SPEED LIMITER SYSTEM Speed Limiter System does not Operate

DESCRIPTION

When the speed limiter main switch is turned on, the ECM illuminates the speed limiter indicator light and activates the speed limiter system. Each control of the speed limiter system can be activated by operating the cruise control switch. When the cruise control system is operating, the speed limiter system will not activate.

WIRING DIAGRAM

A01IS1OE01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CRUISE CONTROL SYSTEM


    1. Turn the ignition switch to ON.

    2. Turn the cruise control switch on.

    3. Check the operation of each function by operating the cruise control switch Click here.

      OK
      Each function of the cruise control system operates normally.

    NG

    GO TO CRUISE CONTROL SYSTEM Click here

    OK

  2. READ VALUE USING INTELLIGENT TESTER (SPEED LIMITER MAIN SWITCH)


    1. Use the Data List to check if the speed limiter main switch is functioning properly.

      Cruise Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ASL Main Switch Speed limiter main switch signal / ON or OFF

      ON: Speed limiter main switch on

      OFF: Speed limiter main switch off

      		 -
      OK
      On screen, item changes between ON and OFF according to above chart.

    NG

    INSPECT SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

  3. CHECK FOR DTC (CRUISE CONTROL SYSTEM)


    1. Check for DTCs Click here.

      OK
      DTCs P0500 and P0503 are not output.
      Result
      Result Proceed to
      OK (for 1ZR-FAE) A
      OK (for 2ZR-FAE) B
      OK (for 1AD-FTV) C
      OK (for 2AD-FHV) D
      NG E

    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here

    D

    REPLACE ECM Click here

    E

    GO TO CRUISE CONTROL SYSTEM Click here

    A

    REPLACE ECM Click here

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY

    A01IR9OE06

    1. If there are any defects as follows, replace the spiral cable with a new one: scratches, cracks, dents or chips on the connector or spiral cable.

    2. Check spiral cable.


      1. Set the spiral cable to the center position Click here.

      2. Rotate the spiral cable 2.5 times clockwise and measure the resistance according to the value(s) in the table below. Then rotate the spiral cable 5 times counterclockwise and measure the resistance according to the value(s) in the table below.

        Note

        As the spiral cable may break, do not rotate the spiral cable more than the specified amount.

        Standard Resistance
        Tester Connection Condition Specified Condition
        11 (ASL) - 4 (ASL) Always Below 1 Ω
        2 (ECC) - 6 (ECC)

      3. Set the spiral cable to the center position and rotate the spiral cable 2.5 times clockwise. Then, while rotating the spiral cable 5 times counterclockwise, measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        11 (ASL) - 4 (ASL) Always Below 1 Ω
        2 (ECC) - 6 (ECC)

    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

  5. INSPECT STEERING PAD SWITCH ASSEMBLY (SPEED LIMITER MAIN SWITCH)


    1. A01IUEDE01
      Text in Illustration
      *1 Speed Limiter Main Switch

      Remove the steering pad switch Click here.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      4 (ASL) - 6 (ECC) Speed limiter main switch on Below 2.5 Ω
      Speed limiter main switch off 1 MΩ or higher

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM AND BODY GROUND)

    A01IRMHE01
    Text in Illustration
    *1 for ZR Series Engine
    *2 for AD Series Engine
    *3

    Front view of wire harness connector

    (to Spiral Cable)
    *4

    Front view of wire harness connector

    (to ECM)

    1. Disconnect the H11 spiral cable connector.

    2. Disconnect the A51 ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      for ZR Series Engine
      Tester Connection Condition Specified Condition
      H11-11 (ASL) - A51-14 (ASLM) Always Below 1 Ω
      H11-2 (ECC) - Body ground
      H11-11 (ASL) - Body ground Always 10 kΩ or higher
      for AD Series Engine
      Tester Connection Condition Specified Condition
      H11-11 (ASL) - A51-24 (ASLM) Always Below 1 Ω
      H11-2 (ECC) - Body ground
      H11-11 (ASL) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for 1ZR-FAE) A
      OK (for 2ZR-FAE) B
      OK (for 1AD-FTV) C
      OK (for 2AD-FHV) D
      NG E

    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here

    D

    REPLACE ECM Click here

    E

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE ECM Click here