CRUISE CONTROL SYSTEM Cruise Control Switch Circuit

DESCRIPTION

The cruise control main switch 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 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 points of the cruise control main switch turn on with switch operation. Then the ECM reads the voltage value that has been changed by the switch operation to control the SET, - (COAST), RES (RESUME), + (ACCEL), and CANCEL functions.

WIRING DIAGRAM

B00199HE03
B00197FE02
B001AG6E02

PROCEDURE


  1. READ VALUE USING GTS (CRUISE CONTROL MAIN SWITCH)


    1. Use the Data List to check if the cruise control main switch is functioning properly Click here.

      Cruise Control
      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: -/SET switch on

      OFF: -/SET switch off

      		 -
      +RES Switch +/RES switch status / ON or OFF

      ON: +/RES switch on

      OFF: +/RES switch off

      		 -
      Cruise Ready Main-CPU Cruise control system standby condition / ON or OFF Each time cruise control main switch (ON/OFF) is pushed, ON or OFF changes -
      Cruise Ready Sub-CPU Cruise control system standby condition / ON or OFF Each time cruise control main switch (ON/OFF) is pushed, ON or OFF changes -
      OK
      The Data List items shown in the table change according to the operation of the cruise control main switch.

    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.


    NG

    REPLACE CRUISE CONTROL MAIN SWITCH Click here

    OK

  3. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Remove the steering pad switch assembly Click here.

    2. Inspect the steering pad switch assembly Click here.


    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY 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.


    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 E102 spiral cable sub-assembly connector.

    2. for 3UR-FE:


      1. Disconnect the A38*1 or A87*2 ECM connector.


        • *1: for LHD

        • *2: for RHD

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

        Standard Resistance
        Tester Connection Condition Specified Condition

        E102-7 (CCS) - A38-60 (CCS)*1

        E102-7 (CCS) - A87-60 (CCS)*2

        		 Always Below 1 Ω

        E102-2 (ECC) - A38-59 (ECCS)*1

        E102-2 (ECC) - A87-59 (ECCS)*2

        E102-7 (CCS) or A38-60 (CCS)*1 - Body ground

        E102-7 (CCS) or A87-60 (CCS)*2 - Body ground

        		 Always 10 kΩ or higher

        E102-2 (ECC) or A38-59 (ECCS)*1 - Body ground

        E102-2 (ECC) or A87-59 (ECCS)*2 - Body ground

        • *1: for LHD

        • *2: for RHD

    3. for 1VD-FTV (w/ DPF):


      1. Disconnect the A85*1 or A86*2 ECM connector.


        • *1: for LHD

        • *2: for RHD

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

        Standard Resistance
        Tester Connection Condition Specified Condition

        E102-7 (CCS) - A85-40 (CCS)*1

        E102-7 (CCS) - A86-40 (CCS)*2

        		 Always Below 1 Ω
        E102-2 (ECC) - Body ground

        E102-7 (CCS) or A85-40 (CCS)*1 - Body ground

        E102-7 (CCS) or A86-40 (CCS)*2 - Body ground

        		 Always 10 kΩ or higher

        • *1: for LHD

        • *2: for RHD

    4. for 1VD-FTV (w/o DPF):


      1. Disconnect the A85 ECM connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        E102-7 (CCS) - A85-40 (CCS) Always Below 1 Ω
        E102-2 (ECC) - Body ground
        E102-7 (CCS) or A85-40 (CCS) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. for 3UR-FE:


      1. Disconnect the C53*1 or C54*2 ECM connector.


        • *1: for LHD

        • *2: for RHD

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

        Standard Resistance
        Tester Connection Condition Specified Condition

        C53-81 (E1) - Body ground*1

        C54-81 (E1) - Body ground*2

        		 Always Below 1 Ω

        • *1: for LHD

        • *2: for RHD

    2. for 1VD-FTV (w/ DPF):


      1. Disconnect the C110*1 or C138*2 ECM connector.


        • *1: for LHD

        • *2: for RHD

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

        Standard Resistance
        Tester Connection Condition Specified Condition

        C110-81 (E1) - Body ground*1

        C138-81 (E1) - Body ground*2

        		 Always Below 1 Ω

        • *1: for LHD

        • *2: for RHD

    3. for 1VD-FTV (w/o DPF):


      1. Disconnect the C110 ECM connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        C110-81 (E1) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      NG A
      OK (for 3UR-FE) B
      OK (for 1VD-FTV) C

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here