## Charging System

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

4-24

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

ECM CONNECTOR B (24P)

Wire side of female terminals

Is there continuity?

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

NO - Substitute a known-good ECM, and recheck (see page 11-5).

If prescribed voltage is now available, replace the original ECM.

8. Turn the headlights and ignition switch OFF.
9. Disconnect ECM connector B (24P).

10. Check for continuity between ECM connector terminal B18 and engine wire harness 6P connector terminal No. 2.

ECM CONNECTOR B (24P)

ENGINE WIRE HARNESS 6P CONNECTOR

Wire side of female terminals

Is there continuity?

YES - Repair the alternator (see page 4-29).

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

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