## Charging System

#### Charging Circuit Troubleshooting (cont'd)

4-30

Alternator Control System Test (KU, KT, KX, KK models)

1. Check for proper operation of the ELD by checking the MIL 4-door (see page 11-3) or 5-door (see page 11-309).
2. Disconnect the alternator 4P connector from the alternator.
3. Start the engine, and turn the headlights (high beam) ON.
4. Measure voltage between the alternator 4P connector terminal No. 2 and the positive terminal of the battery.

BATTERY

ALTERNATOR 4P CONNECTOR

Wire side of female terminals

Is there 1 V or less?

YES - Go to step 8.

NO - Go to step 5.

5. Turn the headlight and ignition switch OFF.
6. Disconnect ECM/PCM connector B (24P).

7. Check for continuity between ECM/PCM connector terminal B18 and body ground.

ECM/PCM CONNECTOR B (24P)

Wire side of female terminals

Is there continuity?

YES - Repair short in the wire between the alternator and ECM/PCM.

NO - Substitute a known-good ECM/PCM, and recheck (see page 11-3) or 5-door (see page 11-309). If prescribed voltage is now available, replace the original ECM/PCM.

8. Turn the headlight and ignition switch OFF.
9. Disconnect ECM/PCM connector B (24P).
10. Check for continuity between ECM/PCM connector terminal B18 and alternator 4P connector terminal No. 2.

ECM/PCM CONNECTOR B (24P)

ALTERNATOR 4P CONNECTOR

Wire side of female terminals

Is there continuity?

YES - Repair the alternator (see page 4-32).

NO - Repair open in the wire between the alternator and ECM/PCM.