On-Board Diagnostic System Check: Notes

The on-board diagnostic system check is an organized approach in identifying a problem created by an electronic cruise control system malfunction. It must be the starting point for any cruise control electrical repair because it directs the service technician to the next logical step in diagnosing a complaint. Understanding the chart and using it correctly will reduce diagnostic time and prevent unnecessary replacement of good parts.

1. Checks CRUISE indicator light operation with ignition on.
2. Checks CRUISE indicator light and cruise operation and cruise on/off switch circuit.
3. Checks SET/COAST switch circuit.
4. Checks RES/ACC switch circuit.
5. Checks clutch pedal/transaxle in gear signal circuit.
6. Checks all cancel switch circuits.
7. Checks VSS signal input above 25 mph (40 km/h).
8. Checks throttle position sensor idle switch circuit.
9. Checks for an open or short to ground in Blue wire.
10. Checks for proper actuation of shift solenoid No. 2.
11. Checks for trouble codes
12. Checks for open in Brown/Yellow wire.
13. Checks for open or short to ground in Red wire.
14. Checks for faulty Cruise Control Module (CCM).