CRUISE CONTROL SYSTEM(for Diesel) Cruise Control Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01VEW0E08

PROCEDURE


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


    1. Using the GTS, read the Data List Click here.

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

      OFF: Cruise control main switch off

      ON: Cruise control main switch on

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

      OFF: +RES switch off

      ON: +RES switch on

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

      OFF: -SET switch off

      ON: -SET switch on

      		 -
      Cruise Cancel Request Status of the Cruise Cancel Request / OFF or ON

      OFF: Cancel switch off

      ON: Cancel switch on

      		 -
      OK
      The display is as specified in the normal condition column.

    OK

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

    NG

  2. INSPECT CRUISE CONTROL MAIN SWITCH


    1. Inspect the cruise control main switch Click here.


    NG

    REPLACE CRUISE CONTROL MAIN SWITCH Click here

    OK

  3. INSPECT CRUISE CONTROL SWITCH WIRE


    1. A01VDW4E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)
      *b

      Front view of wire harness connector

      (to Cruise Control Main Switch)

      Remove the cruise control switch wire.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z7-3 (CCS) - 3 (CCS) Always Below 1 Ω
      z7-4 (ECC) - 1 (ECC)

    NG

    REPLACE CRUISE CONTROL SWITCH WIRE

    OK

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Inspect the spiral cable sub-assembly Click here.


    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

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


    1. Disconnect the F5 spiral cable sub-assembly connector.

    2. Disconnect the F121 driving support ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F5-1 (CCS) - F121-23 (CCS) Always Below 1 Ω
      F5-2 (ECC) - Body ground
      F5-1 (CCS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR