Alternator Indicator Test
- If VOLTS indicator does not come on with ignition switch in RUN position and engine off, go to step 4). If VOLTS indicator stays on at all times, check alternator pulley nut. If loose, tighten to 75 ft. lbs. (100 N.m). If nut is okay, go to next step.
- Disconnect alternator connector. Turn ignition switch to RUN position. If VOLTS indicator does not come on, replace alternator. If VOLTS indicator comes on, disconnect connector between IPC connector C1 (Brown wire) and alternator terminal "L". If indicator is now off, repair short to ground in Brown wire.
- If indicator remains on, remove IPC and disconnect IPC cluster connector C2. Measure resistance between IPC connector C2 and ground. If resistance is infinite, repair IPC. If resistance is less than infinite, repair short to ground in Brown wire.
- If VOLTS indicator does not come on with ignition switch in RUN position and engine off, disconnect alternator connector. Connect a fused jumper between alternator connector terminal "L" (Brown wire) and ground. Turn ignition on. If VOLTS indicator comes on, check for poor connection or replace alternator. If VOLTS indicator does not come on, go to next step.
- Disconnect connector between IPC connector C1 (Brown wire) and alternator terminal "L". Check for continuity between engine side of connector terminal "C" (Brown wire) and ground. If continuity is not present, repair open circuit in Brown wire.
- If continuity is present, backprobe fused jumper wire between IPC connector C1 terminal B6 (Brown wire) and ground. If VOLTS indicator is on, repair open circuit in Brown wire. If VOLTS indicator is not on, connect voltmeter between IPC connector C2 terminal A9 (Pink wire). If battery voltage is not present, repair open circuit in Pink wire. If wire is okay, repair voltage feed to instrument panel fuse No. 11. If battery voltage is present, check IPC connectors. If connectors are okay, check bulb. If bulb is okay, repair IPC.