CRUISE CONTROL SYSTEM(for 1ND-TV with Driving support ECU) Cruise Control Switch Circuit

DESCRIPTION

The cruise control 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 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 switch turn on with 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

A01TA23E01

PROCEDURE


  1. READ VALUE ON GTS


    1. A01TD6KC01
      *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 / Data List.

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


      Powertrain > Cruise Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Cruise Control Main Switch Cruise control switch signal OFF or ON

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

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

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

      ON: +/RES switch on

      OFF: +/RES switch off

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

      ON: -/SET switch on

      OFF: -/SET switch off

      		 -
      Cruise Cancel Request Status of the Cruise Cancel Request OFF or ON

      OFF: Cancel switch off

      ON: Cancel switch on

      		 -

      Powertrain > Cruise Control > Data List
      Tester Display
      Cruise Control Main Switch
      RES/ACC Switch
      SET/COAST Switch
      Cruise Cancel Request
      OK
      When the cruise control switch is operated, the display changes as shown above.
      Result
      Proceed to
      OK
      NG

    6. Turn the ignition switch off.


    OK

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

    NG

  2. INSPECT CRUISE CONTROL SWITCH


    1. Remove the cruise control switch.

      Click here

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

      A01TCCOC09
      *1 Cruise Control Switch (ON-OFF button) - -
      *a

      Component without harness connected

      (Cruise Control Switch)

      		 *b ON-OFF
      *c +/RES *d -/SET
      *e CANCEL - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 3 Cruise control switch (ON-OFF button) released 1 MΩ or higher
      Cruise control switch (ON-OFF button) pushed Below 2.5 Ω
      +/RES switch ON 235 to 245 Ω
      -/SET switch ON 617 to 643 Ω
      CANCEL switch ON 1509 to 1571 Ω

    3. Install the cruise control switch.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CRUISE CONTROL SWITCH Click here

    OK

  3. CHECK CRUISE CONTROL SWITCH WIRE


    1. A01TC9GC04
      *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 - z4-3 Below 1 Ω
      Cruise control switch side connector terminal 1 - z4-4 Below 1 Ω

    3. Install the cruise control switch wire.

      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.

      w/ VSC: Click here

      w/o VSC: Click here

      Result
      Result Proceed to
      OK A
      NG (w/ VSC) B
      NG (w/o VSC) C

    B

    REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY Click here

    C

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    A

  5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - DRIVING SUPPORT ECU ASSEMBLY)


    1. Disconnect the E128 driving support ECU assembly connector.

    2. Disconnect the E6 spiral cable sub-assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      E128-23 (CCS) - E6-1 (CCS) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      E128-23 (CCS) or E6-1 (CCS) - Body ground Always 10 kΩ or higher

    4. Reconnect the E6 spiral cable sub-assembly connector.

    5. Reconnect the E128 driving support ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - DRIVING SUPPORT ECU ASSEMBLY)

    OK

  6. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND)


    1. Disconnect the E6 spiral cable sub-assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      E6-2 (ECC) - Body ground Always Below 1 Ω

    3. Reconnect the E6 spiral cable sub-assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND)