DTC B2630: Electric Folding Mirror D Motor Circuit Anomalous State

DTC detecting condition: 

• When the electric retraction driver circuit detects overcurrent (8 A or more).
• When the electric retraction driver circuit detects overheat.
• When a communication (ECM internal signal) error in the electric retraction driver circuit is detected.

  Trouble symptom: 

  The following functions do not operate.

• Manual electric retraction function (driver's seat)
• Automatic electric retraction function (driver's seat)

Wiring diagram: 

Remote control mirror system Ref. to WIRING SYSTEM>REMOTE CONTROL MIRROR SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK DTC  .
   1. Turn the ignition switch to ON.
   2. Read the DTC of [Door Mirror (Driver)] using the Subaru Select Monitor. Ref. to Door Mirror (Diagnostics)>Diagnostic Trouble Code (DTC) .

      Is DTC B2630 displayed? (Current malfunction)

      Yes  : Go to  2 .

      No  : Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and 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 OUTER MIRROR ASSEMBLY (DRIVER'S SEAT)  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the outer mirror assembly (driver's seat) connector (Df56).
   3. Apply battery voltage between outer mirror assembly (driver's seat) connector terminals, and check the retraction/extension operations of the electric retraction motor.

      Connector and terminal 

      Retraction 

      No. 3 (+) - No. 4 (-):

      Extension 

      No. 3 (-) - No. 4 (+):

      Is the outer mirror assembly (driver's seat) retracted/extended?

      Yes  : Go to  3 .

      No  : Replace the outer mirror assembly (driver's seat). Ref. to GLASS/WINDOW/MIRRORS>OUTER MIRROR ASSEMBLY .

3. CHECK HARNESS (SHORT CIRCUIT TO POWER SUPPLY)  .
   1. Disconnect the outer mirror control module (driver's seat) connector.
   2. Turn the ignition switch to ON.
   3. Using a tester, measure the voltage between outer mirror control module (driver's seat) connector and chassis ground.

      Connector and terminal 

      (Df22) No. 15 (+) - Chassis ground (-):

      (Df22) No. 16 (+) - Chassis ground (-):

      Is the voltage less than 1 V?

      Yes  : Go to  4 .

      No  : Repair the short circuit to power supply in harness between outer mirror control module (driver's seat) connector and outer mirror assembly (driver's seat) connector.

4. CHECK HARNESS (GROUND SHORT CIRCUIT)  .
   1. Turn the ignition switch to OFF.
   2. Using a tester, measure the resistance between outer mirror control module (driver's seat) connector and chassis ground.

      Connector and terminal 

      (Df22) No. 15 - Chassis ground:

      (Df22) No. 16 - Chassis ground:

      Is the resistance 1 MΩ or more?

      Yes  : Replace the outer mirror control module (driver's seat). Ref. to GLASS/WINDOW/MIRRORS>OUTER MIRROR CONTROL MODULE .

      No  : Repair the short circuit to ground in harness between outer mirror control module (driver's seat) connector and outer mirror assembly (driver's seat) connector.