Subaru Legacy BN/BS (2015-2019) Service Manual: Malfunction indicator light does not blink

Subaru Legacy BN/BS (2015-2019) Service Manual / Engine (diagnostics)(h6do) / Malfunction indicator light / Malfunction indicator light does not blink

DIAGNOSIS:

• The malfunction indicator light circuit is open or shorted.

• The delivery (test) mode fuse circuit is open.

TROUBLE SYMPTOM:

Malfunction indicator light does not blink during Inspection Mode.

WIRING DIAGRAM:

• Engine Electrical System ENGINE TYPE EZ (WITHOUT PUSH BUTTON START) Engine Electrical System > WIRING DIAGRAM

• Engine Electrical System ENGINE TYPE EZ (WITH PUSH BUTTON START) Engine Electrical System > WIRING DIAGRAM

STEP	CHECK	YES	NO
1.CHECK STATUS OF MALFUNCTION INDICATOR LIGHT. 1) Turn the ignition switch to OFF. 2) Check the delivery (test) mode fuse is removed. 3) Turn the ignition switch to ON. (Engine OFF)	Does the malfunction indicator light illuminate-	Malfunction Indicator Light > MALFUNCTION INDICATOR LIGHT DOES NOT BLINK	Repair the malfunction indicator light circuit. Malfunction Indicator Light > MALFUNCTION INDICATOR LIGHT DOES NOT COME ON
2.CHECK HARNESS BETWEEN ECM AND DELIVERY (TEST) MODE FUSE. 1) Turn the ignition switch to OFF. 2) Disconnect the connector from ECM. 3) Install the delivery (test) mode fuse. CAUTION: Do not use any fuses that are installed on the vehicle. 4) Measure the resistance of harness between ECM connectors. Connector & terminal (B134) No. 53 — (B134) No. 6:	Is the resistance less than 1 --	Malfunction Indicator Light > MALFUNCTION INDICATOR LIGHT DOES NOT BLINK	Repair the harness and connector. NOTE: In this case, repair the following item: • Open circuit of harness between ECM connector and delivery (test) mode fuse • Poor contact of joint 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. Engine Control Module (ECM)

Procedure

1. Activation of malfunction indicator light Malfunction Indicator Light > ACTIVATION OF MALFUNCTION INDICATOR LIGHT↓2. Malfunction indicator light does not come on Malfunction Indicator Light ...

Malfunction indicator light does not go off

TROUBLE SYMPTOM:Although malfunction indicator light comes on when the engine runs, DTC is not shown on the Subaru Select Monitor or general scan tool display.STEPCHECKYESNO1.CHECK DTC.Is DTC of engin ...

Other materials:

Inspection
1. Check the spark plug for abnormalities. If defective, replace the spark plug.(A)Terminal damage(B)Crack or damage in insulator(C)Damaged gasket2. Check the spark plug electrode and condition of the insulator. If abnormal, check and repair the cause and replace the spark plug.(1) Normal:Brown to g ...