Alternator Indicator Test
- If VOLTS indicator does not come on with ignition switch in RUN position and engine off, go to next step. If VOLTS indicator stays on when engine is running, check alternator belt. If belt is okay, go to next step.
- Turn ignition off. Disconnect alternator connector and alternator battery ring terminal. Turn ignition switch to RUN position. Measure voltage between alternator connector terminal "F" (Pink/Black wire) and ground. If battery voltage is present, go to next step. If battery voltage is not present, check wiring, connectors, and fuses for opens or shorts.
- Measure voltage between alternator connector terminal "L" (Brown wire) and ground. Battery voltage (indicators cluster) or 3 volts (gauges cluster) should be present. If specified voltage is present, go to next step. If specified voltage is not present, check wiring for opens or short, check fuse, bulb and in-line connectors. If no problems are found, replace IPC. See INSTRUMENT PANEL CLUSTER (IPC) under REMOVAL & INSTALLATION.
- Measure voltage between alternator battery ring terminal and ground. If battery voltage is present, go to next step. If battery voltage is not present, check wiring for open or high resistance.
- Turn ignition off. Reconnect alternator connector and battery ring terminal. Start engine and idle at 1000-1500 RPM for at least 30 seconds. Measure voltage between alternator battery ring terminal and ground. If 16 or more volts are present, replace alternator. If less than 16 volts are present, repair or replace alternator.