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.

Fig 1: Warning Light Illumination Pattern Diagnosis Flowchart (Malfunction Indicator Light OFF)

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK DTC  .

   Read the DTC of engine or LAN system using the Subaru Select Monitor or a general scan tool. Ref. to ENGINE (DIAGNOSTICS) >Diagnostic Trouble Code (DTC) . Ref. to LAN SYSTEM (DIAGNOSTICS)>Diagnostic Trouble Code (DTC) .

   Is DTC of engine or LAN system displayed?

   Yes: Check the appropriate DTC using the "Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) >Diagnostic Trouble Code (DTC)>LIST . Ref. to LAN SYSTEM (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST .

   No: Go to 2  .

2. CHECK COMBINATION METER  .

Perform the self-diagnosis for combination meter system. Ref. to INSTRUMENTATION/DRIVER INFO>Combination Meter System>OPERATION>SELF-DIAGNOSIS DISPLAY MODE .

Does the malfunction indicator light illuminate and go off normally?

Yes: Replace the ECM. Ref. to FUEL INJECTION (FUEL SYSTEMS) >Engine Control Module (ECM) .

No: Replace the meter case assembly of combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>Combination Meter .