DTC P0458 Evaporative Emission System Purge Control Valve Circuit Low: Wiring Diagram
WARNING: This page is about a different variant/trim than selected.
Engine electrical system, non-turbo model < Refer to appropriate SYSTEM WIRING DIAGRAM. >
DIAGNOSTIC PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
1 CHECK OUTPUT SIGNAL OF ECM.
|
Is the voltage 10 V or more? | Go to step 2 . | Go to step 3 . |
| 2 CHECK FOR POOR CONTACT. Check for poor contact of ECM connector. |
Is there poor contact of ECM connector? | Repair the poor contact of ECM connector. | Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
NOTE:
In this case, temporary open or short circuit of harness or temporary poor contact of connector may be the cause.
|
| 3 CHECK POWER SUPPLY TO PURGE CONTROL SOLENOID VALVE. Measure the voltage between purge control solenoid valve connector and engine ground. Connector & terminal (E4) No. 1 (+) - Engine ground (-): |
Is the voltage 10 V or more? | Go to step 4 . | Repair the power supply circuit. |
4 CHECK HARNESS BETWEEN ECM AND PURGE CONTROL SOLENOID VALVE CONNECTOR.
|
Is the resistance 1 MΩ or more? | Go to step 5 . | Repair the ground short circuit of harness between ECM and purge control solenoid valve connector. |
| 5 CHECK HARNESS BETWEEN ECM AND PURGE CONTROL SOLENOID VALVE CONNECTOR. Measure the resistance of harness between ECM and purge control solenoid valve. Connector & terminal (B137) No. 6 - (E4) No. 2: |
Is the resistance less than 1 Ω? | Go to step 6 . | Repair the harness and connector.
NOTE:
In this case, repair the following item:
|
6 CHECK PURGE CONTROL SOLENOID VALVE.
|
Is the resistance 10 - 100 Ω? | Repair the poor contact of purge control solenoid valve connector. | Replace the purge control solenoid valve. < Refer to PURGE CONTROL SOLENOID VALVE . > |