ENGINE (DIAGNOSTICS)(H4DOTC DIESEL) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC P0512 STARTER REQUEST CIRCUIT

DTC DETECTING CONDITION:

Immediately at fault recognition

TROUBLE SYMPTOM:

Failure of engine to start

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode and Inspection Mode .

WIRING DIAGRAM:

STEPCHECKYESNO

1.CHECK PUSH BUTTON IGNITION SWITCH.

Operate the push button ignition switch.

Does it operate smoothly without catch?

Replace the push button ignition switch.

2.CHECK DTC.

1) Clear the memory using the Subaru Select Monitor or general scan tool.

NOTE:

For detailed procedures, refer to “Clear Memory Mode”.

2) Start and idle the engine for three minutes or more.

Is the same DTC as current diagnosis output?

The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

3.CHECK HARNESS BETWEEN ECM AND POWER SUPPLY CM.

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 chassis ground.

Connector & terminal

(B134) No. 27 (+) — Chassis ground (−):

Is the voltage 10 V or more?

Repair the short circuit to power supply in harness between ECM connector and power supply CM connector.

Repair the poor contact of ECM connector.