Check Engine Malfunction Indicator Lamp (Mil) Does Not Blink At A Cycle Of 3 HZ

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

DIAGNOSIS:
- The CHECK ENGINE malfunction indicator lamp (MIL) circuit is open or shorted.
- Test mode connector circuit is in open.
TROUBLE SYMPTOM:
- When inspection mode, MIL does not blink at a cycle of 3 Hz.
WIRING DIAGRAM:

Fig 1: Engine Malfunction Indicator Lamp Does Not Blink Wiring Diagram
Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK STATUS OF CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL). Turn ignition switch to OFF. Disconnect test mode connector. Turn ignition switch to ON. (engine OFF)	Does the MIL come on?	Go to step 2.	Repair the MIL circuit. < Ref. to CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) DOES NOT COME ON. . >
2 CHECK HARNESS BETWEEN COMBINATION METER AND ECM CONNECTOR. Turn ignition switch to OFF. Disconnect connector from ECM. Turn ignition switch to ON.	Does the MIL come on?	Repair ground short circuit in harness between combination meter and ECM connector.	Go to step 3.
3 CHECK HARNESS BETWEEN TEST MODE CONNECTOR AND CHASSIS GROUND. Turn ignition switch to OFF. Disconnect connector from ECM. Measure resistance of harness between test mode connector and chassis ground. Connector & terminal (B76) No. 1 - Chassis ground:	Is the measured value less than 1 Ω?	Go to step 4.	Repair harness and connector. NOTE: In this case, repair the following: Open circuit in harness between test mode connector and chassis ground
4 CHECK POOR CONTACT. Check poor contact in ECM connector.	Is there poor contact in ECM connector?	Repair poor contact in ECM connector.	Go to step 5.
5 CHECK HARNESS BETWEEN ECM AND TEST MODE CONNECTOR. Connect test mode connector. Measure resistance of harness between ECM and chassis ground. Connector & terminal (B136) No. 3 - Chassis ground:	Is the measured value less than 1 Ω?	Go to step 6.	Repair open circuit in harness between ECM and test mode connector.
6 CHECK POOR CONTACT. Check poor contact in ECM connector.	Is there poor contact in ECM connector?	Repair poor contact in ECM connector.	Replace ECM. < Ref. to ENGINE CONTROL MODULE . >