Model Without Push Button Start

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Failure of engine to start

Wiring diagram:

Engine Electrical System Ref. to WIRING SYSTEM>ENGINE ELECTRICAL SYSTEM .

Courtesy of SUBARU OF AMERICA, INC.

Courtesy of SUBARU OF AMERICA, INC.

CAUTION: Use the check board when measuring the ECM terminal voltage and resistance. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>General Description>PREPARATION TOOL>HOW TO USE CHECK BOARD .

NOTE: After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Basic Diagnostic Procedure>PROCEDURE .

CHECK DTC .
1. Turn the ignition switch to ON.
2. Using the Subaru Select Monitor or a general scan tool, perform the clear memory of [Engine]. Ref. to COMMON (diag)>CLEAR MEMORY .
3. Start and idle the engine for three minutes or more.
4. Using the Subaru Select Monitor or a general scan tool, read the DTC of [Engine]. Ref. to COMMON (diag)>DIAGNOSTIC TROUBLE CODE (DTC) .
  DTC Check
  
  Is DTC P0512 displayed? (Current malfunction)
  
  Yes : Go to 2.
  
  No : Even if DTC is detected, the circuit has returned to a normal condition at this time.
  
  Reproduce the failure, and then perform the diagnosis again.
  
  NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
CHECK HARNESS BETWEEN ECM AND IGNITION SWITCH (SHORT TO POWER SUPPLY) .
1. Turn the ignition to OFF.
2. Disconnect the connector from ECM.
3. Turn the ignition to ON.
4. Measure the voltage between ECM connector and engine ground.
  Connector & terminal
  
  (B134) No. 4 (+) - Engine ground (-):
  
  Is the voltage 10 V or more?
  
  Yes : Repair the short circuit to power supply in harness between ECM connector and ignition switch connector.
  
  No : Repair the poor contact of ECM connector.