CRUISE CONTROL SYSTEM(except 1WW) Cruise Control Switch Circuit

DTC Code DTC Name
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

C329921E07

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.

      Table 1. 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.

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

  2. INSPECT SPIRAL CABLE SUB-ASSEMBLY

    1. Remove the spiral cable with sensor sub-assembly (Click here).

    2. Inspect the spiral cable with sensor sub-assembly (Click here).

    REPLACE SPIRAL CABLE SUB-ASSEMBLY

    (Click here)

  3. INSPECT CRUISE CONTROL SWITCH WIRE

    U123758E01

    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
      Table 2. Text in Illustration

      *1

      Front view of wire harness connector

      (to Spiral Cable)

      *2

      Front view of wire harness connector

      (to Cruise Control Switch)

    REPLACE CRUISE CONTROL SWITCH WIRE

  4. INSPECT CRUISE CONTROL SWITCH

    1. Remove the cruise control switch (Click here).

      B215369E17

    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

    REPLACE CRUISE CONTROL SWITCH

    (Click here)

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

    1. Disconnect the H130 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

      H130-1 (CCS) - A76-36 (CCS)

      Always

      Below 1 Ω

      H130-2 (ECC) - Body ground

      H130-1 (CCS) - Body ground

      Always

      10 kΩ or higher
      Table 3. Result

      Result

      Proceed to

      OK (for 1ZR-FAE)

      A

      OK (for 2ZR-FAE)

      B

      NG

      C

    REPLACE ECM

    (Click here)

    REPLACE ECM

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR