DYNAMIC RADAR CRUISE CONTROL SYSTEM Cruise Control Switch Circuit

DESCRIPTION


WIRING DIAGRAM

B008JH8E17

CAUTION / NOTICE / HINT

Note


  • Before replacing the ECM, refer to Service Bulletin.

  • 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

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Radar Cruise 1 / Data List.

    5. for 8AR-FTS:

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

      Click here


      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 signal ON or OFF

      ON: -SET switch on

      OFF: -SET switch off

      		 -
      +RES Switch +RES switch signal ON or OFF

      ON: +RES switch on

      OFF: +RES switch off

      		 -
      Cruise Main Switch Operation Condition Cruise control main switch (ON/OFF) status ON or OFF

      ON: Cruise control main switch (ON/OFF) on

      OFF: Cruise control main switch (ON/OFF) off

      		 -

      Powertrain > Cruise Control > Data List
      Tester Display
      Cancel Switch
      -SET Switch
      +RES Switch
      Cruise Main Switch Operation Condition
      OK
      The Data List items shown in the table change according to the operation of the cruise control main switch.

    6. for 3ZR-FAE:

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

      Click here


      Powertrain > Radar Cruise1 > 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: -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 switch (ON/OFF button) is pushed, ON or OFF changes -

      Powertrain > Radar Cruise1 > Data List
      Tester Display
      Cancel Switch
      -SET Switch
      +RES Switch
      Cruise Ready Main-CPU
      OK
      The Data List items shown in the table change according to the operation of the cruise control main switch.
      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 STEERING PAD SWITCH ASSEMBLY


    1. Disconnect the z3 spiral with sensor cable sub-assembly connector.

    2. Disconnect the z12 cruise control switch wire connector.

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

      StAndArd ResistAnce
      Tester Connection Condition Specified Condition
      z3-12 (CCS) - z12-3 AlwAys Below 1 Ω
      z3-7 (ECC) - z12-1 AlwAys Below 1 Ω
      z3-12 (CCS) or z12-3 - Body ground AlwAys 10 kΩ or higher
      z3-7 (ECC) or z12-1 - Body ground AlwAys 10 kΩ or higher

    4. Connect the z12 cruise control switch wire connector.

    5. Connect the z3 spiral with sensor cable sub-assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  4. INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY


    1. Remove the spiral with sensor cable sub-assembly.

      Click here

    2. Inspect the spiral with sensor cable sub-assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY Click here

    OK

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


    1. Disconnect the I4 spiral with sensor cable sub-assembly connector.

    2. Disconnect the A35 ECM connector.

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

      Standard Resistance
      for 8AR-FTS
      Tester Connection Condition Specified Condition
      I4-7 (CCS) - A35-55 (CCS) Always Below 1 Ω
      I4-2 (ECC) - A35-41 (ECCS) Always Below 1 Ω
      I4-7 (CCS) or A35-55 (CCS) - Body ground Always 10 kΩ or higher
      I4-2 (ECC) or A35-41 (ECCS) - Body ground Always 10 kΩ or higher
      for 3ZR-FAE
      Tester Connection Condition Specified Condition
      I4-7 (CCS) - A35-36 (CCS) Always Below 1 Ω
      I4-2 (ECC) - A35-35 (ECCS) Always Below 1 Ω
      I4-7 (CCS) or A35-36 (CCS) - Body ground Always 10 kΩ or higher
      I4-2 (ECC) or A35-35 (ECCS) - Body ground Always 10 kΩ or higher

    4. Connect the A35 ECM connector.

    5. Connect the I4 spiral with sensor cable sub-assembly connector.

      Result
      Result Proceed to
      OK A
      NG B

    A

    REPLACE ECM for 8AR-FTS: Click here
    REPLACE ECM for 3ZR-FAE: Click here

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR