Signal Too High. Permanent Fault

Checking Signal Cable
- Ignition off.
- Remove signal cable from pulsed secondary air injection system (PAIR) pump relay connector B.
- Ignition on.
- Connect a test light (3 W bulb at least) between pulsed secondary air injection system pump relay connector terminal B1 and ground.
- The bulb should not light.

If reading is OK:
^ Try a new pulsed secondary air injection system pump relay.
^ Then proceed to Verification section below.

If reading is incorrect:
^ Check signal cable between pulsed secondary air injection system pump relay connector B1 and engine control module (ECM) # B38 for a short-circuit to supply voltage.
^ Then proceed to Verification section below.





Verification
- After carrying out the repair, check that the fault has been remedied as follows.
- Ignition on.
- Activate pulsed secondary air injection system pump.
- A "clicking sound" should be heard from the relay and the pulsed secondary air injection system pump should start.

If reading is OK:
^ Fault corrected

If reading is incorrect:
^ Proceed to test step below.

Fault-tracing Information
- The verification result shows that the fault persists.
- Do you want to exit fault-tracing?

Yes:
^ Fault not corrected

No:
^ Return to Checking Signal Cable section above.