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Battery Undercharged Or Overcharged

  1. Ensure starter is okay. See STARTER article.
  2. Disconnect generator connector C2 (Blue/White wire). Turn ignition on. Check voltage at harness connector C2. If battery voltage exists, go to step 4). If battery voltage does not exist, go to next step.
  3. Locate and repair poor connection or open in circuit PM1 between instrument panel 26-pin connector terminal No. 18 and generator harness connector C2 terminal (Blue/White wire). Go to step 9).
  4. Disconnect generator connector C1 (Red wire). Check voltage at harness connector C1. If battery voltage exists, go to step 6). If battery voltage does not exist, go to next step.
  5. Locate and repair poor connection or open in circuit A100 or A400 (Red wire) between the battery, starter switch and generator. Go to step 9).
  6. Reconnect generator connector. Start engine and run at fast idle. Turn off accessories. Check voltage at battery terminals. If voltage is 12.5-14.5 volts, go to step 8). If voltage is not 12.5-14.5 volts, go to next step.
  7. Replace generator. Go to step 9).
  8. Load test generator. Replace generator as needed. If generator is okay, replace battery. Go to next step.
  9. Reconnect all connectors and recheck system. If system is not operating properly, go to step 1).
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