DTC P06EF: Engine Restart 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.

Hybrid system < Ref. to WIRING DIAGRAM , Hybrid Electric Vehicle System.>

Fig 1: Engine Restart Performance - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

DTC PROCEDURE

Step	Check	Yes	No
1 CHECK DTC. Read the DTC. < Ref. to HYBRID POWERTRAIN CONTROL SYSTEM , OPERATION, Read Diagnostic Trouble Code (DTC).>	Are any other DTCs detected? (current malfunction)	Perform the diagnosis according to DTC. < Ref. to HYBRID POWERTRAIN CONTROL SYSTEM , LIST, List of Diagnostic Trouble Code (DTC).>	Go to step 2 .
2 CHECK INTEGRATED STARTER GENERATOR (SHORT TO GROUND). Disconnect the ground cable of the 12 volt auxiliary battery, and as for the 12 volt engine restart battery, disconnect the ground cable from the 12V engine restart battery sensor. < Ref. to BATTERY , NOTE, Note.> Check the installation condition of integrated starter generator. < Ref. to INTEGRATED STARTER GENERATOR (ISG) .>	Is the condition normal?	Go to step 3 .	Attach the integrated starter generator securely.
3 CHECK HARNESS (OPEN CIRCUIT). Disconnect the HPCM connector. Disconnect the integrated starter generator connector. Using a tester, measure the resistance between the HPCM connector and integrated starter generator connector. Connector & terminal (B606) No. 15 - (E162) No. 2:	Is the resistance less than 1 Ω?	Go to step 4 .	Repair the open circuit of the harness between the HPCM connector and the integrated starter generator connector.
4 CHECK HARNESS (SHORT TO GROUND). Using a tester, measure the resistance between HPCM connector and chassis ground. Connector & terminal (B606) No. 15 - Chassis ground:	Is the resistance 1 MΩ or more?	Go to step 5 .	Repair ground short circuit of harness between the HPCM connector and the integrated starter generator connector.
5 CHECK HARNESS (SHORT TO POWER). Connect the disconnected battery. Turn the ignition switch to ON. Using a tester, measure the voltage between the HPCM connector and chassis ground. Connector & terminal (B606) No. 15 (+) - Chassis ground (-):	Is the voltage less than 1 V?	Go to step 6 .	Repair the short circuit to power in harness between the HPCM connector and the integrated starter generator connector.
6 INSPECTION OF INTEGRATED STARTER GENERATOR UNIT. Check the integrated starter generator as a single part. < Ref. to INTEGRATED STARTER GENERATOR (ISG) .>	Is the condition normal?	Go to step 7 .	Replace the integrated starter generator.
7 CHECK BATTERY. Check the 12 volt engine restart battery. < Ref. to BATTERY .>	Is the condition normal?	Replace the HPCM. < Ref. to HYBRID POWERTRAIN CONTROL MODULE .>	Charge or replace the battery.