DTC P1C22: Manufacturer Controlled DTC: 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: Manufacturer Controlled DTC - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

DTC PROCEDURE

Step	Check	Yes	No
1 CHECK CURRENT DATA. Using the Subaru Select Monitor, confirm the current data of drive motor control system, the value of «Control Module Voltage». < Ref. to DRIVE MOTOR CONTROL SYSTEM , OPERATION, Read Current Data.>	Is the value 9 V or less?	Go to step 2 .	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.
2 CHECK BATTERY. Turn the ignition switch to OFF. Disconnect battery terminals. Check the 12 volt auxiliary battery as a single part. < Ref. to BATTERY .>	Is the condition normal?	Go to step 3 .	Charge or replace the battery.
3 CHECK HARNESS (OPEN CIRCUIT). Connect the 12 volt auxiliary battery. Using a tester, measure the voltage between the DMCM power relay and the ground bolt of inverter frame body. Connector & terminal (R440) No. 2 (+) - Ground bolt of inverter frame body (-):	Is the voltage 9 V or less?	Repair open circuit in harness between DMCM power supply relay connector and 12 volt auxiliary battery, or repair the intermediate connector.	Go to step 4 .
4 CHECK HARNESS (SHORT TO GROUND). Disconnect the DMCM connector. Remove the DMCU power relay. < Ref. to appropriate RELAY AND FUSE in Continuously Variable Transmission TH58A article.> Using a tester, measure the resistance between DMCM connector terminals and the ground bolt of inverter frame body. Connector & terminal (R443) No. 13 - Ground bolt of inverter frame body: (R443) No. 26 - Ground bolt of inverter frame body:	Is the resistance 1 MΩ or more?	Replace DMCM. < Ref. to appropriate DRIVE MOTOR CONTROL MODULE in Continuously Variable Transmission TH58A article.>	Repair short to ground circuit in harness between DMCM power supply relay connector and 12 volt auxiliary battery, or repair the intermediate connector.