CHECK VDCCM INPUT VOLTAGE.

1) Disconnect the connectors from VDCCM.

2) Run the engine at idle.

3) Measure the voltage between VDCCM connector and chassis ground.

Connector & terminal

(B310) No. 28 (+) — Chassis ground (−):

QUESTION

Is the voltage 10 — 15 V?

Yes No

Repair the harness connectors between the battery, ignition switch and VDCCM.