PASSENGER's SIDE POWER WINDOW DOES NOT WORK

Trouble causes: 

• Front regulator and motor assembly (passenger's side) power supply circuit failure
• Front regulator and motor assembly (passenger's side) failure
• Power window main switch failure
• Power window sub-switch malfunction
• LIN communication error
• Body integrated unit malfunction

Wiring diagram: 

Power window system Ref. to WIRING SYSTEM>POWER WINDOW SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK BATTERY  .

   Check the battery. Ref. to STARTING/CHARGING SYSTEMS (H4DO)>BATTERY . Ref. to STARTING/CHARGING SYSTEMS (H4DOTC)>BATTERY .

   Is the battery OK?

   Yes:  Go to  2 .

   No:  Charge or replace the battery.

2. CHECK DTC  .

   Read the DTC of [Power Window (Passenger)] using the Subaru Select Monitor. Ref. to Power Window (Diagnostics)>Diagnostic Trouble Code (DTC) .

   Are any DTCs displayed? (Current malfunction)

   Yes:  Perform the diagnosis for the displayed DTCs. Ref. to POWER WINDOW (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST .

   No:  Go to  3 .

3. CHECK [Window Lock Switch Signal] (DATA MONITOR)  .
   1. Turn the ignition switch to ON.
   2. Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Power Window (Passenger)]. Ref. to Power Window (Diagnostics)>Data Monitor .
   • Window Lock Switch Signal

   Is [Unlock] displayed?

   Yes:  Go to  4 .

   No:  Unlock the window lock to operate.

4. CHECK [Power Supply Voltage] (DATA MONITOR)  .
   1. Turn the ignition switch to ON.
   2. Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Power Window (Passenger)]. Ref. to Power Window (Diagnostics)>Data Monitor .
   • Power Supply Voltage

   Is the displayed voltage approximately 10.0 [V] or more?

   Yes:  Go to  5 .

   No:  Replace the front regulator and motor assembly (passenger's side). Ref. to GLASS/WINDOW/MIRRORS>FRONT REGULATOR AND MOTOR ASSEMBLY .

5. CHECK [Operation Enable Signal] (DATA MONITOR)  .

   Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Power Window (Passenger)]. Ref. to Power Window (Diagnostics)>Data Monitor .

   • Operation Enable Signal

   Is [ON] displayed?

   Yes:  Go to  6 .

   No:  Inspect the body integrated unit. Ref. to BODY CONTROL (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .

   If no fault is found in the body integrated unit, replace the front regulator and motor assembly (passenger's side). Ref. to GLASS/WINDOW/MIRRORS>FRONT REGULATOR AND MOTOR ASSEMBLY .

6. CHECK POWER WINDOW SUB-SWITCH  .

   Perform unit inspection of power window sub switch. Ref. to GLASS/WINDOW/MIRRORS>POWER WINDOW CONTROL SWITCH .

   Is the power window sub-switch OK?

   Yes:  Go to  7 .

   No:  Replace the power window sub-switch. Ref. to GLASS/WINDOW/MIRRORS>POWER WINDOW CONTROL SWITCH .

7. CHECK HARNESS (OPEN CIRCUIT)  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the power window sub-switch connector.
   3. Disconnect the front regulator and motor assembly (passenger's side) connector.
   4. Using a tester, measure the resistance between power window sub-switch and front regulator and motor assembly (passenger's side) connectors.

      Connector and terminal 

      (Df35) No. 1 - (Df51) No. 4:

      (Df35) No. 5 - (Df51) No. 6:

      (Df35) No. 6 - (Df51) No. 8:

   Is the resistance less than 1 Ω?

   Yes:  Replace the front regulator and motor assembly (passenger's side). Ref. to GLASS/WINDOW/MIRRORS>FRONT REGULATOR AND MOTOR ASSEMBLY .

   No:  Repair the open circuit of the harness between power window sub-switch and front regulator and motor assembly (passenger's side) connectors.