Check Door Lock Actuator And Circuit

Wiring diagram:

Model without keyless access with push button start: keyless entry system Ref. to WIRING SYSTEM>KEYLESS ENTRY SYSTEM>WIRING DIAGRAM .
Model with the keyless access with push button start: keyless access with push button start system Ref. to WIRING SYSTEM>KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

Courtesy of SUBARU OF AMERICA, INC.

CHECK HARNESS (DOOR LOCK) .
1. Disconnect the body integrated unit and each door lock actuator connector.
2. Check the harness between body integrated unit and each door lock actuator.
  Connector & terminal
  
  Front door LH
  
  (i265) No. 6 - (D72) No. 4:
  
  Front door RH
  
  (i265) No. 7 - (D18) No. 4:
  
  Rear door LH
  
  (i266) No. 5 - (D26) No. 4:
  
  Rear door RH
  
  (i266) No. 4 - (D32) No. 4:
Is harness normal?

Yes: Go to 2.

No: Repair or replace the harness.
CHECK HARNESS (DOOR UNLOCK) .
Check the harness between body integrated unit and each door lock actuator.

Connector & terminal

Front door LH

(i84) No. 6 - (D72) No. 1:

Front door RH

(i265) No. 2 - (D18) No. 1:

Rear door LH

(i266) No. 9 - (D26) No. 1:

Rear door RH

(i265) No. 2 - (D32) No. 1:

Is harness normal?

Yes: Go to 3.

No: Repair or replace the harness.
CHECK HARNESS (REAR GATE UNLOCK) .
Check the harness between the body integrated unit and rear gate lock actuator.

Connector & terminal

(i266) No. 7 - (D46) No. 1:

Is harness normal?

Yes: Go to 4.

No: Repair or replace the harness.
CHECK HARNESS (REAR GATE UNLOCK) .
Measure the resistance between the rear gate lock actuator connector and chassis ground.

Connector & terminal

(D46) No. 2 - Chassis ground:

Is the resistance less than 10 Ω?

Yes: Go to 5.

No: Repair or replace the harness.
CHECK BODY INTEGRATED UNIT OUTPUT SIGNAL .
1. Connect the body integrated unit connector.
2. Measure the voltage between terminals of the body integrated unit when operating the door lock switch to LOCK direction.
  Connector & terminal
  
  Front door LH
  
  (i265) No. 6 (+)- (i84) No. 6 (-):
  
  Front door RH
  
  (i265) No. 7 (+)- (i265) No. 2 (-):
  
  Rear door LH
  
  (i266) No. 5 (+)- (i266) No. 9 (-):
  
  Rear door RH
  
  (i266) No. 4 (+)- (i265) No. 2 (-):
Does the voltage change from less than 1 V → 9 V or more? (During lock output)

Yes: Go to 6.

No: Replace the body integrated unit. Ref. to SECURITY AND LOCKS>BODY INTEGRATED UNIT .
CHECK BODY INTEGRATED UNIT OUTPUT SIGNAL .
Measure the voltage between terminals of the body integrated unit when operating the door lock switch to UNLOCK direction.

Connector & terminal

Front door LH

(i84) No. 6 (+)- (i265) No. 6 (-):

Front door RH

(i265) No. 2 (+)- (i265) No. 7 (-):

Rear door LH

(i266) No. 9 (+)- (i266) No. 5 (-):

Rear door RH

(i265) No. 2 (+)- (i266) No. 4 (-):

Does the voltage change from less than 1 V → 9 V or more? (During unlock output)

Yes: Go to 7.

No: Replace the body integrated unit. Ref. to SECURITY AND LOCKS>BODY INTEGRATED UNIT .
CHECK BODY INTEGRATED UNIT OUTPUT SIGNAL .
Measure the voltage between body integrated unit and chassis ground when operating the rear gate opener button.

Connector & terminal

(i266) No. 7 (+)- Chassis ground (-):

Does the voltage change from less than 1 V → 9 V or more? (During unlock output) Yes Go to 8.

No: Replace the body integrated unit. Ref. to SECURITY AND LOCKS>BODY INTEGRATED UNIT .
CHECK DOOR LOCK ACTUATOR .
Check the door lock actuator. Ref. to SECURITY AND LOCKS>DOOR LATCH & DOOR LOCK ACTUATOR ASSEMBLY>INSPECTION .

Is the door lock actuator OK?

Yes: Go to 9.

No: Replace the door latch and door lock actuator assembly.
CHECK REAR GATE LOCK ACTUATOR .
Check the rear gate lock actuator. Ref. to SECURITY AND LOCKS>REAR GATE LATCH AND ACTUATOR ASSEMBLY>INSPECTION .

Is the rear gate lock actuator normal?

Yes: Check the connection status of the harness and connector that may have a temporary poor contact.

No: Replace the rear gate latch and actuator assembly.