DTC P1C06: 12V Battery Relay Close Circuit Performance: Wiring Diagram

WARNING: This page is about a different car, the 2015 Subaru XV Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.

Power Supply Circuit < Ref. to WIRING DIAGRAM , Power Supply Circuit.>

Fig 1: 12V Battery Relay Close Circuit Performance - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

DTC PROCEDURE

Step	Check	Yes	No
1 CHECK HARNESS (OPEN CIRCUIT). Disconnect the battery relay connector. Disconnect the HPCM connector. Using a tester, measure the resistance between the 12V battery relay connector and the HPCM connector and the resistance between 12V battery relay connector and chassis ground. Connector & terminal (B599) No. 1 - (B606) No. 22: (B606) No. 3 - Chassis ground:	Is the resistance less than 1 Ω?	Go to step 2 .	Repair open circuit in harness between the 12V battery relay connector and the HPCM connector and the harness between 12V battery relay connector and chassis ground.
2 CHECK HARNESS (SHORT TO GROUND). Using a tester, measure the resistance between 12V battery relay connector and chassis ground. Connector & terminal (B606) No. 22 - Chassis ground:	Is the resistance 1 MΩ or more?	Go to step 3 .	Repair the short circuit to ground in the harness between the 12V battery relay connector and the HPCM connector.
3 CHECK HARNESS (SHORT TO POWER). Turn the ignition switch to ON. Using a tester, measure the voltage between 12V battery relay connector and chassis ground. Connector & terminal (B599) No. 1 - Chassis ground: (B606) No. 22 - Chassis ground:	Is the voltage less than 1 V?	Replace the HPCM. < Ref. to HYBRID POWERTRAIN CONTROL MODULE .>	Repair the short circuit to power in the harness between the 12V battery relay connector and the HPCM connector.