CRUISE CONTROL SYSTEM 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 hybrid vehicle control ECU assembly reads the voltage value that has been changed by the switch operation to control SET, - (COAST), RES (RESUME), + (ACCEL), and CANCEL functions.

WIRING DIAGRAM

A01KRSME09

PROCEDURE


  1. READ VALUE ON GTS


    1. A01KS2VC01
      *a ON-OFF
      *b -/SET
      *c +/RES
      *d CANCEL

      Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    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
      Main SW M-CPU Cruise control switch signal (Main-CPU) ON or OFF

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

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

      		 -
      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

      		 -

      Powertrain > Cruise Control > Data List
      Tester Display
      Main SW M-CPU
      Cancel Switch
      SET/COAST Switch
      RES/ACC Switch
      OK
      When the cruise control 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 SWITCH


    1. Remove the cruise control switch.

      Click here

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

      A01KS5HC01
      *1 Cruise Control Switch (ON-OFF button) - -
      *a

      Component without harness connected

      (Cruise Control Switch (Cruise Control Main 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
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CRUISE CONTROL SWITCH Click here

    OK

  3. CHECK CRUISE CONTROL SWITCH WIRE


    1. A01KT1FC02
      *a

      Front view of wire harness connector

      (to Spiral Cable with Sensor 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 Condition Specified Condition
      Cruise control switch side connector terminal 3 - z4-3 Always Below 1 Ω
      Cruise control switch side connector terminal 1 - z4-4 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CRUISE CONTROL SWITCH WIRE

    OK

  4. INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY


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

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY)


    1. Disconnect the E135 hybrid vehicle control ECU assembly connector.

    2. Disconnect the E6 spiral cable with sensor 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
      E135-28 (CCS) - E6-1 (CCS) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      E135-28 (CCS) or E6-1 (CCS) - Body ground Always 10 kΩ or higher

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

    5. Reconnect the E135 hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY for RHD: Click here

    NG

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