Signal Too High. Permanent Fault

Checking The Signal Cable
- Ignition OFF.
- Disconnect connector from canister purge (CP) valve.
- Ignition ON.
- Connect an electrician's screwdriver (3 W bulb at least) between canister purge valve connector terminal 2 and ground.
- The electrician's screwdriver should not light.

If reading is OK:
^ Try a new canister purge valve.
^ Proceed to: Verification section below.

If reading is incorrect:
^ Check signal cable between canister purge valve connector terminal 2 and engine control module (ECM) # A39 for a short-circuit to supply voltage.
^ Proceed to: Verification section below.





Verification
After carrying out the repair, check that the fault has been remedied as follows:

- Ignition OFF.
- Canister purge valve and control module connected.
- Ignition ON.
- Activate canister purge valve.
- A "clicking sound" can be heard from the canister purge valve when it is activated.
- Is the canister purge valve working?

If reading is OK:
^ Fault corrected.

If reading is incorrect:
^ Proceed to: Fault-tracing Information section below.

Fault-tracing Information
The verification result shows that the fault persists.

- Do you want to exit fault-tracing?

Yes:
^ Fault not corrected.

No:
^ Proceed to: Checking The Signal Cable section above.