Malfunction Indicator Light Does Not Blink: Wiring Diagram

Engine electrical system. Refer to appropriate ENGINE PERFORMANCE wiring diagram. >

Fig 1: Malfunction Indicator Light Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK STATUS OF MALFUNCTION INDICATOR LIGHT. Turn the ignition switch to OFF. Check the delivery (test) mode connector is disconnected. Turn the ignition switch to ON. (engine OFF)	Does the malfunction indicator light illuminate?	Go to step 2 .	Repair the malfunction indicator light circuit. Refer to MALFUNCTION INDICATOR LIGHT DOES NOT COME ON , Malfunction Indicator Light.
2 CHECK HARNESS BETWEEN ECM AND DELIVERY (TEST) MODE CONNECTOR. Turn the ignition switch to OFF. Disconnect the connector from ECM. Connect the delivery (test) mode connector. Measure the resistance of harness between ECM connectors. Connector & terminal (B136) No. 34 - (B136) No. 4:	Is the resistance less than 1 Ω?	Go to step 3 .	Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM connector Poor contact of each connector between ECM connector
3 CHECK FOR POOR CONTACT. Check for poor contact of ECM connector.	Is there poor contact of ECM connector?	Repair the poor contact of ECM connector.	Replace the ECM. Refer to ENGINE CONTROL MODULE (ECM)