CRUISE CONTROL SYSTEM Cruise Control Switch Circuit

DESCRIPTION

This circuit sends a signal to the ECM depending on the cruise control switch condition. The battery supplies positive (+) battery voltage to the circuit control switch. Then terminal CCS of the ECM receives the voltage according to the switch condition.

WIRING DIAGRAM

A01KC4HE01

PROCEDURE


  1. READ VALUE USING GTS


    1. Check the Data List for proper functioning of the cruise control switch.

      Click here


      Powertrain > Cruise Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Main SW M-CPU Cruise control switch signal (Main CPU) ON or OFF

      ON: Cruise control switch is on

      OFF: Cruise control switch is off

      		 -
      Cancel Switch 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

      		 -

      Powertrain > Cruise Control > Data List
      Tester Display
      Main SW M-CPU
      Cancel Switch
      SET/COAST Switch
      RES/ACC Switch
      OK
      When the cruise control switch is operated, the display changes as shown above.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT CRUISE CONTROL SWITCH


    1. Remove the cruise control switch.

      Click here

    2. Inspect the cruise control switch.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CRUISE CONTROL SWITCH Click here

    OK

  3. CHECK CRUISE CONTROL SWITCH WIRE


    1. A01KD8UC04
      *a

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)
      *b

      Front view of wire harness connector

      (to Cruise Control Switch)

      Disconnect the z4 spiral cable sub-assembly connector.

    2. Disconnect the A cruise control switch wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z4-3 (CCS) - A-3 Always Below 1 Ω
      z4-4 (ECC) - A-1 Always Below 1 Ω
      z4-3 (CCS) or A-3 - Body ground Always 10 kΩ or higher
      z4-4 (ECC) or A-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CRUISE CONTROL SWITCH WIRE

    OK

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Remove the spiral cable sub-assembly.

      w/o Occupant Classification System: Click here

      w/ Occupant Classification System: Click here

    2. Inspect the spiral cable sub-assembly.

      w/o Occupant Classification System: Click here

      w/ Occupant Classification System: Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY w/o Occupant Classification System: Click here
    REPLACE SPIRAL CABLE SUB-ASSEMBLY w/ Occupant Classification System: Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM AND BODY GROUND)


    1. for 1AD-FTV, 2AD-FHV, 2AD-CCo, 2AD-DPF


      1. Disconnect the G8 spiral cable sub-assembly connector.

      2. Disconnect the A61 ECM connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-1 (CCS) - A61-23 (CCS) Always Below 1 Ω
        G8-2 (ECC) - Body ground Always Below 1 Ω
        G8-1 (CCS) or A61-23 (CCS) - Body ground Always 10 kΩ or higher

    2. for 2AR-FE


      1. Disconnect the G8 spiral cable sub-assembly connector.

      2. Disconnect the A62 ECM connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-1 (CCS) - A62-40 (CCS) Always Below 1 Ω
        G8-2 (ECC) - Body ground Always Below 1 Ω
        G8-1 (CCS) or A62-40 (CCS) - Body ground Always 10 kΩ or higher

    3. for 3ZR-FAE, 3ZR-FE


      1. Disconnect the G8 spiral cable sub-assembly connector.

      2. Disconnect the A62 ECM connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-1 (CCS) - A62-60 (CCS) Always Below 1 Ω
        G8-2 (ECC) - Body ground Always Below 1 Ω
        G8-1 (CCS) or A62-60 (CCS) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM for 1AD-FTV: Click here
    REPLACE ECM for 2AD-FHV: Click here
    REPLACE ECM for 2AD-CCo, 2AD-DPF: Click here
    REPLACE ECM for 2AR-FE: Click here
    REPLACE ECM for 3ZR-FAE: Click here
    REPLACE ECM for 3ZR-FE: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR