CHECK HARNESS BETWEEN ECM AND SECONDARY AIR COMBINATION VALVE LH CONNECTOR.

Measure the resistance of harness between ECM and chassis ground.

Connector & terminal

(B136) No. 7 — 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 circuit of the harness between the ECM and secondary air combination valve relay LH connector.