CHECK POWER SUPPLY CIRCUIT.

1) Turn the ignition switch to ON. (engine OFF)

2) Measure the ignition power supply voltage between VDCCM&H/U connector and chassis ground.

Connector & terminal

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

QUESTION

Is the voltage 10 — 15 V?

Yes No

Repair open circuit in harness between VDCCM&H/U and battery.