Cruise Control (ECM) Input Test

1.Connect the Honda Diagnostic System (HDS) to the data link connector (DLC).

2.Go to PGM-FI, and check for DTCs.

3.Turn the ignition switch ON (II).

4.Do the following tests while monitoring parameters in the PGM-FI DATA LIST with the HDS.

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 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. 4 (10 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 at G501
 
Cruise control main switch signal Cruise control main switch ON and OFF CRUISE CONTROL MAIN 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 main switch
  • Blown No. 4 (10 A) fuse in the under-dash fuse/relay box
  • An open in the wire between the ECU and the cruise control main switch
  • A wire shorted to ground between the ECU and the cruise control main switch
 
Set switch signal Set/decel switch pressed and released CRUISE CONTROL SET SW should indicate ON when the set/decel switch is pressed and OFF when the set/decel switch is released. 
  • Faulty cruise control set/decel, resume/accel, cancel switch
  • An open in the wire between the ECU and the cruise control set/decel, resume/accel, cancel switch
  • A wire shorted to ground between the ECU and the cruise control set/decel, resume/accel, cancel switch
 

Signal to be tested Test condition Parameter:
Desired result 
Possible cause if result is not obtained 
Resume switch signal Resume/accel switch pressed and released CRUISE CONTROL RESUME SW should indicate ON when the resume/accel switch is pressed and OFF when the resume/accel switch is released. 
  • Faulty cruise control set/decel, resume/accel, cancel switch
  • An open in the wire between the ECU and the cruise control set/decel, resume/accel, cancel switch
  • A wire shorted to ground between the ECU and the cruise control set/decel, resume/accel, cancel switch
 
Cancel switch signal Cancel switch pressed and released CRUISE CONTROL CANCEL SW should indicate ON when the cancel switch is pressed and OFF when the cancel switch is released. Faulty cruise control set/decel, resume/accel, cancel switch 
Cruise control indicator signal Start the engine, turn the cruise control main switch on and drive the vehicle over 40 km/h ( 25 mph) with the cruise control set and cancel the cruise control CRUISE SET INDICATOR should indicate ON when the cruise control is set and OFF when the cruise control is canceled. Faulty gauge control module