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 cruise control switch. Terminal 36 (CCS) of the ECM receives the voltage which varies according to the switch condition.

WIRING DIAGRAM

A0055ITE08

PROCEDURE


  1. READ VALUE USING GTS (CRUISE CONTROL SWITCH)


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

      Cruise Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Main SW S-CPU Cruise control switch (Sub CPU) / ON or OFF

      ON: Cruise control switch on

      OFF: Cruise control switch off

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

      ON: Cruise control switch on

      OFF: Cruise control switch 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
      On screen, each item changes between ON and OFF according to above chart.

    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.


    NG

    REPLACE CRUISE CONTROL SWITCH Click here

    OK

  3. INSPECT CRUISE CONTROL SWITCH WIRE

    A0055W7E02
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Spiral Cable)
    *b

    Front view of wire harness connector

    (to Cruise Control Switch)

    1. Disconnect the spiral cable connector.

    2. Disconnect the switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z5-3 (CCS) - z8-3 (CCS) Always Below 1 Ω
      z5-4 (ECC) - z8-1 (ECC)
      z5-3 (CCS) - Body ground Always 10 kΩ or higher
      z5-4 (ECC) - Body ground

    NG

    REPLACE CRUISE CONTROL SWITCH WIRE Click here

    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 D136 spiral cable connector.

    2. Disconnect the A67 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D136-1 (CCS) - A67-36 (CCS) Always Below 1 Ω
      D136-2 (ECC) - Body ground
      D136-1 (CCS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for 1ZR-FAE) A
      OK (for 2ZR-FAE) B
      OK (for 3ZR-FAE) C
      NG D

    A

    REPLACE ECM Click here

    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here

    D

    REPAIR OR REPLACE HARNESS OR CONNECTOR