Cannot Lock With Keyless Access From The Driver's Door

Trouble causes:

Malfunction of door lock control system
Door lock switch circuit malfunction
Malfunction of harness between keyless access Control Module and front door outer handle
Keyless access Control Module malfunction
Malfunction of front door outer handle

CAUTION:

Check that there are no other registered access keys inside 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.
When the access key or keyless access Control Module is replaced, registration of the immobilizer is required. For the relevant procedures, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.
Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (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. Ref. 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 the [Data Monitor] of [Body Control]. Ref. to BODY CONTROL (DIAGNOSTICS)>DATA MONITOR .
  - [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 in the [Data Monitor] of [Keyless Access with Push Button Start]. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>DATA MONITOR .
- [Driver's lock touch sensor SW]
Does the data change from ON/OFF according to the sensor operation?

Yes : Replace the keyless access Control Module. Ref. 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 and terminal
  
  (i241) No. 6 - (D66) No. 6:
  
  (i241) No. 5 - (D66) No. 4:
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 and terminal

(i241) No. 6 - Chassis ground:

(i241) 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. Ref. to SECURITY AND LOCKS>DOOR OUTER HANDLE .

Does it operate properly?

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

No : Replace the keyless access Control Module. Ref. to SECURITY AND LOCKS>KEYLESS ACCESS CONTROL MODULE .