VEHICLE STABILITY CONTROL SYSTEM TEST MODE PROCEDURE


  1. WARNING LIGHT AND INDICATOR LIGHT INITIAL CHECK


    1. A0137TGE01

      Release the parking brake.

      Note

      Before releasing the parking brake, move the shift lever to the P position (for multi-mode manual transaxle model) or set chocks to hold the vehicle for safety purposes (for manual transaxle model).

      Tech Tips

      When the parking brake is applied or the level of the brake fluid is low, the brake warning light comes on.

    2. When the ignition switch is turned to ON, check that the ABS warning, brake warning, VSC warning and SLIP indicator lights come on for approximately 3 seconds.

      Tech Tips


      • If the skid control ECU stores any DTCs, the ABS warning, brake warning, VSC warning and SLIP indicator lights will come on.

      • If the indicator remains on or does not come on, proceed to troubleshooting for the light circuits listed below.

      Trouble Area See procedure
      ABS warning light circuit (Remains on)

      Click here

      ABS warning light circuit (Does not come on)

      Click here

      Brake warning light circuit (Remains on)

      Click here

      Brake warning light circuit (Does not come on)

      Click here

      VSC warning light circuit (Remains on)

      Click here

      VSC warning light circuit (Does not come on)

      Click here

      SLIP indicator light circuit (Remains on)

      Click here

      SLIP indicator light circuit (Does not come on)

      Click here

  2. SENSOR CHECK USING TEST MODE (SIGNAL CHECK) (Using an Intelligent Tester)

    Tech Tips

    If the ignition switch is turned from IG to ACC or OFF during Test Mode (signal check), DTCs recorded during the sensor check function will be erased.


    1. Procedure to enter Test Mode.


      1. Turn the ignition switch to OFF.

      2. Check that the steering wheel is in the straight-ahead position.

      3. Check that the shift lever is in the P position (for multi-mode manual transaxle model) or the parking brake is applied (for manual transaxle model).

      4. Connect the intelligent tester to the DLC3.

      5. Turn the ignition switch to ON.

      6. Turn the intelligent tester on.

      7. Switch the skid control ECU to Test Mode using the intelligent tester. Enter the following menus: Chassis / ABS/VSC/TRC / Signal Check.

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        Check that the ABS warning and VSC warning lights come on for several seconds and then blink in Test Mode.

        Tech Tips

        If the ABS warning and VSC warning lights do not blink, inspect the TS and CG terminal circuit and ABS warning and VSC warning light circuits.

        Trouble Area See procedure
        TS and CG terminal circuit

        Click here

        ABS warning light circuit (Remains on)

        Click here

        ABS warning light circuit (Does not come on)

        Click here

        VSC warning light circuit (Remains on)

        Click here

        VSC warning light circuit (Does not come on)

        Click here

      9. A0136TBE77

        Check the ABS sensor.

        Tech Tips

        Check that the ABS warning light is blinking in Test Mode and perform the check.

  3. SPEED SENSOR CHECK (Using an Intelligent Tester)


    1. Drive the vehicle straight-ahead.

      Accelerate the vehicle to a speed of 45 km/h (28 mph) or more for several seconds and check that the ABS warning light goes off.

      Tech Tips


      • The sensor check may not be completed if wheel spin occurs.

      • The ABS warning light goes off when the sensor check has been completed and the brake pedal is depressed.

      • The ABS warning light comes on immediately after a malfunction has been detected during the speed sensor check.

    2. Stop the vehicle.

      Note


      • The speed sensor check may not be completed if the speed sensor check is started while turning the steering wheel or spinning the wheels.

      • If the sensor check has not been completed, the ABS warning light will blink while driving and the ABS system will not operate.

      Tech Tips

      When the sensor check has been completed, the ABS warning light goes off while driving and blinks in the Test Mode pattern while stationary.

  4. END OF SENSOR CHECK (Using an Intelligent Tester)


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      If the sensor check is completed, the ABS warning light blinks (Test Mode) when the vehicle stops and the ABS warning light is off while the vehicle is driving.

      Note

      If the sensor check is not completed, the ABS warning light blinks even while the vehicle is driving and the ABS does not operate.

  5. READ DTC OF SENSOR CHECK FUNCTION (Using an Intelligent Tester)


    1. Read the DTC(s) by following the tester screen.

      Note


      • If only the DTCs are displayed, repair the malfunction area and clear the DTCs.

      • If the DTCs or Test Mode codes (DTC of sensor check function) are displayed, repair the malfunction area, clear the DTCs and perform Test Mode inspection.

      Tech Tips

      See the list of DTC (See procedure "A").

  6. SENSOR CHECK USING TEST MODE (SIGNAL CHECK) (Using an SST Check Wire)

    Tech Tips

    If the ignition switch is turned from ON to ACC or OFF during Test Mode (signal check), DTCs recorded during the sensor check will be erased.


