DTC B1631 Rear Vent Door Actuator Potentiometer Circuit Short: Wiring Diagram

Air Conditioning System. See appropriate SYSTEM WIRING DIAGRAM article.

Fig 1: Rear Vent Door Actuator - Wiring Diagram

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Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK CONNECTOR. Check the condition of connector connection. Read the DTC using Subaru Select Monitor.	Is B1631 displayed?	Go to step 2 .	Repair the poor contact of connector.
2 CHECK ACTUATOR. Disconnect the rear vent door actuator. Read the DTC using Subaru Select Monitor.	Is B1631 displayed?	Replace the rear vent door actuator. Refer to REMOVAL .	Go to step 3 .
3 CHECK HARNESS. Using a tester, check continuity between terminals. Connector & terminal (i177) No. 5 - (i177) No. 1: (i177) No. 5 - Chassis ground:	Is there continuity?	Repair or replace the short circuit of the harness.	Replace the A/C CM. Refer to REMOVAL .