CHECK POWER SUPPLY TO SECONDARY AIR COMBINATION VALVE.

1) Turn the ignition switch to OFF.

2) Disconnect connectors from the secondary air combination valves (LH and RH).

3) In the condition of step 3, measure the voltage between the secondary air combination valve and the chassis ground.

Connector & terminal

(E40) No. 6 (+) — Chassis ground (−):

(E41) No. 2 (+) — Chassis ground (−):

QUESTION

Does the voltage repeatedly change between 10 V and 0 V?

Yes No