRAC solenoid (SRCF (SA1)) / ON or OFF TRAC solenoid (SRCF (SA1)) / ON or OFF -
      SRCR (SA2) TRAC solenoid (SRCR (SA2)) / ON or OFF TRAC solenoid (SRCR (SA2)) / ON or OFF -
      SRMF (SMCF, SA3) TRAC solenoid (SRMF (SMCF, SA3)) / ON or OFF TRAC solenoid (SRMF (SMCF, SA3)) / ON or OFF -
      SRMR (SMCR, STR) TRAC solenoid (SRMR (SMCR, STR)) / ON or OFF TRAC solenoid (SRMR (SMCR, STR)) / ON or OFF -
      THROTTLE Throttle position sensor reading / min.: 0 deg, max.: 125 deg - -
      ENGINE SPD Maximum revolution sensor reading / min.: 0 rpm, max.: 6000 rpm Actual vehicle speed Speed indicated on speedometer
      VEHICLE SPD Maximum wheel speed sensor reading / min.: 0 km/h (0 MPH), max.: 326 km/h (202 MPH) Actual vehicle speed Speed indicated on speedometer
      YAW RATE Yaw rate sensor reading / min.: -128 deg, max.: 127 deg - -
      YAW ZERO VALUE Yaw rate sensor reading / min.: -128 deg, max.: 127 deg - -
      STEERING ANG Steering angle sensor reading / min.: -1152 deg, max.: 1150.875 deg - -
      MAS CYL PRESS 1 Master cylinder pressure sensor 1 reading / min.: 0 V, max.: 5 V When brake pedal is released : 0.3 - 0.9 V Reading increases when brake pedal is depressed
      AIR BLD SUPPORT Air bleed support / SUPPORT or NOT SUP w / BA : Supported
      w / VSC : Not supported      		 -
      TEST MODE Test mode / NORMAL or TEST NORMAL : Normal mode
      TEST : During test mode      		 -
      #CODES Number of DTC recorded / min.: 0, max.: 255 Min.: 0, max.: 39 -
  3. ACTIVE TEST 

    HINT:

    Performing the ACTIVE TEST using the hand-held tester allows the relay, VSV, actuator and so on to operate without parts removal. Performing the ACTIVE TEST as a first step of troubleshooting is one of the method to shorten the labor time.

    It is possible to display the DATA LIST during the ACTIVE TEST.

    1. Connect the hand-held tester to the DLC3.
    2. Turn the ignition switch ON.
    3. According to the display on tester, perform the "ACTIVE TEST".

      HINT:

      IG must be turned ON to proceed Active Test using a hand-held tester.

      *1 : For VSC equipped vehicles only

      ITEM DIAGNOSTIC NOTE

      Item Vehicle Condition / Test Details Diagnostic Note
      SFRR Turns ABS solenoid (SFRR) ON / OFF Operation of solenoid (clicking sound) can be heard
      SFRH Turns ABS solenoid (SFRH) ON / OFF Operation of solenoid (clicking sound) can be heard
      SFLR Turns ABS solenoid (SFLR) ON / OFF Operation of solenoid (clicking sound) can be heard
      SFLH Turns ABS solenoid (SFLH) ON / OFF Operation of solenoid (clicking sound) can be heard
      SRRR Turns ABS solenoid (SRRR) ON / OFF Operation of solenoid (clicking sound) can be heard
      SRRH Turns ABS solenoid (SRRH) ON / OFF Operation of solenoid (clicking sound) can be heard
      SRLR Turns ABS solenoid (SRLR) ON / OFF Operation of solenoid (clicking sound) can be heard
      SRLH Turns ABS solenoid (SRLH) ON / OFF Operation of solenoid (clicking sound) can be heard
      SRCF (SA1) Turns TRAC solenoid SRCF (SA1) ON / OFF Operation of solenoid (clicking sound) can be heard
      SRCR (SA2) Turns TRAC solenoid SRCF (SA2) ON / OFF Operation of solenoid (clicking sound) can be heard
      SRMF (SMCF, SA3) Turns TRAC solenoid SRMF (SMCF, SA3) ON / OFF Operation of solenoid (clicking sound) can be heard
      SRMR (SMCR, STR) Turns TRAC solenoid SRMR (SMCR, STR) ON / OFF Operation of solenoid (clicking sound) can be heard
      SFLR & SFLH Turns ABS solenoid SFLR & SFLH ON / OFF Operation of solenoid (clicking sound) can be heard
      SRH & SRR Turns ABS solenoid SRH & SRR ON / OFF Operation of solenoid (clicking sound) can be heard
      SRLR & SRLH Turns ABS solenoid SRLR & SRLH ON / OFF Operation of solenoid (clicking sound) can be heard
      SFRH & SFLH Turns ABS solenoid SFRH & SFLH ON / OFF Operation of solenoid (clicking sound) can be heard
      SRCF & SRCR Turns ABS solenoid SRCF & SRCR ON / OFF Operation of solenoid (clicking sound) can be heard
      SRMF & SRMR Turns ABS solenoid SRMF & SRMR ON / OFF Operation of solenoid (clicking sound) can be heard
      SOL RELAY Turns ABS solenoid relay ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS MOT RELAY Turns ABS motor relay ON / OFF Operation of motor can be heard
      TRAC MOT RELAY Turns TRAC motor relay ON / OFF Operation of motor can be heard
      ABS WARN LIGHT Turns ABS warning light ON / OFF Observe combination meter
      VSC WARN LIGHT Turns VSC warning light ON / OFF Observe combination meter
      VSC / TRC OFF IND Turns VSC OFF indicator ON / OFF Observe combination meter
      SLIP INDI LIGHT Turns SLIP indicator light ON / OFF Observe combination meter
      BRAKE WRN LIGHT Turns BRAKE warning light ON / OFF Observe combination meter
      VSC / BR WARN BUZ Turns VSC / BRAKE warning buzzer ON / OFF Buzzer can be heard
      STP LIGHT RELAY Turns stop light relay ON / OFF Operation of motor can be hear
  4. FREEZE FRAME DATA 
    1. The vehicle (sensor) status memorized during ABS and/or VSC operation or at the time of error code detection can be displayed using the hand-held tester.
    2. Only one record of freeze frame data is stored and the freeze frame data generated during ABS and/or VSC operation are constantly updated. Also, the number of the ignition switch's "ON" after the freeze frame data is stored can be memorized up to 31 and it can be displayed.