    1. Procedure to enter Test Mode.


      1. Turn the ignition switch to OFF.

      2. Check that the steering wheel is in the straight-ahead position.

      3. Check that the shift lever is in the P position (for multi-mode manual transaxle model) or the parking brake is applied (for manual transaxle model).

      4. A0136XBE85

        Using SST, connect terminals TS and CG of the DLC3.

        SST
        09843-18040

      5. Turn the ignition switch to ON.

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        Check that the ABS warning and VSC warning lights come on for several seconds and then blink in Test Mode.

        Tech Tips

        If the ABS warning and VSC warning lights do not blink, inspect the TS and CG terminal circuit and ABS warning and VSC warning light circuits.

        Trouble Area See procedure
        TS and CG terminal circuit

        Click here

        ABS warning light circuit (Remains on)

        Click here

        ABS warning light circuit (Does not come on)

        Click here

        VSC warning light circuit (Remains on)

        Click here

        VSC warning light circuit (Does not come on)

        Click here

      7. A0136TBE77

        Check the ABS sensor.

        Tech Tips

        Check that the ABS warning light is blinking in Test Mode and perform the check.

  7. SPEED SENSOR CHECK (Using an SST Check Wire)


    1. Drive the vehicle straight-ahead.

      Accelerate the vehicle to a speed of 45 km/h (28 mph) or more for several seconds and check that the ABS warning light goes off.

      Tech Tips


      • The sensor check may not be completed if wheel spin occurs.

      • The ABS warning light goes off when the sensor check has been completed and the brake pedal is depressed.

      • The ABS warning light comes on immediately after a malfunction has been detected during the speed sensor check.

    2. Stop the vehicle.

      Note


      • The speed sensor check may not be completed if the speed sensor check is started while turning the steering wheel or spinning the wheels.

      • If the sensor check has not been completed, the ABS warning light will blink while driving and the ABS system will not operate.

      Tech Tips

      When the sensor check has been completed, the ABS warning light goes off while driving and blinks in the Test Mode pattern while stationary.

  8. END OF SENSOR CHECK (Using an SST Check Wire)


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      If the sensor check is completed, the ABS warning light blinks (Test Mode) when the vehicle stops and goes off while the vehicle is driving.

      Note

      If the sensor check is not completed, the ABS warning light blinks even while the vehicle is driving and the ABS does not operate.

  9. READ DTC OF SENSOR CHECK FUNCTION (Using an SST Check Wire)


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

      SST
      09843-18040

    2. Count the number of blinks of the ABS warning light.

      A013814E06

      Note


      • If only the DTCs are displayed, repair the malfunction area and clear the DTCs.

      • If the DTCs or Test Mode codes (DTC of sensor check function) are displayed, repair the malfunction area, clear the DTCs and perform Test Mode inspection.

      Tech Tips


      • If more than 1 malfunction is detected at the same time, the lowest numbered code will be displayed first.

      • See the list of DTCs (See procedure "A").

    3. After performing the check, disconnect SST from terminals TS and CG, and TC and CG of the DLC3, and turn the ignition switch to OFF.

    4. Turn the ignition switch to ON to cancel the Test Mode.

      Tech Tips


      • If the ignition switch is not turned to ON after SST is removed from the DLC3, the previous Test Mode will continue.

      • If the ignition switch is turned to ON with terminals TS and CG shorted, the previous Test Mode will continue.

  10. DTC OF SENSOR CHECK FUNCTION (Procedure "A")

    ABS Sensor:
    DTC Code Detection Item Trouble Area
    C1271/71 Low output signal of front speed sensor RH

    • Front speed sensor RH

    • Sensor installation

    • Speed sensor rotor
    C1272/72 Low output signal of front speed sensor LH

    • Front speed sensor LH

    • Sensor installation

    • Speed sensor rotor
    C1273/73 Low output signal of rear speed sensor RH

    • Rear speed sensor RH

    • Sensor installation

    • Speed sensor rotor
    C1274/74 Low output signal of rear speed sensor LH

    • Rear speed sensor LH

    • Sensor installation

    • Speed sensor rotor
    C1275/75 Abnormal change in output signal of front speed sensor RH Speed sensor rotor
    C1276/76 Abnormal change in output signal of front speed sensor LH Speed sensor rotor
    C1277/77 Abnormal change in output signal of rear speed sensor RH Speed sensor rotor
    C1278/78 Abnormal change in output signal of rear speed sensor LH Speed sensor rotor

    Tech Tips

    The codes in this table are output only in Test Mode (signal check).

  11. ENGINE VARIANT LEARNING


    1. Perform engine variant learning.

      Tech Tips


      • Engine variant learning is automatically performed immediately after the Test Mode is entered.

      • If the engine variant learning has not been completed, the ABS warning, brake warning, VSC warning and SLIP indicator lights come on for several seconds. Then, the engine variant learning starts automatically. When it is completed, those lights start blinking in the test mode pattern.

        When the engine variant learning has already been completed, those lights blink in the Test Mode pattern.