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Generator Circuit Diagnosis (2.2L)

  1. Perform powertrain diagnostic system check. See POWERTRAIN DIAGNOSTIC SYSTEM CHECK in appropriate SELF-DIAGNOSTICS article. After performing powertrain diagnostic system check, go to next step.
  2. Turn ignition on with engine off. If charging system light illuminates, go to next step. If charging system light does not illuminate, go to step  4.
  3. Start engine. If charging system light goes out, go to step  17. If charging system light remains illuminated, go to step  5.
  4. Turn ignition off. Disconnect generator connector. Turn ignition on with ignition off. If charging system light illuminates, go to step  6. If charging system light does not illuminate, go to step  7.
  5. Turn all accessories off. Install scan tool. If voltage is greater than 12 volts, go to step  7. If voltage is 12 volts or less, go to step  8.
  6. With test light connected to ground, probe light driver output circuit at generator connector. See WIRING DIAGRAMS article. If test light illuminates, go to step  9. If test light does not illuminate, go to step  10.
  7. Replace instrument cluster. After repairs, go to step  17.
  8. Turn ignition off. Disconnect generator connector. Turn ignition on with engine off. Using a test light connected to ground, probe light driver output circuit at generator connector. See WIRING DIAGRAMS article. If test light illuminates, go to step  11. If test light does not illuminate, go to step  12.
  9. Repair short to voltage in light driver output circuit. After repairs, go to step  17.
  10. Replace generator. After repairs, go to step  17.
  11. Repair short to ground in light driver output circuit. After repairs, go to step  17.
  12. Using DVOM connected to ground, probe light driver output circuit at generator connector. See WIRING DIAGRAMS article. If voltage is greater than 4.5 volts, go to next step. If voltage is 4.5 volts or less, go to step  14.
  13. Using DVOM connected to ground, probe battery circuit at generator connector. See WIRING DIAGRAMS article. If battery voltage exists, go to step  10. If battery voltage does not exist, go to step  15.
  14. Check for poor connection or open in light driver output circuit. If problem exists, repair as necessary and go to step  17. If problem does not exist, go to step  16.
  15. Check for poor connection or open in battery circuit. Repair as necessary. After repairs, go to step  17.
  16. Replace PCM and reprogram. Perform VTD password relearn procedure and perform crankshaft variation learn procedure. See COMPUTER RELEARN PROCEDURES in GENERAL INFORMATION article. After repairs, go to next step.
  17. Start engine and operate vehicle under condition under which original symptom was noted. If system does not operate properly, go to step  2. If system operates properly, check for poor connection at PCM, backed-out terminals, broken locks, improperly formed or damaged terminals, or poor terminal-to-wire connection.
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