      HINT:

      If the ignition switch "ON" operation exceeds 31 times, "31" appears on the display.

    3. If the diagnosis code abnormality occurs, the freeze frame data at the occurrence of the abnormality is stored but the ABS actuation data is deleted.
      FREEZE FRAME DATA

      Hand-held tester display Measurement Item Reference Value(1)
      VEHICLE SPD Wheel speed sensor reading Speed indicated on speedometer
      STOP LIGHT SW Stop light switch signal Stop light switch ON: ON, OFF: OFF
      # IG ON Number of operations of ignition switch ON after memorizing freeze frame data 0 - 31
      MAS CYL PRESS Master cylinder pressure sensor reading Brake pedal release : 0.3 - 0.9 V
      Brake pedal depress: 0.8 - 4.5 V
      MASS PRESS GRADE Master cylinder pressure sensor change -30 - 200 MPa/s
      SYSTEM System status ABS activated: ABS
      VSC/TRC activated: VSC/TRC
      BA activated: BA
      Fail safe mode activated: FAIL SF
      No system activated: NO SYS
      YAW RATE Yaw rate angle sensor reading -100 - 100
      STEERING ANG Steering sensor reading Left turn: Increase
      Right turn: Drop
      THROTTLE Throttle position sensor reading Release accelerator pedal: Approx. 0 deg.
      Depress accelerator pedal: Approx. 90 deg.
      G (RIGHT & LEFT) Right and left G -1.869 - 1.869
      G (BACK & FORTH) Back and forth G -1.869 - 1.869
      SHIFT POSITION Shift lever position FAIL
      P,N
      R
      D
      4
      3
      2
      L
      THROTTLE Throttle sensor reading 0 - 125 deg.
      (1) If no conditions are specifically stated for "Idling", it means the shift lever is at N or P position, the A/C switch is OFF and all accessory switches are OFF.
  5. In case of not using hand-held tester: 

    ABS SENSOR SIGNAL CHECK (TEST MODE) 

    NOTE: When having replaced the yaw rate sensor, deceleration sensor and/or ECU, perform zero point calibration of the yaw rate sensor and deceleration sensors (See step  9.).

    HINT:

    If the ignition switch is turned from ON to ACC or LOCK during test mode, DTC will be erased.

    1. Procedures for test mode:
      1. Turn the ignition switch OFF.
      2. Using SST, connect terminals TS and CG of DLC3. SST 09843--18040
      3. Check that the steering wheel is in the straight a head position and shift the shift lever to P range.
      4. Turn the ignition switch ON.
      5. Check that the ABS warning light blinks.
        Fig 5: Identifying DLC3 Connector Terminal
        G04354755Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      If the ABS warning light does not blinks, inspect the ABS warning light circuit or TS terminal circuit.

