CHECK SECONDARY AIR PUMP RELAY POWER SOURCE.

1) Turn the ignition switch to ON.

2) Measure the voltage between the secondary air pump relay connector and chassis ground.

Connector & terminal

(F9) No. 3 (+) — Chassis ground (−):

(F9) No. 4 (+) — Chassis ground (−):

QUESTION

Is the voltage more than 10 V?

Yes No

Repair the open or ground short circuit of power supply circuit.