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Home › Oldsmobile › 2000 › Intrigue GLS › Repair and Diagnosis › Accessories & Equipment › Cruise Control Systems › Trouble Shooting › Diagnostic Check

Diagnostic Check

NOTE: Diagnostic check determines if PCM is capable of controlling cruise control module. If diagnostic check fails, PCM, cruise control module or linkage may be at fault.
  1. Connect scan tool. Turn ignition on. Check for PCM Diagnostic Trouble Codes (DTCs). If any PCM DTCs are set, diagnose engine control system. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If no PCM DTCs are set, go to next step.
  2. Using scan tool, command PCM to enable cruise. Set parking brake and start engine. Turn cruise control off, and then on and wait at least 3 seconds. Push and hold SET/COAST switch. Hold cruise switch in RES/ACCEL position. Depress and hold brake pedal.
  3. After 10 seconds or more, release brake pedal while holding RES/ACCEL and SET/COAST switches. If engine RPM increases momentarily, and then returns to idle, go to SYSTEM CHECK  . If engine RPM does not increase, and then return to idle, go to next step.
  4. Check cruise control mechanical linkage for binding or disconnected components. Repair as necessary and return to step  1 . If no problems are found, go to SYSTEM CHECK  .
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