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Check Door Lock Actuator And Circuit

Step Check Yes No
1 CHECK HARNESS (DOOR LOCK). 
  1. Disconnect the body integrated unit connector and each door lock actuator.
  2. Check the harness between body integrated unit connector and each door lock actuator connector.

    Connector & terminal 

    Front door RH 

    (i171) No. 2 - (D72) No. 1: 

    Front door LH 

    (i171) No. 2 - (D18) No. 1: 

    Rear door RH 

    (i171) No. 2 - (D32) No. 1: 

    Rear door LH 

    (i171) No. 2 - (D26) No. 1: 

Is harness normal? Go to step 2.  Repair or replace the harness.
2 CHECK HARNESS (DOOR UNLOCK). 
Check the harness between body integrated unit connector and each door lock actuator connector.
Connector & terminal 
Front door RH 
(i171) No. 3 - (D72) No. 2: 
Front door LH 
(i171) No. 4 - (D18) No. 2: 
Rear door RH 
(i171) No. 3 - (D32) No. 2: 
Rear door LH 
(i171) No. 3 - (D26) No. 2: 
Is harness normal? OUTBACK model Go to step .
Sedan model: Go to step 5. 
Repair or replace the harness.
3 CHECK HARNESS (REAR GATE UNLOCK). 
Check the harness between body integrated unit connector and rear gate lock actuator connector.
Connector & terminal 
(i171) No. 7 - (D47) No. 1: 
Is harness normal? Go to step 4.  Repair or replace the harness.
4 CHECK HARNESS (REAR GATE UNLOCK). 
Measure the resistance between the rear gate lock actuator connector and chassis ground.
Connector & terminal 
(D47) No. 2 - Chassis ground: 
Is the resistance less than 10 Ω? Go to step 7.  Repair or replace the harness.
5 CHECK HARNESS (TRUNK UNLOCK). 
Check the harness between body integrated unit connector and trunk lid lock actuator connector.
Connector & terminal 
(i171) No. 7 - (R186) No. 1: 
Is harness normal? Go to step 6.  Repair or replace the harness.
6 CHECK HARNESS (TRUNK UNLOCK). 
Measure the resistance between the trunk lid lock actuator connector and chassis ground.
Connector & terminal 
(R186) No. 2 - Chassis ground: 
Is the resistance less than 10 Ω? Go to step 7.  Repair or replace the harness.
7 CHECK BODY INTEGRATED UNIT OUTPUT SIGNAL. 
  1. Connect the body integrated unit connector.
  2. Measure the voltage between the terminals of the body integrated unit connector when operating the door lock switch to LOCK direction.

    Connector & terminal 

    Except for front door LH 

    (i171) No. 2 (+) - (i171) No. 3 (-): 

    Front door LH 

    (i171) No. 2 (+) - (i171) No. 4 (-): 

Does the voltage change from less than 1 V → 9 V or more? (During lock output) Go to step 8.  Replace the body integrated unit. Refer to , BODY INTEGRATED UNIT .
8 CHECK BODY INTEGRATED UNIT OUTPUT SIGNAL. 
Measure the voltage between the terminals of the body integrated unit connector when operating the door lock switch to UNLOCK direction.
Connector & terminal 
Except for front door LH 
(i171) No. 3 (+) - (i171) No. 2 (-): 
Front door LH 
(i171) No. 4 (+) - (i171) No. 2 (-): 
Does the voltage change from less than 1 V → 9 V or more? (During unlock output) Go to step 9.  Replace the body integrated unit. Refer to , BODY INTEGRATED UNIT .
9 CHECK BODY INTEGRATED UNIT OUTPUT SIGNAL. 
Measure the voltage between body integrated unit connector and chassis ground when operating the rear gate/trunk opener button.
Connector & terminal 
(i171) No. 7 (+) - Chassis ground (-): 
Does the voltage change from less than 1 V → 9 V or more? (During unlock output) Go to step 10.  Replace the body integrated unit. Refer to , BODY INTEGRATED UNIT .
10 CHECK DOOR LOCK ACTUATOR. 
Check the door lock actuator.
  • Front door lock actuator: Refer to , INSPECTION , Front Door Latch and Door Lock Actuator Assembly.
  • Rear door lock actuator: Refer to , INSPECTION , Rear Door Latch and Door Lock Actuator Assembly.
Is the door lock actuator OK? OUTBACK model Go to step 11  .
Sedan model: Go to step 12. 
Replace the door latch and door lock actuator assembly.
11 CHECK REAR GATE LOCK ACTUATOR. 
Check the rear gate lock actuator. Refer to , REAR GATE LATCH AND ACTUATOR ASSEMBLY .
Is the rear gate lock actuator normal? Check the connection status of the harness and connector that may have a temporary poor contact. Replace the rear gate latch and actuator assembly.
12 CHECK TRUNK LID LOCK ACTUATOR. 
Check the trunk lid lock actuator. Refer to , TRUNK LID LATCH AND ACTUATOR ASSEMBLY .
Is trunk lid lock actuator normal? Check the connection status of the harness and connector that may have a temporary poor contact. Replace the trunk lid latch & actuator assembly.