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Drive Motor Control System: 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 Control System - Wiring Diagram
G09479216Courtesy of SUBARU OF AMERICA, INC.
Step Check Yes No
1 CHECK FUSE. 
Check DMCM fuse. < Ref. to RELAY AND FUSE .>
Is the condition normal? Go to step . Replace the fuse. When the replaced fuse is blown immediately, repair ground short circuit of harness between 12 volt auxiliary battery and HPCM.
2 CHECK HARNESS. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the DMCM connector.
  3. Turn the ignition switch to ON.
  4. Using a tester, measure the voltage between the DMCM connector and chassis ground.

    Connector & terminal 

    (B443) No. 11 (+) - Chassis ground (-): 

    (B443) No. 10 (+) - Chassis ground (-): 

Is the voltage 10 - 13 V? Go to step . Repair the open circuit of the harness between the DMCM connector and the fuse.
3 CHECK OTHER COMMUNICATION. 
Communicate with the system other than the drive motor control system using the Subaru Select Monitor.
Is the communication to other control module possible? Go to step . Perform the "COMMUNICATION FOR INITIALIZING IMPOSSIBLE " of LAN system. < Ref. to COMMUNICATION FOR INITIALIZING IMPOSSIBLE , Subaru Select Monitor.>
4 CHECK LAN SYSTEM. 
Inspect LAN system. < Ref. to PROCEDURE , Basic Diagnostic Procedure.>
Is there any fault? Perform the inspection according to the diagnosis for LAN system. Go to step .
5 CHECK DMCM. 
  1. Turn the ignition switch to OFF.
  2. Connect the DMCM connector.
  3. Communicate with the drive motor control system using the Subaru Select Monitor.
Is communication possible? It is possible that temporary poor communication occurs. Replace DMCM. < Ref. to appropriate DRIVE MOTOR CONTROL MODULE in Continuously Variable Transmission TH58A article.>