DTC P0443 (CPC) - Evaporative Emission Control System Purge Control Valve Circuit Malfunction
NOTE:
Refer to illustration for connector and terminal identification. See Figure
-Figure
.
- Turn ignition to ON. Measure voltage between ECM connector B84, terminal No. 59 and ground. If voltage is 10 volts or more, go to step 2). If voltage is less than 10 volts, go to step 3).
- Turn ignition to OFF. Disconnect connector from purge control solenoid valve. Turn ignition to ON. Measure voltage between ECM connector B84, terminal No. 59 and ground. If voltage is 10 volts or more, repair short in harness between ECM connector and purge control solenoid valve connector. If voltage is less than 10 volts, check for poor contact in ECM connector and repair as necessary. If contact is okay, replace ECM.
- Turn ignition to OFF. Disconnect connectors from purge control solenoid valve and ECM. Measure resistance between purge control solenoid valve connector E4, terminal No. 2 and ground. If resistance is 10 ohms or more, repair short in harness between ECM connector and purge control solenoid valve connector. If resistance is more than 10 ohms, measure resistance between ECM connector B83, terminal No. 59 and purge control solenoid valve connector E4, terminal No. 2. If resistance is 10 ohms or less, go to next step. If resistance is more than 10 ohms, repair open in harness between ECM connector and purge control solenoid valve connector.
- Remove purge control solenoid valve. Measure resistance between purge control valve terminals. If resistance is 10-100 ohms, go to step 5). If resistance is less than 10 or more than 100 ohms, replace purge control solenoid.
- Turn ignition to ON. Measure voltage between purge control solenoid valve connector E4, terminal No. 1 and ground. If voltage is 10 volts or more, confirm there is a good connection at purge control solenoid valve connector. If voltage is less than 10 volts, repair open circuit in harness between main relay connector and purge control solenoid connector.