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 40 (CCS) of the ECM receives the voltage which varies according to the switch condition.

WIRING DIAGRAM

A0054YYE01

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (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 SPIRAL CABLE SUB-ASSEMBLY

    A0058BAE16
    Text in Illustration
    *1

    Component without harness connected

    (Spiral Cable)

    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 the 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

    A0052JNE02
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Spiral Cable)
    *2

    Front view of wire harness connector

    (to Cruise Control Switch)

    1. Disconnect the z5 spiral cable connector.

    2. Disconnect the z8 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 CRUISE CONTROL SWITCH

    A0052QYE22

    1. Remove the cruise control switch Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      3 (CCS) - 1 (ECC) Cruise control switch on Below 1.5 Ω
      Cruise control switch off 10 MΩ or higher
      +RES switch held on 235 to 245 Ω
      +SET switch held on 617 to 643 Ω
      CANCEL switch held on 1509 to 1571 Ω
      Text in Illustration
      *1

      Component without harness connected

      (Cruise Control Switch)

    NG

    REPLACE CRUISE CONTROL SWITCH Click here

    OK

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


    1. A00529YE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Spiral Cable)
      *2

      Front view of wire harness connector

      (to ECM)

      Disconnect the D5 spiral cable connector.

    2. Disconnect the A40 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D5-1 (CCS) - A40-40 (CCS) Always Below 1 Ω
      D5-2 (ECC) - Body ground
      D5-1 (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