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Troubleshooting assistant

Pick a problem area, choose the symptom, then follow the remedy links or step-by-step TSRM procedure.

Diagnostic codes
Searching in 1990 USDM TSRM.
Areas /Cruise control does not operate
Body Electrical System

Cruise control does not operate

Cruise control system troubleshooting from BE-64.

Possible causes and remedies
Possible cause
Type A or B code present
Remedy
Follow the code inspection chart. Use the linked inspection procedures based on the failed code.
Possible cause
All codes are normal
Remedy
Inspect power source, actuator and speed sensor circuits.
Possible cause
Inspection A: power source circuit
Remedy
Open the linked step-by-step cruise-control inspection.
Possible cause
Inspection B: set/coast switch circuit
Remedy
Open the linked step-by-step cruise-control inspection.
Possible cause
Inspection C: resume/accel switch circuit
Remedy
Open the linked step-by-step cruise-control inspection.
Possible cause
Inspection D: actuator circuit
Remedy
Open the linked step-by-step cruise-control inspection.
Possible cause
Inspection E: speed sensor circuit
Remedy
Open the linked step-by-step cruise-control inspection.
Possible cause
Inspection F: cancel switch circuit
Remedy
Open the linked step-by-step cruise-control inspection.
Possible cause
Inspection G: stop light switch circuit
Remedy
Open the linked step-by-step cruise-control inspection.
Possible cause
Inspection H: parking brake switch circuit
Remedy
Open the linked step-by-step cruise-control inspection.