DTC P0A44: Drive Motor "A" Position Sensor Circuit OVERSPEED: 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.

CVT control system < Ref. to WIRING DIAGRAM , CVT Control System.>

Fig 1: Drive Motor A Position Sensor Circuit - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

DTC PROCEDURE

Step	Check	Yes	No
1 CHECK DTC. Read DTCs of the following system. Transmission < Ref. to appropriate READ DIAGNOSTIC TROUBLE CODE (DTC) in CVT Diagnostics (TR58A) article.>	Is DTC detected? (current malfunction)	Perform the diagnosis according to DTC. < Ref. to appropriate LIST OF DIAGNOSTIC TROUBLE CODE (DTC) in CVT Diagnostics (TR58A) article.>	Go to step 2 .
2 CHECK DTC. Read the DTC. < Ref. to DRIVE MOTOR CONTROL SYSTEM , OPERATION, Read Diagnostic Trouble Code (DTC).>	Is either DTC P0A3F or P0A43 detected? (current malfunction)	Perform the diagnosis according to DTC. < Ref. to DRIVE MOTOR CONTROL SYSTEM , LIST, List of Diagnostic Trouble Code (DTC).>	Go to step 3 .
3 CHECK HARNESS AND DRIVE MOTOR. Turn the ignition switch to OFF. Disconnect the DMCM connector (R442). Using a tester, measure the resistance between terminals in DMCM connector. Connector & terminal R1-R2 (R442) No. 6 - (R442) No. 17: S1-S3 (R442) No. 10 - (R442) No. 8: S2-S4 (R442) No. 9 - (R442) No. 7:	Is each resistance value as shown in below? R1-R2: Is the value out of 7 - 23 Ω range? or S1-S3: Is the value out of 10 - 39 Ω range? or S2-S4: Is the value out of 11 - 40 Ω range?	Go to step 4 .	Go to step 5 .
4 CHECK DRIVE MOTOR. Disconnect the drive motor assembly connector. Using a tester, measure the resistance between terminals in the drive motor assembly connector. Connector & terminal R1-R2 (T32) No. 14 - (T32) No. 15: S1-S3 (T32) No. 9 - (T32) No. 10: S2-S4 (T32) No. 12 - (T32) No. 11:	Is each resistance value as shown in below? R1-R2: Is the value out of 7 - 23 Ω range? or S1-S3: Is the value out of 10 - 39 Ω range? or S2-S4: Is the value out of 11 - 40 Ω range?	Replace the drive motor assembly. < Ref. to appropriate DRIVE MOTOR ASSEMBLY in Continuously Variable Transmission TH58A article.>	Repair the open circuit and short circuit to ground in harness between DMCM connector and drive motor assembly connector.
5 CHECK HARNESS AND DRIVE MOTOR. Using a tester, measure the resistance between DMCM connector terminals and the ground bolt of inverter frame body. Connector & terminal (R442) No. 6 - Ground bolt of inverter frame body: (R442) No. 10 - Ground bolt of inverter frame body: (R442) No. 9 - Ground bolt of inverter frame body:	Does the resistance between either two points show 1 MΩ or less?	Go to step 6 .	Go to step 7 .
6 CHECK DRIVE MOTOR. Disconnect the drive motor assembly connector. Using a tester, measure the resistance between the drive motor assembly connector and chassis ground. Connector & terminal (T32) No. 14 - Chassis ground: (T32) No. 9 - Chassis ground: (T32) No. 12 - Chassis ground:	Does the resistance between either two points show 1 MΩ or less?	Replace the drive motor assembly. < Ref. to appropriate DRIVE MOTOR ASSEMBLY in Continuously Variable Transmission TH58A article.>	Repair the short circuit to ground in harness between DMCM connector and drive motor assembly connector.
7 CHECK HARNESS. Disconnect the drive motor assembly connector. Using a tester, measure the resistance between terminals in the DMCM connector (R442, R443), between the terminals in the intermediate connector (R436), and between terminals in the drive motor assembly connector. Connector & terminal (R442) No. 10 - (R442) No. 1 - 22 (except No. 8): (R442) No. 10 - (R443) No. 1 - 26: (R442) No. 10 - (R436) No. 1 - 8: (R442) No. 8 - (R442) No. 1 - 22 (except No. 10): (R442) No. 8 - (R443) No. 1 - 26: (R442) No. 8 - (R436) No. 1 - 8: (R442) No. 9 - (R442) No. 1 - 22 (except No. 7): (R442) No. 9 - (R443) No. 1 - 26: (R442) No. 9 - (R436) No. 1 - 8: (R442) No. 7 - (R442) No. 1 - 22 (except No. 9): (R442) No. 7 - (R443) No. 1 - 26: (R442) No. 7 - (R436) No. 1 - 8: (R442) No. 6 - (R442) No. 1 - 22 (except No. 17): (R442) No. 6 - (R443) No. 1 - 26: (R442) No. 6 - (R436) No. 1 - 8: (R442) No. 17 - (R442) No. 1 - 22 (except No. 6): (R442) No. 17 - (R443) No. 1 - 26: (R442) No. 17 - (R436) No. 1 - 8:	Does the resistance between either two points show 1 MΩ or more?	Go to step 8 .	Repair the short circuit of harness between DMCM connector and drive motor assembly connector, or repair the intermediate connector.
8 CHECK HARNESS. Disconnect the drive motor assembly connector. Using a tester, measure the resistance between terminals in the drive motor assembly connector. Connector & terminal (B603) No. 9 - (B603) No. 1 - 20 (except No. 10): (B603) No. 10 - (B603) No. 1 - 20 (except No. 9): (B603) No. 12 - (B603) No. 1 - 20 (except No. 11): (B603) No. 11 - (B603) No. 1 - 20 (except No. 12): (B603) No. 14 - (B603) No. 1 - 20 (except No. 15): (B603) No. 15 - (B603) No. 1 - 20 (except No. 14):	Does the resistance between either two points show 1 MΩ or more?	Go to step 9 .	Repair the short circuit of harness between DMCM connector and drive motor assembly connector, or repair the intermediate connector.
9 CHECK DRIVE MOTOR. Using a tester, measure the resistance between terminals in the drive motor assembly connector. Connector & terminal (T32) No. 9 - (T32) No. 1 - 20 (except No. 10): (T32) No. 12 - (T32) No. 1 - 20 (except No. 11): (T32) No. 14 - (T32) No. 1 - 20 (except No. 15):	Does the resistance between either two points show 1 MΩ or more?	Replace DMCM. < Ref. to appropriate DRIVE MOTOR CONTROL MODULE in Continuously Variable Transmission TH58A article.>	Replace the drive motor assembly. < Ref. to appropriate DRIVE MOTOR ASSEMBLY in Continuously Variable Transmission TH58A article.>