Mirror Surface Moves Unexpectedly (Driver's Seat)

Trouble causes:

Short circuit to power supply in harness
Remote control mirror switch malfunction
Outer mirror assembly (driver's seat) malfunction
Outer mirror control module (driver's seat) malfunction

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to DOOR MIRROR (DIAGNOSTICS)>General Description>CAUTION .

CHECK DTC .
1. Turn the ignition switch to ON, and wait for 20 seconds or more.
2. Read the DTC of [Door Mirror (Driver)] using the Subaru Select Monitor. Ref. to Door Mirror (Diagnostics)>Diagnostic Trouble Code (DTC) .
  Are any DTCs displayed? (Current malfunction)
  
  Yes : Perform the diagnosis for the displayed DTCs. Ref. to Door Mirror (Diagnostics)>Diagnostic Trouble Code (DTC) .
  
  No : Go to 2 .
CHECK CONNECTOR CONNECTION .
1. Turn the ignition switch to OFF.
2. Check that the following connectors are properly connected. Repair the connector if any broken pin or poor mating is detected.
  - Remote control mirror switch connector
  - Outer mirror assembly (driver's seat) connector
  - Outer mirror control module (driver's seat) connector
3. Turn the ignition switch to ON.
4. Check that the faulty phenomenon is reproduced.
  Is the faulty phenomenon reproduced?
  
  Yes : Go to 3 .
  
  No : Since the poor contact of connector has repaired, the circuit condition returned to normal.
CHECK INPUT SIGNAL .
Using the Subaru Select Monitor, check the input signal on the [Data monitor] of [Door Mirror (Driver)]. Ref. to Door Mirror (Diagnostics)>Data Monitor .
- Mirror SW Input Status
Does the display change properly corresponding to the remote control mirror switch (mirror surface switch) operation?

Yes : Go to 6 .

No : Go to 4 .
CHECK REMOTE CONTROL MIRROR SWITCH .
Check remote control mirror switch unit. Ref. to GLASS/WINDOW/MIRRORS>REMOTE CONTROL MIRROR SWITCH .

Is the remote control mirror switch OK?

Yes : Go to 5 .

No : Replace the remote control mirror switch. Ref. to GLASS/WINDOW/MIRRORS>REMOTE CONTROL MIRROR SWITCH .
CHECK HARNESS (SHORT CIRCUIT TO POWER SUPPLY) .
1. Turn the ignition switch to OFF.
2. Disconnect the outer mirror control module (driver's seat) connector.
3. Disconnect the remote control mirror switch connector.
4. Turn the ignition switch to ON.
5. Using a tester, measure the voltage between outer mirror control module (driver's seat) connector and chassis ground.
  Connector and terminal
  
  (Df21) No. 8 (+) - Chassis ground (-):
  
  (Df21) No. 11 (+) - Chassis ground (-):
  
  (Df21) No. 12 (+) - Chassis ground (-):
  
  Is the voltage less than 1 V?
  
  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 power supply between outer mirror control module (driver's seat) connector and remote control mirror switch connector.
CHECK OUTPUT SIGNAL .
Using the Subaru Select Monitor, check the output signal on the [Data monitor] of [Door Mirror (Driver)]. Ref. to Door Mirror (Diagnostics)>Data Monitor .
- Mirror Vertical Output Direction
- Mirror Horizontal Output Direction
Does the display change properly corresponding to the remote control mirror switch (mirror surface switch) operation?

Yes : Go to 7 .

No : Replace the outer mirror control module (driver's seat). Ref. to GLASS/WINDOW/MIRRORS>OUTER MIRROR CONTROL MODULE .
CHECK OUTER MIRROR ASSEMBLY (DRIVER'S SEAT) UNIT .
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 following points.
  - Check up/down/right/left operations of mirror surface motor.
    Connector and terminal
    
    Up
    
    No. 7 (+) - No. 6 (-):
    
    Down
    
    No. 7 (-) - No. 6 (+):
    
    Right
    
    No. 7 (+) - No. 8 (-):
    
    Left
    
    No. 7 (-) - No. 8 (+):
  Is the outer mirror assembly (driver's seat) OK?
  
  Yes : Go to 8 .
  
  No : Replace the outer mirror assembly (driver's seat). Ref. to GLASS/WINDOW/MIRRORS>OUTER MIRROR ASSEMBLY .
CHECK HARNESS (SHORT CIRCUIT TO POWER SUPPLY) .
1. Turn the ignition switch to OFF.
2. Disconnect the outer mirror control module (driver's seat) connector.
3. Disconnect the outer mirror assembly (driver's seat) connector.
4. Turn the ignition switch to ON.
5. Using a tester, measure the voltage between outer mirror control module (driver's seat) connector and chassis ground.
  Connector and terminal
  
  (Df22) No. 6 (+) - Chassis ground (-):
  
  (Df22) No. 7 (+) - Chassis ground (-):
  
  (Df22) No. 8 (+) - Chassis ground (-):
  
  Is the voltage less than 1 V?
  
  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 power supply between outer mirror control module (driver's seat) connector and outer mirror assembly (driver's seat) connector.