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Home >> Subaru >> 2015 >> WRX Limited, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls (Diagnostics) (H4DOTC) (STI)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P04AD EVAP System Purge Control Valve "B" Circuit High >> Wiring Diagram

DTC P04AD EVAP System Purge Control Valve "B" Circuit High: Wiring Diagram

WARNING: This page is about a different variant/trim than selected.
Fig 1: EVAP System Purge Control Valve "B" - Wiring Diagram (High)
G10265852Courtesy of SUBARU OF AMERICA, INC.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK HARNESS BETWEEN ECM AND PURGE CONTROL SOLENOID VALVE 2 CONNECTOR. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the connectors from ECM and purge control solenoid valve 2.
  3. Turn the ignition switch to ON.
  4. Measure the voltage between ECM connector and chassis ground.

    Connector & terminal 

    (B137) No. 15 (+) - Chassis ground (-): 

Is the voltage 10 V or more? Repair the short circuit to power in harness between ECM connector and purge control solenoid valve 2 connector. Go to step 2. 
2 CHECK PURGE CONTROL SOLENOID VALVE 2. 
  1. Turn the ignition switch to OFF.
  2. Measure the resistance between purge control solenoid valve 2 terminals.

    Terminals 

    No. 1 - No. 2: 

Is the resistance less than 1 Ω? Replace the purge control solenoid valve 2. <Ref. to PURGE CONTROL SOLENOID VALVE .> Repair the poor contact of ECM connector.