DTC P2530: Ignition Switch Run Position Circuit: Notes

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Improper idling

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode., and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Wiring diagram:

Engine electrical system Ref. to Engine Electrical System .

Fig 1: Ignition Switch Run Position - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK ECM CONNECTOR. Check the connecting condition of ECM connector.	Is the ECM connector correctly connected?	Go to step 2.	Connect the ECM connector correctly. B550
2 CHECK INPUT VOLTAGE OF ECM. Turn the ignition switch to ON. Measure the voltage between ECM connector and engine ground while wiggling the harness between ECM connector and F/B connector. Connector & terminal (B137) No. 2 (+) - Engine ground (-):	Is the voltage 8 V or more all the time?	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, the following items may be the cause of fault. Open circuit or short circuit to ground in harness between ECM connector and F/B connector Poor contact of fuse (F/B No. 5) Poor contact of IG2 relay connector Poor contact of IG2 relay	Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit or short circuit to ground in harness between ECM connector and F/B connector Poor contact of fuse (F/B No. 5) Poor contact of IG2 relay connector Poor contact of IG2 relay