DTC P0443: EVAP Canister Purge Valve Circuit Malfunction.
- Reset the ECM/PCM (see page 11-4).
- Turn the ignition switch ON (II).
Is the DTC P0443 indicated?
YES |
- Go to step 3. |
NO |
- Intermittent failure, system is OK at this time. Check for poor connections or loose wires between the EVAP canister purge valve and at the ECM/PCM. |
- Turn the ignition switch OFF.
- Disconnect the vacuum hose (A) from the EVAP canister (B) and connect a vacuum gauge (C) to the hose.
- Start the engine end let it idle.
Is there vacuum?
YES |
- Go to step 6. |
NO |
- Go to step 11. |
- Turn the ignition switch OFF.
- Disconnect the EVAP canister purge valve 2P connector.
- Check for continuity between the EVAP canister purge valve 2P connector terminal No. 2 and body ground.
Is there continuity?
YES |
- Go to step 9. |
NO |
- Replace the EVAP canister purge valve. |
- Disconnect ECM/PCM connector B (24P).
- Check for continuity between the EVAP canister purge valve 2P connector terminal No. 2 and body ground.
Is there continuity?
YES |
- Repair short in the wire between the EVAP canister purge valve and the ECM/PCM (B21). |
NO |
- Substitute a known-good ECM/PCM and recheck (see page 11-6). If symptom/indication goes away, replace the original ECM/PCM. |
