CHECK INPUT VOLTAGE OF ECM.

1) Start the engine.

2) Measure the voltage between ECM connector and chassis ground.

Connector & terminal

(B134) No. 7 (+) — Chassis ground (−):

(B135) No. 2 (+) — Chassis ground (−):

QUESTION

Is the voltage 13 — 15 V?

Yes No

Repair the open or ground short circuit of power supply circuit.