Subaru Crosstrek Service Manual: Malfunction indicator light does not blink
ENGINE (DIAGNOSTICS)(H4DO) > 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 Electrical System">
| 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">Go to Step 2.
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
(B137) No. 13 — (B137) No. 4:
Is the resistance less than 1 ??
Malfunction Indicator Light > MALFUNCTION INDICATOR LIGHT DOES NOT BLINK">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. Engine Control Module (ECM)">
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