      DIAGNOSTIC TROUBLE CODE TABLE

      Trouble area
      TS TERMINAL CIRCUIT 
      ABS WARNING LIGHT CIRCUIT 
      Fig 6: Identifying Blinking Pattern
      G04354756Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the master cylinder pressure sensor.
      1. Leaving the vehicle in a stationary condition and the brake pedal in free condition for 1 sec. or more, continue to quickly depress the brake pedal with a force of 98 N (10 kgf, 22 lbf) or more for 1 sec. or more.

      HINT:

      At this time, the ABS warning light goes on for 3 sec.

    3. Check the center diff. lock detecting switch.
      1. Push the center diff. lock switch to ON to put the vehicle in the center diff. lock condition.
      2. Push the center diff. lock switch to OFF to put the vehicle in the center diff. free condition.
    4. Check the L4 detection switch.
      1. Turn the H-L lever to L position to put the vehicle in the L4 mode.
      2. Turn the H-L lever to H position to put the vehicle in the H4 mode.
    5. Check the speed sensor signal.
      1. Drive the vehicle in reverse more than 1 sec. at 3 km/h (2 mph) or higher.
      2. Drive the vehicle straight forward with the speed faster than 45 km/h (28 mph) for several seconds and check that the ABS warning light comes off.

      HINT:

      The sensor check may not be completed if the wheels spin or the steering wheels steered during this check.

    6. Stop the vehicle.
    7. Using SST, connect terminals TC and CG of DLC3.

      SST 09843--18040

    8. Read the number of blinks of the ABS warning light.
      Fig 7: Identifying DLC3 Connector Terminal
      G04354757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      • See the LIST OF DTC  .
      • If every sensor is normal, the normal code is output (A cycle of 0.25 sec. ON and 0.25 sec. OFF is repeated).
      • If 2 of more malfunctions are detected at the same time, the lowest numbered will be displayed 1st.
        Fig 8: Identifying Blinking Pattern
        G04354758Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. After doing the check, disconnect the SST from terminals TS and CG, TC and CG of DLC3 and turn the ignition switch OFF.

      SST 09843--19040

  6. In case of using hand-held tester: 

    ABS SENSOR SIGNAL CHECK (TEST MODE) 

    NOTE: When having replaced the yaw rate sensor, deceleration sensor and/or ECU, perform zero point calibration of the yaw rate sensor and deceleration sensors (See step  9.). Make sure that this operation should be done before starting the following.

    HINT:

    If the ignition switch is turned from ON to ACC or LOCK during test mode, DTC will be erased.

    1. Hook up the hand-held tester to the DLC3.
    2. Do step  5 - ( a) - ( 3) and from ( b) to ( d) .
    3. Read the DTC by following the prompts on the tester screen.

    HINT:

    Please refer to the hand-held tester operator's manual for further details.

  7. In case of not using hand-held tester: 

    VSC SENSOR SIGNAL CHECK (TEST MODE) 

    NOTE: When having replaced the yaw rate sensor, deceleration sensor and/or ECU, perform zero point calibration of the yaw rate sensor and deceleration sensors (See step  9.).

    HINT:

    If the ignition switch is turned from ON to ACC or LOCK during test mode, DTC will be erased.

    1. Procedures for test mode:
      1. Turn the ignition switch OFF.
      2. Check that the shift lever position is at P range. Turn the steering wheel to the straight-ahead position.
      3. Using SST, connect terminals TS and CG of DLC3. SST 09843--18040
      4. Start the engine.
        Fig 9: Identifying DLC3 Connector Terminal
        G04354759Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Check that the VSC warning light blinks.

        HINT:

        If the VSC warning light does not blinks, inspect the VSC warning light circuit or TS terminal circuit.

        DIAGNOSTIC TROUBLE CODE TABLE

        Trouble Area
        TS TERMINAL CIRCUIT 
        VSC WARNING LIGHT CIRCUIT 
      6. Keep the vehicle in a stationary on a level place for 1 sec. or more.
        Fig 10: Identifying Blinking Pattern
        G04354760Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the DAC operation switch.
      1. Push the DAC operation switch to ON.
      2. Push the DAC operation switch to OFF.
    3. Check the yaw rate sensor.
      1. Shift the shift lever to the D range and drive the vehicle at the vehicle speed of approx. 5 km/h (3 mph). Turn the steering wheel either to left or right for 90° or more, and maintain 180° circular drive for the vehicle.
      2. Stop the vehicle and shift the shift lever to the P range. Check that the skid control buzzer sounds for 3 sec.
        Fig 11: Checking Yaw Rate Sensor Working
        G04354761Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the skid control buzzer sounds, the sensor check is in normal completion.

      If the skid control buzzer dose not sound, check the skid control buzzer circuit, then do the sensor check again.

      DIAGNOSTIC TROUBLE CODE TABLE

      Trouble Area
      SKID CONTROL BUZZER CIRCUIT 

      If the skid control buzzer still does not sound, there is malfunction in the VSC sensor, so check the DTC.

