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

Figure 1. for 1AR-FE

B003ZA4E72

Figure 2. for 2GR-FKS

B003ZA4E73

PROCEDURE


  1. READ VALUE ON GTS


    1. B00409OC01
      *a ON-OFF
      *b -SET
      *c +RES
      *d CANCEL

      Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Cruise Control*1 or Radar Cruise 1*2 / Data List.

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


      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 button) being pushed and held

      OFF: Cruise control main switch (ON-OFF button) released

      		 -
      Cancel Switch Switch CANCEL switch signal ON or OFF

      ON: CANCEL switch operated

      OFF: CANCEL switch released

      		 -
      SET/COAST Switch -SET switch signal ON or OFF

      ON: -SET switch operated

      OFF: -SET switch released

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

      ON: +RES switch operated

      OFF: +RES switch released

      		 -

      Powertrain > Cruise Control > Data List
      Tester Display
      Main SW M-CPU
      Cancel Switch
      SET/COAST Switch
      RES/ACC Switch

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

      ON: Cruise control main switch (ON-OFF button) pushed

      OFF: Cruise control main switch (ON-OFF button) not pushed

      		 -

      Powertrain > Radar Cruise1 > Data List
      Tester Display
      Cancel Switch
      -SET Switch
      +RES Switch
      Cruise Main Switch Operation Condition
      OK
      When the cruise control main switch is operated, the display changes as shown above.

      • *1: for 1AR-FE

      • *2: for 2GR-FKS

      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. 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. B00401OC13
      *a

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)
      *b

      Front view of wire harness connector

      (to Cruise Control Main Switch)

      Remove the cruise control switch wire.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z8-3 (CCS) - A-3 (CCS) Always Below 1 Ω
      z8-4 (ECC) - A-1 (ECC) Always Below 1 Ω
      z8-3 (CCS) or A-3 (CCS) - Body ground Always 10 kΩ or higher
      z8-4 (ECC) or A-1 (ECC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CRUISE CONTROL SWITCH WIRE

    OK

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. 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 F61 spiral cable sub-assembly.

    2. Disconnect the A43 ECM connector.

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

      Standard Resistance (for 1AR-FE)
      Tester Connection Condition Specified Condition
      F61-1 (CCS) - A43-40 (CCS) Always Below 1 Ω
      F61-2 (ECC) - Body ground Always Below 1 Ω
      F61-1 (CCS) or A43-40 (CCS) - Body ground Always 10 kΩ or higher
      Standard Resistance (for 2GR-FKS)
      Tester Connection Condition Specified Condition
      F61-1 (CCS) - A43-41 (CCS) Always Below 1 Ω
      F61-2 (ECC) - Body ground Always Below 1 Ω
      F61-1 (CCS) or A43-41 (CCS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK A
      NG B

    A

    REPLACE ECM for 1AR-FE: Click here
    REPLACE ECM for 2GR-FKS: Click here

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR