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Test B: Charge Indicator Always On

  1. If diagnostic system check was not performed, perform ENGINE ELECTRICAL DIAGNOSTIC SYSTEM CHECK  under ON-VEHICLE TESTING. If diagnostic system check was performed, go to next step.
  2. Turn ignition switch to RUN position. If charge indicator illuminates, go to step  3 . If charge indicator does not illuminate, repair by symptom. See SYMPTOM INDEX  table.
  3. Turn ignition switch to OFF position. Disconnect 4-pin generator harness connector. Turn ignition switch to RUN position. If charge indicator illuminates, go to next step. If charge indicator does not illuminate, perform TEST A: CHARGING SYSTEM TEST  .
  4. Test Brown wire for short to ground. See WIRING DIAGRAMS  . If problem exists, repair as necessary. After repair, go to step  6 . If problem does not exist, go to next step.
  5. Replace PCM. See REMOVAL, OVERHAUL & INSTALLATION - TRUCKS article in ENGINE PERFORMANCE. Program PCM. After repair, go to next step.
  6. Operate system to verify repair. If system is not operating correctly, repeat test beginning at step  3 .
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