CRUISE CONTROL SYSTEM Cruise Control Switch Circuit

DESCRIPTION

This circuit sends a signal to the ECM depending on the cruise control main switch condition. The battery supplies positive (+) battery voltage to the cruise control main switch. Terminal 23 (CCS)*1 or 40 (CCS)*2 of the ECM receives the voltage which varies according to the switch condition.


WIRING DIAGRAM

A003CC6E02

INSPECTION PROCEDURE

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
      Main SW M-CPU Cruise control main switch (Main CPU) / ON or OFF

      ON: Cruise control main switch (ON-OFF) on

      OFF: Cruise control main switch (ON-OFF) off

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

    NG

    INSPECT CRUISE CONTROL MAIN SWITCH Click here

    OK

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

  2. 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

  3. CHECK CRUISE CONTROL SWITCH WIRE


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

    2. A003EYIE32
      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)

      Disconnect the B cruise control main switch wire connector.

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

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

    NG

    REPLACE CRUISE CONTROL SWITCH WIRE

    OK

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY


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

    2. 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 - ECM AND BODY GROUND)


    1. Disconnect the H77 spiral cable sub-assembly connector.

    2. Disconnect the B72*1 or B71*2 ECM connector.


      • *1: for 1KD-FTV

      • *2: for 2TR-FE

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

      Standard Resistance
      for 1KD-FTV
      Tester Connection Condition Specified Condition
      H77-1 (CCS) - B72-23 (CCS) Always Below 1 Ω
      H77-2 (ECC) - Body ground
      H77-1 (CCS) or B72-23 (CCS) - Body ground Always 10 kΩ or higher
      for 2TR-FE
      Tester Connection Condition Specified Condition
      H77-1 (CCS) - B71-40 (CCS) Always Below 1 Ω
      H77-2 (ECC) - Body ground
      H77-1 (CCS) or B71-40 (CCS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for 1KD-FTV) A
      OK (for 2TR-FE) B
      NG C

    B

    REPLACE ECM Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE ECM Click here