CHECK HARNESS BETWEEN ECM AND SECONDARY AIR PUMP RELAY.

Measure the resistance of harness between ECM and chassis ground.

Connector & terminal

(B135) No. 5 — Chassis ground:

QUESTION

Is the resistance 1 MΩ or more?

Yes No

Temporary poor contact occurs. Check the poor contact of connector.

Repair ground short of the harness between the ECM and secondary air pump relay.