DTC P2444 Secondary Air Injection System Pump Stuck On: Wiring Diagram

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Engine electrical system, turbo model < Refer to appropriate SYSTEM WIRING DIAGRAM. >

Fig 1: Secondary Air Injection System - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK SECONDARY AIR PIPING PRESSURE. Turn the ignition switch to ON. Using the Subaru Select Monitor, compare the value in «Sec. Air Piping Pressure» with the atmospheric pressure. NOTE: For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". < Refer to SUBARU SELECT MONITOR . >	Is the difference between «Sec. Air Piping Pressure» and atmospheric pressure 50 mmHg (6.7 kPa, 2.0 inHg, 0.97 psig) or more?	Go to step 2.	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 poor contact of connector, temporary open or short circuit of harness may be the cause.
2 CHECK SECONDARY AIR PUMP. Start the engine and warm up engine until coolant temperature is higher than 75°C (167°F). Check whether the secondary air pump is operating.	Is the secondary air pump operating?	Go to step 3.	Replace the secondary air combination valve RH. < Refer to SECONDARY AIR COMBINATION VALVE . >
3 CHECK HARNESS BETWEEN ECM AND SECONDARY AIR PUMP RELAY CONNECTOR. Turn the ignition switch to OFF. Remove the secondary air pump relay from the relay holder. Measure the resistance between the secondary air pump relay connector and engine ground terminals. Connector & terminal (F9) No. 13 - Engine ground:	Is the resistance 1 MΩ or more?	Go to step 4.	Repair the short circuit to ground in harness between ECM and secondary air pump relay connector.
4 CHECK SECONDARY AIR PUMP RELAY. Measure the resistance between the secondary air pump relay terminals. Terminals No. 14 - No. 11:	Is the resistance 1 MΩ or more?	Repair the short circuit to power in the harness between secondary air pump relay and secondary air pump connector.	Replace the secondary air pump relay. < Refer to ELECTRICAL COMPONENT LOCATION . >