FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Checking Speed Control Operation With No DTC's Present

Tests 711 - 716:




Tests 717 - 722:




Tests 723 - 727:




Tests 728 - 732:




Tests 733 - 737:




Tests 738 - 743:




Tests 744 - 749:




Tests 750 - 753:





SYMPTOM
CHECKING SPEED CONTROL OPERATION WITH NO DTC'S PRESENT

POSSIBLE CAUSES
- Speed control
- Ground circuit at Speed control servo connector open
- Ground circuit to Speed control RESUME/ACCEL switch connector open
- S/C switch signal circuit to clockspring connector open
- Speed control switch ground circuit open clockspring to Speed control switch
- Speed control switch ground circuit open PCM to clockspring
- Clockspring defective
- DRB does not show set switch "PRESSED" or released
- S/C wiring harness observable defect
- CANCEL switch defective
- COAST switch defective
- Throttle cable observable defect
- Throttle opens and closes
- Speed control switch defective (ON/OFF)
- Speed control switch defective (RESUME/ACCEL)
- Speed control ON/OFF switch defective
- Speed control ON/OFF switch stuck
- Speed control RESUME/ACCEL switch defective
- Speed control RESUME/ACCEL switch stuck
- Speed control signal circuit shorted to sensor ground
- Speed control switch signal circuit shorted to ground
- Speed control switch signal circuit open PCM to clock spring
- Speed control switch signal circuit open clockspring to Speed control switch
- Speed control switch signal circuit shorted to voltage
- PCM defective
- Powertrain control module defective