CHECK POWER SUPPLY CM.

1) Connect the power supply CM connector, and attach IG relay 1 (push button start) and IG relay 2 (push button start).

2) Using a tester, measure the voltage between the back of the power supply CM connector and the terminal and chassis ground when the ignition switch is turned from OFF to ON.

Connector & terminal

(B420) No. 34 (+) — Chassis ground (−):

(B420) No. 35 (+) — Chassis ground (−):

QUESTION

Did the voltage change from 1 V or less to +B−2 V or more?

Yes No

System is normal.

Replace the power supply CM.