СИСТЕМА КРУИЗ-КОНТРОЛЯ (для моделей с 1WW) Cruise Control Switch Circuit

DESCRIPTION

This circuit sends a signal to the driving support ECU depending on the cruise control switch condition. The battery supplies positive (+) battery voltage to the cruise control switch. Terminal 23 (CCS) of the driving support ECU receives the voltage which varies according to the switch condition.

WIRING DIAGRAM

A01IQFWE01

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING GTS (CRUISE CONTROL MAIN SWITCH)


    1. Use the Data List to check if the cruise control main switch is functioning properly Click here.

      Cruise Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Cruise Control Main Switch Cruise control main switch / ON or OFF

      ON: Cruise control main switch on

      OFF: Cruise control main switch off

      		 -
      Cruise Cancel Request CANCEL switch signal / ON or OFF

      ON: CANCEL switch on

      OFF: CANCEL switch off

      		 -
      SET/COAST Switch -SET switch signal / ON or OFF

      ON: -SET switch on

      OFF: -SET switch off

      		 -
      RES/ACC Switch +RES switch signal / ON or OFF

      ON: +RES switch on

      OFF: +RES switch off

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

    NG

    INSPECT SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  2. INSPECT SPIRAL CABLE SUB-ASSEMBLY

    A01IR9OE05

    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 the 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
        3 (CCS) - 1 (CCS) Always Below 1 Ω
        4 (ECC) - 2 (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
        3 (CCS) - 1 (CCS) Always Below 1 Ω
        4 (ECC) - 2 (ECC)

    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

  3. INSPECT CRUISE CONTROL SWITCH WIRE

    A01ITWNE33
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Spiral Cable)
    *b

    Front view of wire harness connector

    (to Cruise Control Min Switch)

    1. Disconnect the z12 spiral cable connector.

    2. Disconnect the z11 switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z12-3 (CCS) - z11-3 (CCS) Always Below 1 Ω
      z12-4 (ECC) - z11-1 (ECC)
      z12-3 (CCS) - Body ground Always 10 kΩ or higher
      z12-4 (ECC) - Body ground

    NG

    REPLACE CRUISE CONTROL SWITCH WIRE

    OK

  4. INSPECT CRUISE CONTROL MAIN SWITCH


    1. Remove the cruise control main switch Click here.

    2. Inspect the cruise control main switch Click here.


    NG

    REPLACE CRUISE CONTROL MAIN SWITCH Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - DRIVING SUPPORT ECU AND BODY GROUND)


    1. Disconnect the H11 spiral cable connector.

    2. Disconnect the H124 driving support ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H11-1 (CCS) - H124-23 (CCS) Always Below 1 Ω
      H11-2 (ECC) - Body ground
      H11-1 (CCS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

    REPLACE DRIVING SUPPORT ECU Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE DRIVING SUPPORT ECU Click here