DTC P1420 Fuel Tank Pressure Control Sol. Valve Circuit High: Wiring Diagram

WARNING: This page is about a different variant/trim than selected.

Fig 1: Evaporative Emission Control System - Wiring Diagram

G06647806

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK HARNESS BETWEEN ECM AND PRESSURE CONTROL SOLENOID VALVE CONNECTOR . Turn the ignition switch to OFF. Disconnect the connector from the ECM and pressure control solenoid valve. Turn the ignition switch to ON. Measure the voltage between ECM and chassis ground. Connector & terminal (B135) No. 3 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Repair the short circuit to power in the harness between ECM and pressure control solenoid valve connector.	Go to step 2 .
2 CHECK PRESSURE CONTROL SOLENOID VALVE . Turn the ignition switch to OFF. Measure the resistance between pressure control solenoid valve terminals. Terminals No. 1 - No. 2:	Is the resistance less than 1 Ω?	Replace the pressure control solenoid valve. Ref. to PRESSURE CONTROL SOLENOID VALVE .	Repair the poor contact of ECM connector.