LEMON Manuals: Even more car manuals for everyone
Home >> Oldsmobile >> 2000 >> Intrigue GL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1546: A/C Clutch Relay Control Circuit >> Diagnostic Procedures

Diagnostic Procedures

  1. Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK . After performing OBD system check, go to next step.
  2. Turn ignition on, with engine off. Using scan tool, command relay on and off. If relay turns on and off with each command, go to next step. If relay does not turn on and off with each command, go to step  5.
  3. Turn ignition off. Disconnect PCM harness connector. Turn ignition on. Using a DVOM in 10-amp scale, check current between ground and relay control circuit for 2 minutes. If current draw is within 0.10-0.75 amp, see DIAGNOSTIC AIDS . If current draw is not within 0.10-0.75 amp, go to next step.
  4. Turn ignition off. Disconnect relay. Check resistance between ground and relay control circuit in PCM harness connector. If resistance is infinite, go to step  11. If resistance is not infinite, go to step  9.
  5. Turn ignition off. Disconnect relay. Connect a test light between ignition feed circuit to relay coil and control circuit in relay harness connector. Turn ignition on. Using scan tool, command relay on and off. If test light turns on and off with each command, go to step  8. If test light does not turn on and off with each command, go to next step.
  6. Connect test light between ground and ignition feed circuit to relay coil in relay harness connector. If test light illuminates, go to next step. If test light does not illuminate, go to step  10.
  7. Turn ignition off. Reconnect relay. Disconnect PCM harness connector. Turn ignition on. Using a fuse jumper wire connected to ground, connect jumper wire to relay control circuit in PCM harness connector. If relay operates, go to step  12. If relay does not operate, go to step  9.
  8. Check for poor connection or terminal tension at relay harness connector. Repair as necessary. After repairs, go to step  14. If connection or terminal tension is okay, go to step  11.
  9. Repair relay control circuit. After repairs, go to step  14.
  10. Repair ignition feed circuit to relay coil. After relay, go to step  14.
  11. Replace relay. After replacing relay, go to step  14.
  12. Check for poor connection or terminal tension at PCM harness connector. Repair as necessary. After repairs, go to step  14. If connection or terminal tension is okay, go to next step.
  13. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to next step.
  14. Using scan tool, clear DTCs. Turn ignition off for 15 seconds. Operate vehicle within conditions required to set this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, go to step  2.
  15. Using scan tool, review CAPTURED INFO. If any DTCs are present, diagnose affected DTCs. If no DTCs are present, system is okay.
scientia non olet · About LEMON Manuals