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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 P0BE8: Drive Motor "A" Phase U Current Sensor Circuit High >> Wiring Diagram

DTC P0BE8: Drive Motor "A" Phase U Current Sensor 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 Phase U Current Sensor Circuit - Wiring Diagram
G09479278Courtesy 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 «Phase U Amperage Sensor Voltage». < Ref. to DRIVE MOTOR CONTROL SYSTEM , OPERATION, Read Current Data.>		 Is the value 4.5 V or more? 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 HARNESS (SHORT TO GROUND). 
  1. Turn the ignition switch 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 DMCM connector.
  6. Disconnect the drive motor inverter amperage sensor connector.
  7. Using a tester, measure the resistance between DMCM connector and the ground bolt of inverter frame body.

    Connector & terminal 

    (R443) No. 18 - (R434) No. 1: 

    (R443) No. 17 - (R434) No. 4: 

 Is the resistance less than 1 Ω? Go to step 3  . Repair short to ground circuit in harness between DMCM connector and drive motor inverter amperage sensor connector, or repair the intermediate connector.
3 CHECK HARNESS (SHORT TO POWER AND SHORT TO OTHER SIGNAL LINES). 
  1. Disconnect the drive motor inverter connector.
  2. Disconnect the intermediate connector (R436).
  3. Using a tester, measure the resistance within the DMCM connector and between the DMCM connector and the drive motor inverter connector.

    Connector & terminal: 

    (R443) No. 7 - (R442) No. 1 - 22: 

    (R443) No. 7 - (R443) No. 1 - 26: 

    (R443) No. 7 - (R436) No. 1 - 8: 

    (R443) No. 7 - (R432) No. 7: 

    (R443) No. 5 - (R442) No. 1 - 22: 

    (R443) No. 5 - (R443) No. 1 - 26: 

    (R443) No. 5 - (R436) No. 1 - 8: 

    (R443) No. 5 - (R432) No. 7: 

    (R443) No. 3 - (R442) No. 1 - 22: 

    (R443) No. 3 - (R443) No. 1 - 26: 

    (R443) No. 3 - (R436) No. 1 - 8: 

    (R443) No. 3 - (R432) No. 7: 

 Is the resistance 1 MΩ or more? Go to step 4  . Repair short circuit to power in harness between DMCM connector and drive motor inverter amperage sensor connector, or repair the intermediate connector.
4 CHECK DRIVE MOTOR INVERTER AMPERAGE SENSOR. 
  1. Replace the drive motor inverter amperage sensor. < Ref. to DRIVE MOTOR INVERTER CURRENT SENSOR .>
  2. Perform the Inspection Mode. < Ref. to INSPECTION MODE .>
 Is the same DTC detected? Replace DMCM. < Ref. to appropriate DRIVE MOTOR CONTROL MODULE in Continuously Variable Transmission TH58A article.> Problem is present in drive motor inverter amperage sensor.
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