CHECK SHORT CIRCUIT OF ELECTRONIC THROTTLE CONTROL RELAY POWER SUPPLY.

1) Turn the ignition switch to ON.

2) Measure the voltage between electronic throttle control relay connector and chassis ground.

Connector & terminal

(B220) No. 30 (+) — Chassis ground (−):

QUESTION

Is the voltage 10 V or more?

Yes No

Repair the short circuit of harness to power supply between ECM and electronic throttle control relay.