      HINT:

      • Drive the vehicle circularly by 180°. At the end of the turn, the direction of the vehicle should be within 180° +/- 5° from its start position.
      • Do not spin the wheels.
    4. Read the DTC.
      1. Using SST, connect terminals TC and CG of DLC3. SST 09843--18040
      2. Read the number of blinks of the VSC warning light.

        HINT:

        • See the LIST OF DTC  .
        • If every sensor is normal, the normal code is output (A cycle of 0.25 sec. ON and 0.25 sec. OFF is repeated).
        • If 2 of more malfunctions are detected at the same time, the lowest numbered will be displayed 1st.
          Fig 12: Identifying DLC3 Connector Terminals
          G04354762Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
          Fig 13: Identifying Blinking Pattern
          G04354763Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. After doing the check, disconnect the SST from terminals TS and CG, TC and CG of DLC3 and turn the ignition switch OFF.

        SST 09843--18040

  8. In case of using hand-held tester: 

    VSC SENSOR SIGNAL CHECK (TEST MODE) 

    NOTE: When having replaced the yaw rate sensor, deceleration sensor and/or ECU, perform zero point calibration of the yaw rate sensor and deceleration sensors (See step  9). Make sure that this operation should be done before starting the following.

    HINT:

    If the ignition switch is turned from ON to ACC or LOCK during test mode. DTC will be erased.

    1. Hook up the hand-held tester to the DLC3.
    2. Do step 7-( a) - ( 5), ( b) and ( c) .
    3. Read the DTC by following the prompts on the tester screen.

    HINT:

    Please refer to the hand-held tester operator's manual for further details.

  9. IF NECESSARY, PERFORM ZERO POINT CALIBRATION OF YAW RATE AND DECELERATION SENSORS 

    HINT:

    • When having replaced the yaw rate sensor, deceleration sensor or the ECU, make sure to perform yaw rate and deceleration sensor's zero point calibration. Be sure to complete step  9 once it is started.
    • During step  9, a not-replaced sensor also requires zero point calibration.
      NOTE:
      • While obtaining the zero point, do not give any vibration to the vehicle by tilting, moving or shaking it and keep it in a stationary condition. (Do not start the engine.)
      • Be sure to do this on a level surface (within an inclination of 1%).
    1. Clear the zero points of the yaw rate and deceleration sensors.
      1. Shift the shift lever to P range.
      2. Turn the ignition switch ON in stationary condition.
        Fig 14: Identifying DLC3 Connector Terminals
        G04354764Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Using SST, repeat a cycle of short and open between terminals TS and CG of DLC3 4 times or more within 8 sec. Check that the VSC indicator light is lit indicating the recorded zero point is erased.

        SST 09843--18040

      4. Turn the ignition switch OFF.
    2. Obtain zero point of the yaw rate sensor.
      1. Make the terminals TS and CG of DLC3 disconnected.
      2. Turn the ignition switch ON.

        HINT:

        The vehicle should be in a stationary condition with the shift lever in P range.

      3. Check that the VSC warning light goes off about 15 sec. after the ignition switch is turned ON.

        HINT:

        Even if the ignition is not turned OFF in step (a) - (4) and remains ON, the yaw rate sensor zero point calibration can be completed. In this case, the VSC warning light is lit for about 15 sec. and then starts blinking. (Normal code)

      4. After ensuring that the VSC warning light remains OFF for 2 sec., turn the ignition switch OFF.

      HINT:

      If the ignition switch is not turned OFF in step (a) - (4), make sure that the VSC warning light blinks for 2 sec. Then turn the ignition switch OFF.

    3. Perform deceleration sensor zero point calibration.
      NOTE: After step (b) (the yaw rate sensor zero point calibration), the VSC warning light goes off. At this time, if the vehicle is driven without performing step (c) (deceleration sensor zero point calibration), deceleration sensor zero point calibration malfunction will be detected and the VSC warning light will light up. Therefore, perform step (c) right after step (b).
      1. Using SST, connect the terminal TS and CG of DLC3.

        SST 09843--18040

      2. Turn the ignition switch ON.

        HINT:

        Place the vehicle in a stationary condition with the shift lever in P range.

        Fig 15: Identifying DLC3 Connector Terminals
        G04354765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. After turning the ignition switch ON, check that the VSC warning light is lit for about 4 sec. and then starts quick blinking at 0.13 sec. intervals.
      4. After ensuring the blinking of the VSC warning light for 2 sec., turn the ignition switch OFF.
      5. Remove the SST and make the terminals TS and CG of DLC3 disconnected.

        SST 09843--18040

        Fig 16: Identifying Blinking Pattern
        G04354766Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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