Cruise Control: Testing and Inspection

TROUBLESHOOTING HINTS:

Important:
^ The Set to get Cruise feature requires the operator to set the initial set speed by using the Set/Coast button before the Resume/Accel slider switch input will be recognized whenever, cruise is turned OFF or ignition switch is closed.

Important:
^ The Brake Before Cruise feature requires the cruise module to see terminal D change states, once each Ignition Cycle before allowing Cruise Control. (Some Cruise Modules will use either D or G.)

1. Check that Cruise Control Module Linkage is connected and moving freely.
2. Check Cruise Cable Adjustment.
^ Cruise won't function with Hazard Lights ON.
^ Make sure that CKT 17 and the stoplamps are working properly. If inoperative, Cruise Module will be disabled.
^ Cruise performance can be affected by trailer towing and steep grades.
^ Check for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove GOOD in a continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.










Cruise Control Will Not Engage




Cruise Control Will Not Resume, Accelerate Tap-Up Or Tap-Down