Cruise Control (ECM/PCM) Input Test

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

2.Go to B-CAN System Diagnosis Test Mode A, and check for DTCs.

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

4.Turn the ignition switch ON (II).

5.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. 7 (15 A) fuse in the under-hood 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 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 Shift in D, 2, or 1 position SHIFT/CLUTCH SW should indicate OFF in P, R, and N position and ON in D, 2, and 1 position. 
  • 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 master switch signal Cruise control master switch ON and OFF CRUISE MASTER SW should indicate ON when the cruise control master switch ON and OFF when the cruise control master switch is OFF. 
  • Faulty cruise control SET/decel, RESUME/accel, CANCEL switch
  • An open in the wire between the gauge assembly and the cruise control SET/decel, RESUME/accel, CANCEL switch
  • A wire shorted to ground between the gauge assembly and the cruise control combination switch
  • An open in the wire between the cruise control SET/decel, RESUME/accel, CANCEL switch and the ground
 
Set button signal SET/decel button pressed and released CRUISE SET SW should indicate ON when the SET/decel button is pressed and OFF when the SET/decel button is released. 
  • Faulty cruise control SET/decel, RESUME/accel, CANCEL switch
  • An open in the wire between the gauge assembly and the cruise control SET/decel, RESUME/accel, CANCEL switch
  • A wire shorted to ground between the gauge assembly 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 button signal RESUME/accel button pressed and released CRUISE RESUME SW should indicate ON when the RESUME/accel button is pressed and OFF when the RESUME/accel button is released. 
  • Faulty cruise control SET/decel, RESUME/accel, CANCEL switch
  • An open in the wire between the gauge assembly and the cruise control SET/decel, RESUME/accel, CANCEL switch
  • A wire shorted to ground between the gauge assembly and the cruise control SET/decel, RESUME/accel, CANCEL 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 SET/decel, RESUME/accel, CANCEL switch
 
Cruise control indicator signal Start the engine, the cruise control master switch ON and drive the vehicle to speeds over 40 km/h (25 mph) with the cruise control set and cancel the cruise control CRUISE INDICATOR should indicate ON when the cruise control is set and OFF when the cruise control is canceled. 
  • Faulty gauge assembly
  • A burnt CRUISE CONTROL indicator