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Generator On-Vehicle Tests: Notes

CAUTION: To prevent damage to the generator, do not make jumper wire connections except as directed.
CAUTION: Do not allow any metal object to come in contact with the housing and the internal diode cooling fins with key ON or OFF. A short circuit may result and burn out the diodes.
NOTE: Battery posts and cable clamps must be clean and tight for accurate meter indications.
NOTE: Refer to the battery tester manual for complete directions for testing the charging system.
  1. Turn off all lamps and electrical components.
  2. Place the transmission in NEUTRAL and apply the parking brake.
  3. Carry out the Load Test and No-Load Test according to the following component tests:
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