CHECK HARNESS BETWEEN SECONDARY AIR COMBINATION VALVE RELAY CONNECTOR AND SECONDARY AIR COMBINATION VALVE CONNECTOR.

1) Remove the secondary air combination valve relay from the relay box.

2) Measure resistance between the secondary air combination valve relay and secondary air combination valve connector.

Connector & terminal

(F9) No. 3 — (E40) No. 6:

(F9) No. 3 — (E4) No. 2:

QUESTION

Is the resistance less than 1 Ω?

Yes No

Repair the harness and connector.

NOTE:

In this case, repair the following item:

• Open circuit in harness between the secondary air combination valve relay and secondary air combination valve connector

• Poor contact of coupling connector