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

A017EDEE02

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. A017CTGE05

      Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch on (IG).

    3. Turn the tester main switch on.

    4. Select the following menu items: Powertrain / Cruise Control / Data List.

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

      ECM (Cruise control):
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      CCS 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/COAST switch signal/ON or OFF

      ON: - (COAST)/SET switch on

      OFF: - (COAST)/SET switch off

      		 -
      RES/ACC Switch RES/ACC switch signal/ON or OFF

      ON: + (ACCEL)/RES (RESUME) switch on

      OFF: + (ACCEL)/RES (RESUME) 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 CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  2. INSPECT CRUISE CONTROL MAIN SWITCH


    1. Remove the cruise control main switch Click here.

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

      A017FJDE13
      Standard resistance
      Tester Connection Switch Condition Specified Condition
      A-3 (CCS) - A-1 (ECC) Neutral 10 kΩ or higher
      A-3 (CCS) - A-1 (ECC) + (ACCEL)/RES (RESUME) 235 to 245 Ω
      A-3 (CCS) - A-1 (ECC) - (COAST)/SET 617 to 643 Ω
      A-3 (CCS) - A-1 (ECC) CANCEL 1509 to 1571 Ω
      A-3 (CCS) - A-1 (ECC) Main switch on Below 2.5 Ω

    NG

    REPLACE CRUISE CONTROL MAIN SWITCH Click here

    OK

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


    1. A017BH8E24

      Disconnect the z1 connector from the spiral cable.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A-3 - z1-3 Always Below 1 Ω
      A-1 - z1-4 Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK SPIRAL CABLE

    Note

    The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the airbag from deploying. Be sure to read the page shown in the brackets.

    Tech Tips



    1. A017DHQE05

      Remove the spiral cable.

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

      Standard resistance
      Tester Connection Spiral Cable Position Specified Condition
      z1-3 (CCS) - D53-1 (CCS) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right
      z1-4 (ECC) - D53-2 (ECC) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right

      Tech Tips

      The spiral cable makes a maximum of approximately 5 rotations.


    NG

    REPLACE SPIRAL CABLE Click here

    OK

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


    1. A017CNSE02

      Disconnect the D32 connector from the ECM.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      D53-1 (CCS) - D32-2 (CCS) Always Below 1 Ω
      D32-2 (CCS) - Body ground Always 10 kΩ or higher
      D53-2 (ECC) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ECM (for 2GR-FE) Click here