Cruise Control (ECM) Input Test

  1. Go to B-CAN System Diagnosis Test Mode A and check for DTCs.
  1. Go to PGM-FI and check for DTCs.
  1. Turn the ignition switch ON (II).
  1. Do the following tests while monitoring parameters in the PGM-FI DATA LIST.
    Signal to be tested
    Test condition
    Parameter: Desired result
    Possible cause if result is not obtained
    Brake switch signal
    Brake pedal pressed, then released
    CRUISE BRK SW should indicate OFF when the brake pedal is pressed and ON when the brake pedal is released.
    • Faulty brake pedal position switch
    • Blown No. 18 (15 A) fuse in the under-dash fuse/relay box
    • An open in the wire between the ECM and the brake pedal position switch
    • A wire shorted to ground between the ECM and the brake pedal position switch
    Clutch pedal position switch signal
    Clutch pedal pressed, then released
    SHIFT/CLUTCH SW should indicate OFF when the clutch pedal is pressed and ON when the clutch pedal is released.
    • Faulty clutch pedal position switch
    • An open in the wire between the ECM and the clutch pedal position switch
    • A wire shorted to ground between the ECM and the clutch pedal position switch
    • Poor ground G501
    Cruise control master button signal
    Cruise control master button ON and OFF
    CRUISE MAIN SW should indicated ON when the cruise control master button is turned ON and OFF when the cruise control master button is turned OFF.
    • Faulty cruise control combination switch
    • An open in the wire between the gauge control module and the cruise control combination switch
    • A wire shorted to ground between the gauge control module and the cruise control combination switch
    • An open in the wire between the cruise control combination switch and the ground
    Set button signal
    DECEL/SET button pressed and released
    CRUISE SET SW should indicate ON when the DECEL/SET button is pressed and OFF when the DECEL/SET button is released.
    • Faulty cruise control combination switch
    • An open in the wire between the gauge control module and the cruise control combination switch
    • A wire shorted to ground between the gauge control module and the cruise control combination switch
    Resume button signal
    RES/ACCEL button pressed and released
    CRUISE RESUME SW should indicate ON when the RES/ACCEL button is pressed and OFF when the RES/ACCEL button is released.
    • Faulty cruise control combination switch
    • An open in the wire between the gauge control module and the cruise control combination switch
    • A wire shorted to ground between the gauge control module and the cruise control combination switch
    Cancel button signal
    CANCEL button pressed and released
    CRUISE CANCEL SW should indicate ON when the CANCEL button is pressed and OFF when the CANCEL button is released.
    Faulty cruise control combination switch
    Cruise control indicator signal
    Start the engine, turn the cruise control master button on and drive the vehicle to speeds over 40 km/h (25 mph) with the cruise control set and cancel the cruise control
    CRUISE LIGHT should indicate ON when the cruise control is set and OFF when the cruise control is canceled.
    • Faulty gauge control module
    • A burnt CRUISE CONTROL indicator