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Battery Undercharged Or Overcharged

  1. Start engine. Check voltage at generator connector terminal L. If voltage is more than 8 volts, go to next step. If voltage is 8 volts or less, go to step 5).
  2. Check voltage at BAT terminal of generator (if accessible). If voltage is more than 8 volts, go to next step. If voltage is 8 volts or less, go to step 6).
  3. Start engine and run at fast idle. Ensure all accessories are off. Check battery voltage. If voltage is 13.3-15.5 volts, go to next step. If voltage is not 13.3-15.5 volts, go to step 7).
  4. Load check generator. Load test battery. Repair as needed. Recheck charging system. See CHARGING SYSTEM CHECK  under TROUBLE SHOOTING.
  5. Check for open or poor connections at generator connector terminal "L" and PCM connector C2 terminal No. 35 (Red wire). Repair as needed. Recheck charging system.
  6. Repair open circuit between battery and generator terminal BATT. Recheck charging system.
  7. Repair or replace generator. Recheck charging system.
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