Test A: Warning Indicator On With Engine Running, System Is Not Charging
- Remove and inspect battery junction fuses No. 2 (40-amp) and No. 13 (15-amp), and central junction box fuse No. 12 (15-amp). Inspect Gray fusible links. Replace fuse(s) and/or fusible links as necessary. If okay, go to next step.
- Measure voltage of Black/Orange wire at generator B+ terminal (component side). If battery voltage is present, go to next step. If battery voltage is not present, repair open in Black/Orange wire between generator and battery junction box. See WIRING DIAGRAMS . Retest system operation.
- Disconnect generator 3-pin connector. Measure voltage of Yellow/White wire at generator connector terminal "A". If battery voltage is present, go to next step. If battery voltage is not present, repair open in Yellow/White wire between generator and battery junction box. See WIRING DIAGRAMS . Retest system operation.
- Turn ignition on. Measure voltage of Light Green/Red wire at generator terminal "I". If battery voltage is present, go to next step. If battery voltage is not present, repair open in Light Green/Red wire between generator and instrument panel. See WIRING DIAGRAMS . Retest system operation.
- Start engine. With engine running, turn headlights and rear defogger on, and turn blower motor to high speed. Increase engine speed to 2000 RPM. Measure voltage drop by connecting voltmeter positive lead to positive battery terminal and negative lead to generator terminal B+. If voltage drop is less than .5 volt, replace generator. See GENERATOR under REMOVAL & INSTALLATION. If voltage drop is greater than .5 volt, repair high resistance in Black/Orange wire between generator and battery junction box. See WIRING DIAGRAMS .