СИСТЕМА КРУИЗ-КОНТРОЛЯ ДВИГАТЕЛЯ (кроме моделей с 1WW) 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

A01IQK2E07

INSPECTION PROCEDURE

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 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.

    NG

    INSPECT SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

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

  2. INSPECT SPIRAL CABLE SUB-ASSEMBLY

    A01IR9OE05

    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 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

    A01ITWNE03
    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 z12 spiral cable connector.

    2. Disconnect the z11 switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z12-3 (CCS) - z11-3 (CCS) Always Below 1 Ω
      z12-4 (ECC) - z11-1 (ECC)
      z12-3 (CCS) - Body ground Always 10 kΩ or higher
      z12-4 (ECC) - Body ground

    NG

    REPLACE CRUISE CONTROL SWITCH WIRE

    OK

  4. INSPECT CRUISE CONTROL SWITCH


    1. Remove the cruise control switch Click here.

      A01IU7LE02

    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 2.5 Ω
      Cruise control switch off 1 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

    NG

    REPLACE CRUISE CONTROL SWITCH Click here

    OK

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


    1. A01ITGCE05
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Spiral Cable)
      *2

      Front view of wire harness connector

      (to ECM)

      Disconnect the H11 spiral cable connector.

    2. Disconnect the A76 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H11-1 (CCS) - A76-36 (CCS) Always Below 1 Ω
      H11-2 (ECC) - Body ground
      H11-1 (CCS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for 1ZR-FAE) A
      OK (for 2ZR-FAE) B
      NG C

    B

    REPLACE ECM Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE ECM Click here