DTC P0A82: Hybrid/EV Battery Pack Cooling Fan 1 Performance/Stuck Off: 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: Hybrid/EV Battery Pack Cooling Fan 1 Performance - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

DTC PROCEDURE

Step	Check	Yes	No
1 CHECK HIGH VOLTAGE BATTERY COOLING FAN. Using the Subaru Select Monitor, perform «High Voltage Battery Cooling Fan» of System Operation Check Mode for the drive motor control system. < Ref. to DRIVE MOTOR CONTROL SYSTEM , OPERATION, System Operation Check Mode.>	Does the cooling fan speed change when the speed is switched across 4 steps (Stop, Steps 1 - 3)?	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 HARNESS (OPEN CIRCUIT). Turn the ignition switch to OFF. Disconnect the DMCM connector. Disconnect the high voltage battery cooling fan connector. Using a tester, measure the resistance between the high voltage battery cooling fan connector and the ground bolt of inverter frame body. Connector & terminal (R443) No. 21 - (R438) No. 3: (R443) No. 22 - (R438) No. 2: (R438) No. 1 - Ground bolt of inverter frame body: (R438) No. 4 - (R440) No. 11:	Is the resistance less than 1 Ω?	Go to step 3 .	Repair open circuit in harness between DMCM connector and high voltage battery cooling fan connector, or repair the intermediate connector.
3 CHECK HARNESS (SHORT TO POWER). Using a tester, measure the resistance between the high voltage battery cooling fan connector and other signal lines. Connector & terminal (R443) No. 21 - (R438) No. 4: (R443) No. 21 - (R443) No. 1 - 26: (R443) No. 21 - (R442) No. 1 - 22: (R443) No. 21 - (R436) No. 1 - 8: (R443) No. 22 - (R438) No. 4: (R443) No. 22 - (R443) No. 1 - 26: (R443) No. 22 - (R442) No. 1 - 22: (R443) No. 22 - (R436) No. 1 - 8:	Is the resistance 1 MΩ or more?	Go to step 4 .	Repair short circuit to power in harness between DMCM connector and high voltage battery cooling fan connector, or repair the intermediate connector.
4 CHECK DTC. Replace the high voltage battery cooling fan. < Ref. to HIGH VOLTAGE BATTERY COOLING SYSTEM .> Perform drive cycle H. < Ref. to DRIVE CYCLE H , PROCEDURE, Drive Cycle.>	Is the same DTC detected? (current malfunction)	Replace DMCM. < Ref. to appropriate DRIVE MOTOR CONTROL MODULE in Continuously Variable Transmission TH58A article.>	There is an abnormal condition in the high voltage battery cooling fan.