CHECK IGNITION SWITCH CIRCUIT.

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

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

Connector & terminal

(B141) No. 24 (+) — Chassis ground (−):

QUESTION

Is the voltage 10 V or more?

Yes No

Check the harness for open or short between IMM ECM and ignition switch.