CRUISE CONTROL SYSTEM(for Diesel) Cruise Control Switch Circuit

DESCRIPTION

This circuit sends a signal to the ECM depending on the cruise control main switch condition. The battery supplies positive (+) battery voltage to the cruise control main switch. Terminal 44 (CCS) of the ECM receives the voltage which varies according to the switch condition.

WIRING DIAGRAM

B0045R9E02

PROCEDURE


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


    1. Using the GTS, read the Data List Click here.

      Cruise Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      -SET SW -SET switch signal / ON or OFF

      ON: -SET switch on

      OFF: -SET switch off

      		 -
      +RES SW +RES switch signal / ON or OFF

      ON: +RES switch on

      OFF: +RES switch off

      		 -
      Cruise Control Cancel Signal Cruise control cancel signal / ON or OFF

      ON: CANCEL switch on

      OFF: CANCEL switch off

      		 -
      Cruise Control Switch Cruise control switch signal / ON or OFF

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

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

      		 -
      OK
      The display is as specified in the normal condition column.

    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.


    NG

    REPLACE CRUISE CONTROL MAIN SWITCH Click here

    OK

  3. INSPECT CRUISE CONTROL SWITCH WIRE


    1. B00475DE01
      Text in Illustration
      *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.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z7-3 (CCS) - 3 (CCS) Always Below 1 Ω
      z7-4 (ECC) - 1 (ECC)

    NG

    REPLACE CRUISE CONTROL SWITCH WIRE

    OK

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. 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 F5 spiral cable sub-assembly connector.

    2. Disconnect the A108 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F5-1 (CCS) - A108-44 (CCS) Always Below 1 Ω
      F5-2 (ECC) - A108-59 (ECCS)
      F5-1 (CCS) - Body ground Always 10 kΩ or higher
      F5-2 (ECC) - Body ground

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR