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DTC P0512 Starter Request Circuit: Wiring Diagram

Engine electrical system, 2.5 L model (with push button start). See appropriate SYSTEM WIRING DIAGRAM article.

Fig 1: Starter Motor - Circuit Diagram (Model With Push Button Start)

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Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK PUSH BUTTON IGNITION SWITCH. Operate the push button ignition switch.	Does it operate smoothly without catch?	Go to step 2 .	Replace the push button ignition switch. Refer to PUSH BUTTON IGNITION SWITCH .
2 CHECK DTC. Clear the memory using the Subaru Select Monitor. Refer to CLEAR MEMORY MODE . Start and idle the engine for three minutes or more.	Is the same DTC as current diagnosis output?	Go to step 3 .	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.
3 CHECK HARNESS BETWEEN ECM AND KEYLESS ACCESS CM. Turn the ignition to OFF. Disconnect the connector from ECM. Turn the ignition to ON. Measure the voltage between ECM and chassis ground. Connector & terminal (B137) No. 17 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Repair the short circuit to power supply in harness between ECM and keyless access CM.	Repair the poor contact of ECM connector.