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Cruise Control Input Test

WARNING: This page is about a different car, the 2008 Acura TSX, 2007 Acura TSX, 2006 Acura TSX, 2005 Acura TSX, and 2004 Acura TSX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect the Honda Diagnostic System (HDS) to the data link connector (DLC) (see HOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM) ).
  2. Turn the ignition switch ON (II).
  3. '07-08 models: Make sure the HDS communicates with the vehicle and the engine control module (ECM)/ powertrain control module (PCM). If it doesn't communicate, troubleshoot the DLC circuit (see '07-08 MODELS ).
  4. Go to B-CAN System Diagnosis Test Mode A, and check for DTCs (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
  5. Go to PGM-FI, and check for DTCs (see PGM-FI SYSTEM ).
  6. Do the following tests while monitoring parameters in the PGM-FI DATA LIST with the HDS.
    NOTE: Intermittent failures are often caused by loose circuit connections. While monitoring cruise control inputs, flex their circuits, and note if any of the test results change.
    PGM-FI DATA LIST

    Signal to be tested Test condition Parameter: Desired result Possible cause if result is not obtained
    Brake pedal position switch signal Brake pedal pressed, then released CRUISE BRAKE 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/PCM and the brake pedal position switch
    • A wire shorted to ground between the ECM/PCM and the brake pedal position switch
    Clutch pedal position switch signal (M/T) 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
    Transmission range switch signal (A/T) Shift lever in D, M, or D3 position SHIFT/TRANS RANGE SW should indicate OFF in P, R, and N position and ON in D, M, and D3.
    • Faulty transmission range switch
    • An open in the wire between the PCM and the transmission range switch
    • A wire shorted to ground between the PCM and the transmission range switch
    • Poor ground G101
    Cruise control main switch signal Cruise control main switch ON and OFF CRUISE MASTER SW should indicate ON when the cruise control main switch is turned ON and OFF when the cruise control main switch 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 switch signal Set/decel switch pressed and released CRUISE SET SW should indicate ON when the set/decel switch is pressed and OFF when the set/decel switch 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 switch signal Resume/accel pressed and released CRUISE RESUME SW should indicate ON when the resume/accel is pressed and OFF when the resume/accel 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 switch signal Cancel switch pressed and released CRUISE CANCEL SW should indicate ON when the cancel switch is pressed and OFF when the cancel switch is released. Faulty cruise control combination switch
    Cruise control indicator signal Start the engine, turn the cruise control main switch on and drive the vehicle above 25 mph (40 km/h) 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
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