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Alternator Indicator Test

  1. If VOLTS indicator does not come on with ignition switch in RUN position and engine off, go to step 3). If VOLTS indicator stays on at all times, check generator pulley nut. If loose, tighten to 75 ft. lbs. (100 N.m). If nut is okay, go to next step.
  2. Disconnect generator connector. Turn ignition switch to RUN position. If VOLTS indicator does not come on, replace generator. If VOLTS indicator comes on, remove IPC and disconnect IPC connector C1. Measure resistance between IPC connector C1 terminal A7 (Brown wire) and ground. If resistance is infinite, repair IPC. If resistance is less than infinite, repair short in Brown wire.
  3. Disconnect generator connector. Connect a fused jumper between generator connector terminal "L" (Brown wire) and ground. Turn ignition switch to RUN position. If VOLTS indicator comes on, check for poor connection or replace generator. If VOLTS indicator does not come on, go to next step.
  4. Remove IPC. Connect test light between IPC connector C1 terminals A11 (Pink/Black wire) and A7 (Brown wire). See Figure . If test light comes on, check for poor connections or burned-out bulb. If connections and bulb are okay, repair IPC. If test light does not come on, go to next step.
  5. Connect test light between IPC connector C1 terminal A11 (Pink/Black wire) and ground. See Figure . If test light comes on, check for poor connections or open in Brown wire. If test light does not come on, check for open in Pink/Black wire or poor connections.
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