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Home >> Subaru >> 2016 >> Crosstrek Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 31 (Hybrid Electric Vehicle System (Diagnostics) (Hybrid)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0C0D: Drive Motor "A" Inverter Power Supply Circuit High >> Wiring Diagram

DTC P0C0D: Drive Motor "A" Inverter Power Supply Circuit High: 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: Drive Motor A Inverter Power Supply Circuit - Wiring Diagram
G09479283Courtesy of SUBARU OF AMERICA, INC.
DTC PROCEDURE

Step Check Yes No
1 CHECK CURRENT DATA. 
  1. Using the Subaru Select Monitor, perform «Drive Motor Inverter power supply relay» of System Operation Check Mode for the drive motor control system. < Ref. to DRIVE MOTOR CONTROL SYSTEM , OPERATION, System Operation Check Mode.>
  2. Confirm the current data of in System Operation Check Mode, the value of «Drive Motor Inverter Operation Update Counter».
 Does «Drive Motor Inverter Operation Update Counter» stop when «Drive Motor Inverter power supply relay» is OFF? 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.
 Go to step 2  .
2 CHECK RELAY. 
Check the inverter power supply relay as a single unit. < Ref. to RELAY AND FUSE .>		 Is the condition normal? (Check for continuity between terminals, damage, etc.) Go to step 3  . Replace the relay.
3 CHECK HARNESS (SHORT TO GROUND). 
  1. Disconnect the DMCM connector.
  2. Using a tester, measure the resistance between DMCM connector and the ground bolt of inverter frame body.

    Connector & terminal 

    (R443) No. 24 - Ground bolt of inverter frame body: 

 Is the resistance 1 MΩ or more? Go to step 4  . Repair short circuit to ground in harness between DMCM connector and inverter power supply relay connector, or repair the intermediate connector.
4 CHECK HARNESS (SHORT TO POWER AND SHORT TO OTHER SIGNAL LINES). 
  1. Turn the ignition to OFF.
  2. 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.>
  3. Remove the service disconnect plug. < Ref. to SERVICE PLUG .>
  4. Wait for 10 minutes.
  5. Disconnect the drive motor inverter connector.
  6. Disconnect the intermediate connector (R436).
  7. Remove the inverter power supply relay.
  8. Using a tester, measure the resistance between inverter power supply relay connector and all DMCM signal pins.

    Connector & terminal 

    (R440) No. 12 - (R442) No. 1 - 22: 

    (R440) No. 12 - (R443) No. 1 - 26: 

    (R440) No. 12 - (R436) No. 1 - 8 (except No. 3): 

    (R440) No. 10 - (R442) No. 1 - 22: 

    (R440) No. 10 - (R443) No. 1 - 26 (except No. 24): 

    (R440) No. 10 - (R436) No. 1 - 8: 

    (R440) No. 10 - (R432) No. 7: 

 Is the resistance 1 MΩ or more? Replace DMCM. < Ref. to appropriate DRIVE MOTOR CONTROL MODULE in Continuously Variable Transmission TH58A article.> Repair short circuit in harness between the inverter power supply relay and DMCM, harness between inverter power supply relay and drive motor inverter, or repair the intermediate connector.
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