Cannot Lock With Keyless Access From The Driver's Door

Trouble causes:

Door lock control system failure
Door lock status switch circuit failure
Failure of harness between keyless access control module and front door outer handle
Keyless access control module failure
Front door outer handle failure

CAUTION:

Check that there are no other registered access keys inside the passenger room.
Check that the access key is not too close to the vehicle.
Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.
Check that the keyless access function is not stopped.
For replacement procedure of keyless access control module, refer to the "REGISTRATION INSTRUCTIONS FOR IMMOBILIZER" provided as a separate volume.
Before performing diagnosis, refer to "CAUTION" in "General Description". Refer to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .

CHECK DOOR LOCK SWITCH.
Check that the lock/unlock operates with the driver's door lock switch.

Does it lock/unlock normally?

Yes: Go to 2.

No: Check the door lock circuit. Refer to SECURITY AND LOCKS>DOOR LOCK CONTROL SYSTEM>INSPECTION>SYMPTOM CHART .
CHECK DATA MONITOR.
1. Using the Subaru Select Monitor, check the following items in «Data Monitor» of «Body Control». Refer to BODY CONTROL SYSTEM (DIAGNOSTICS)>READ CURRENT DATA .
  - «Driver's seat lock status SW input»
2. Read the data when locking/unlocking the driver's side lock actuator.
  Does the data change from ON/OFF?
  
  Yes: Go to 3.
  
  No: Check the door lock switch circuit.
CHECK DATA MONITOR.
1. Using the Subaru Select Monitor, check the following items on «Data monitor» of «Keyless Access with Push Button Start». Refer to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>DATA MONITOR .
  - «Driver's lock touch sensor SW»
2. Read the data when operating the touch sensor (lock) of the door outer handle.
  Does the data change from ON/OFF according to the sensor operation?
  
  Yes: Replace the keyless access control module. Refer to SECURITY AND LOCKS>KEYLESS ACCESS control module .
  
  No: Go to 4.
CHECK HARNESS (OPEN CIRCUIT).
1. Disconnect the keyless access control module connector.
2. Disconnect the front outer handle connector.
3. Using a tester, measure the resistance between the keyless access control module connector and front outer handle connector.
  Connector & terminal
  
  (B574) No. 5 - (D66) No. 4:
  
  (B574) No. 6 - (D66) No. 6:
  
  Is the resistance less than 1 Ω?
  
  Yes: Go to 5.
  
  No: Repair or replace the open circuit of harness.
CHECK HARNESS (GROUND SHORT CIRCUIT).
Using a tester, measure the resistance between the keyless access control module connector and chassis ground.

Connector & terminal

(B574) No. 6 - Chassis ground:

(B574) No. 5 - Chassis ground:

Is the resistance 10 kΩ or more?

Yes: Go to 6.

No: Repair or replace the short circuit of the harness.
REPLACE FRONT DOOR OUTER HANDLE.
Replace the driver's side front outer handle with the passenger's side front outer handle. Refer to SECURITY AND LOCKS>FRONT OUTER HANDLE .

Does it operate properly?

Yes: Replace the driver's side front outer handle. Refer to SECURITY AND LOCKS>FRONT OUTER HANDLE .

No: Replace the keyless access control module. Refer to SECURITY AND LOCKS>KEYLESS ACCESS control module .