CRUISE CONTROL SYSTEM Cruise Control Switch Circuit

DESCRIPTION

The cruise control main switch operates 7 functions: SET, - (COAST), TAP-DOWN, RES (RESUME), + (ACCEL), TAP-UP, and CANCEL. The SET, TAP-DOWN, and - (COAST) functions, and the RES (RESUME), TAP-UP, and + (ACCEL) functions are operated with the same switch. The cruise control main switch is an automatic return type switch which turns on only while operating it in the direction of each arrow and turns off after releasing it. The internal contact point of the cruise control main switch is turned on with the switch operation. Then the ECM reads the voltage value that has been changed by the switch operation to control SET, - (COAST), RES (RESUME), + (ACCEL), and CANCEL.

WIRING DIAGRAM

A019MEWE04

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. A019OQEE16
      Text in Illustration
      *1 ON/OFF
      *2 - SET
      *3 + RES
      *4 CANCEL

      Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Powertrain / Cruise Control / Data List.

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

      Cruise Control (ECM)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Main SW M-CPU Main switch signal (Main CPU) / ON or OFF

      ON: Main switch on

      OFF: Main 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
      When the cruise control main switch is operated, the display changes as shown above.
      Result
      Result Proceed to
      OK A
      NG (All items are defective) B
      NG (1 to 3 items are defective) C

    B

    INSPECT CRUISE CONTROL MAIN SWITCH Click here

    C

    REPLACE CRUISE CONTROL MAIN SWITCH Click here

    A

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

  2. INSPECT CRUISE CONTROL MAIN SWITCH


    1. Remove the cruise control main switch Click here.

      A019O9IE10
      Text in Illustration
      *1

      Component without harness connected

      (Cruise Control Main Switch)

      		 *2 Main Switch
      *3 Lever *4 ON/OFF
      *5 - SET *6 + RES
      *7 CANCEL - -

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A-1 (ECC) - A-3 (CCS) Main switch off 1 MΩ or higher
      Main switch on Below 2.5 Ω
      + RES 235 to 245 Ω
      - SET 617 to 643 Ω
      CANCEL 1509 to 1571 Ω

    3. Install the cruise control main switch Click here.


    NG

    REPLACE CRUISE CONTROL MAIN SWITCH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (CRUISE CONTROL MAIN SWITCH - SPIRAL CABLE SUB-ASSEMBLY)


    1. A019MSHE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)
      *2

      Front view of wire harness connector

      (to Cruise Control Main Switch)

      Disconnect the connector from the spiral cable sub-assembly.

    2. Disconnect the connector from the cruise control main switch.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-3 (CCS) - z9-3 (CCS) Always Below 1 Ω
      A-1 (ECC) - z9-4 (ECC) Always Below 1 Ω

    4. Reconnect the connector from the cruise control main switch.

    5. Reconnect the connector from the spiral cable sub-assembly.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK SPIRAL CABLE SUB-ASSEMBLY

    Note

    The spiral cable sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable sub-assembly may cause airbag deployment. Be sure to read the page shown in the brackets.

    Tech Tips



    1. Remove the spiral cable sub-assembly Click here.

      A019KUAE11
      Text in Illustration
      *1

      Component without harness connected

      (Spiral Cable Sub-assembly)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z9-3 (CCS) - F101-1 (CCS) The spiral cable sub-assembly position is center Below 1 Ω
      The spiral cable sub-assembly position is 2.5 rotations to the left
      The spiral cable sub-assembly position is 2.5 rotations to the right
      z9-4 (ECC) - F101-2 (ECC) The spiral cable sub-assembly position is center Below 1 Ω
      The spiral cable sub-assembly position is 2.5 rotations to the left
      The spiral cable sub-assembly position is 2.5 rotations to the right

      Tech Tips

      The spiral cable sub-assembly makes a maximum of approximately 5 rotations.

    3. Install 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 ECM connector.

    2. Disconnect the spiral cable sub-assembly connector.

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

      Standard Resistance
      for 2GR-FE
      Tester Connection Condition Specified Condition
      F101-1 (CCS) - A43-45 (CCS) Always Below 1 Ω
      A43-45 (CCS) - Body ground Always 10 kΩ or higher
      F101-2 (ECC) - Body ground Always Below 1 Ω
      for 1AR-FE
      Tester Connection Condition Specified Condition
      F101-1 (CCS) - A70-40 (CCS) Always Below 1 Ω
      A70-40 (CCS) - Body ground Always 10 kΩ or higher
      F101-2 (ECC) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      NG A
      OK (for 2GR-FE) B
      OK (for 1AR-FE) C

    4. Reconnect the spiral cable sub-assembly connector.

    5. Reconnect the ECM connector.


    B

    REPLACE ECM (for 2GR-FE) Click here

    C

    REPLACE ECM (for 1AR-FE) Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR