CRUISE CONTROL SYSTEM Cruise Control Switch Circuit

DESCRIPTION

The cruise control main switch (ON-OFF button) is used to turn the cruise control system on and off, as well as operate 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 contains momentary type contacts for each function. The contacts close only while the cruise control main switch is being operated in the direction of the relative function arrow, and open when the cruise control main switch is released. The voltage at the terminal of the ECM changes as each of the different contacts open or close. The ECM reads this voltage and controls the SET, - (COAST), RES (RESUME), + (ACCEL), and CANCEL functions accordingly.

WIRING DIAGRAM

B001DBOE01

CAUTION / NOTICE / HINT

Note


  • The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.

    Click here

  • Before replacing the ECM refer to Service Bulletin.

PROCEDURE


  1. READ VALUE ON GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch ON.

    3. Turn the GTS on.

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

    5. for 1GR-FE (for Manual Transmission):

      Read the Data List according to the display on the GTS.

      Powertrain > Cruise Control > Data List

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

      ON: Cruise control main switch on

      OFF: Cruise control 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

      		 -

    6. except 1GR-FE (for Manual Transmission):

      Read the Data List according to the display on the GTS.

      Powertrain > Cruise Control > Data List

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Cancel Switch CANCEL switch status ON or OFF

      ON: CANCEL switch on

      OFF: CANCEL switch off

      		 -
      -SET Switch -SET switch status ON or OFF

      ON: CANCEL switch on

      OFF: CANCEL switch off

      		 -
      +RES Switch +RES switch status ON or OFF

      ON: -SET switch on

      OFF: -SET switch off

      		 -
      Cruise Ready Main-CPU Cruise control system standby condition ON or OFF Each time cruise control main switch is pushed, ON or OFF changes -
      OK
      When the cruise control main switch is operated, the display changes as shown above.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT CRUISE CONTROL MAIN SWITCH


    1. Remove the cruise control main switch.

      Click here

    2. Inspect the cruise control main switch.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CRUISE CONTROL MAIN SWITCH Click here

    OK

  3. CHECK CRUISE CONTROL SWITCH WIRE


    1. B001DF4C86
      *a

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)
      *b

      Front view of wire harness connector

      (to Cruise Control Switch)

      Remove the cruise control switch wire.

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

      Standard Resistance (Check for Open)
      Tester Connection Specified Condition
      Cruise control switch side connector terminal 3 - z7-3 Below 1 Ω
      Cruise control switch side connector terminal 1 - z7-4 Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CRUISE CONTROL SWITCH WIRE Click here

    OK

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Remove the spiral cable sub-assembly.

      Click here

    2. Inspect the spiral cable sub-assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    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 G208 spiral cable sub-assembly connector.

    2. Disconnect the G56*1, G57*2, G181*3 or G185*4 ECM connector.


      • *1: for 1GR-FE

      • *2: for 1KD-FTV

      • *3: for 2TR-FE

      • *4: for 1GD-FTV

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

      Standard Resistance (for 1GR-FE, Automatic Transmission)
      Tester Connection Condition Specified Condition
      G208-1 (CCS) - G56-1 (CCS) Always Below 1 Ω
      G208-2 (ECC) - Body ground Always Below 1 Ω
      G208-1 (CCS) or G56-1 (CCS) - Body ground Always 10 kΩ or higher
      Standard Resistance (for 1GR-FE, Manual Transmission)
      Tester Connection Condition Specified Condition
      G208-1 (CCS) - G56-11 (CCS) Always Below 1 Ω
      G208-2 (ECC) - Body ground Always Below 1 Ω
      G208-1 (CCS) or G56-11 (CCS) - Body ground Always 10 kΩ or higher
      Standard Resistance (for 1KD-FTV)
      Tester Connection Condition Specified Condition
      G208-1 (CCS) - G57-14 (CCS) Always Below 1 Ω
      G208-2 (ECC) - Body ground Always Below 1 Ω
      G208-1 (CCS) or G57-14 (CCS) - Body ground Always 10 kΩ or higher
      Standard Resistance (for 2TR-FE)
      Tester Connection Condition Specified Condition
      G208-1 (CCS) - G181-22 (CCS) Always Below 1 Ω
      G208-2 (ECC) - G181-21 (ECCS) Always Below 1 Ω
      G208-1 (CCS) or G181-22 (CCS) - Body ground Always 10 kΩ or higher
      Standard Resistance (for 1GD-FTV)
      Tester Connection Condition Specified Condition
      G208-1 (CCS) - G185-26 (CCS) Always Below 1 Ω
      G208-2 (ECC) - Body ground Always Below 1 Ω
      G208-1 (CCS) or G185-26 (CCS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (except 2TR-FE) A
      OK (for 2TR-FE) B
      NG C

    A

    REPLACE ECM for 1GR-FE: Click here
    REPLACE ECM for 1KD-FTV: Click here
    REPLACE ECM for 1GD-FTV: Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

  6. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)


    1. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C153-3 (E1) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR