DTC P1499 EGR Solenoid Valve Signal #4 Circuit Malfunction (High Input): Wiring Diagram

Fig 1: EGR Valve - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK HARNESS BETWEEN ECM AND EGR VALVE CONNECTOR.  Turn the ignition switch to OFF. Disconnect the connectors from ECM and EGR valve. Turn the ignition switch to ON. Measure the voltage between ECM and chassis ground. Connector & terminal  DTC P1493; (B134) No. 8 (+) - Chassis ground (-):  DTC P1495; (B134) No. 9 (+) - Chassis ground (-):  DTC P1497; (B134) No. 20 (+) - Chassis ground (-):  DTC P1499; (B134) No. 30 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Repair the short circuit to power in the harness between the ECM and EGR valve connectors.	Go to step 2.
2 CHECK EGR VALVE.  Measure the resistance between EGR valve terminals. Terminals  DTC P1493; No. 2 - No. 3:  DTC P1493; No. 5 - No. 3:  DTC P1495; No. 2 - No. 1:  DTC P1495; No. 5 - No. 1:  DTC P1497; No. 2 - No. 4:  DTC P1497; No. 5 - No. 4:  DTC P1499; No. 2 - No. 6:  DTC P1499; No. 5 - No. 6:	Is the resistance 20 Ω or more?	Repair the poor contact of ECM connector.	Replace the EGR valve. Ref. to EGR VALVE .