Charge Indicator On With Engine Running
- Check Fuse
- Remove and check fuse No. 14 (30-amp) located in power distribution box. If fuse is okay, go to next step. If fuse is blown, replace fuse and check system operation.
- Check Black/Orange Wire
- Measure voltage between Black/Orange wire at generator B+ terminal and ground. If battery voltage exists, go to next step. If battery voltage does not exist, repair open Black/Orange wire. Check system operation.
- Check Yellow/White Wire
- Disconnect 3-wire harness connector from rear or generator. Measure voltage between Yellow/White wire at 3-wire harness connector and ground. If battery voltage exists, go to next step. If battery voltage does not exist, repair open Yellow/White wire. Check system operation.
- Check Light Green/Red Wire
- Restore electrical connections. Turn ignition on. Check for voltage at Light Green/Red wire at generator 3-wire harness connector. If greater than one volt exists, go to next step. If one volt or less exists, repair open Light Green/Red wire. Check system operation.
- Check Generator Output
- Start engine. With engine running, ground terminal "F". See Fig 1. If generator output voltage increases or charging system indicator turns off, replace regulator. If generator output voltage does not increase or charging system indicator does not turn off, replace generator. Restore electrical connections and check system operation.
Courtesy of MAZDA MOTORS CORP.