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Access Key Lockout Protection Function In The Trunk Does Not Operate

CAUTION:
  • 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.
Step Check Yes No
1 CHECK TRUNK OPENER BUTTON. 
Check that the trunk opens with the driver's seat trunk opener button.		 Does it open normally? Go to step 2  . Check the door lock circuit. <Ref. to INSPECTION , Door Lock Control System.>
2 CHECK KEYLESS OPERATION. 
Check that the trunk opens when the trunk opener button of the access key is operated.		 Does it open normally? Go to step 7  . Go to step 3.
3 CHECK TRUNK UNLOCK OPERATION. 
  1. Using the Subaru Select Monitor, select the function check «R gate/trunk UNLK output» under «Body Control». <Ref. to Function Check .>
  2. Check that the trunk opens when the R gate/trunk UNLK signal is output.
 Does it open normally? Go to step 7  . Go to step 4.
4 CHECK WIRING HARNESS (OPEN). 
  1. Disconnect the body integrated unit connector and trunk lid lock actuator connector.
  2. Check the continuity between body integrated unit connector and trunk lid lock actuator connector.

Connector & terminal 
(i171) No. 7 - (R186) No. 1: 		 Is there continuity? Go to step 5  . Repair or replace the open circuit of harness.
5 CHECK WIRING HARNESS (OPEN). 
Check the continuity between the trunk lid lock actuator connector and chassis ground.
Connector & terminal 
(R186) No. 2 - Chassis ground: 		 Is there continuity? Go to step 6  . Repair or replace the open circuit of harness.
6 CHECK TRUNK LID LOCK ACTUATOR. 
Check the trunk lid lock actuator. <Ref. to Trunk Lid Latch and Actuator Assembly .>		 Is the check result OK? Replace the body integrated unit. <Ref. to Body Integrated Unit .> Replace the trunk lid latch & actuator assembly. <Ref. to Trunk Lid Latch and Actuator Assembly .>
7 CHECK ACCESS KEY. 
  1. Prepare all access keys registered to the vehicle.
  2. Check that the trunk opens with each access key.
 Does it open normally? Go to step 8  . Replace the access key. <Ref. to REPLACEMENT , Access Key.>
8 CHECK WIRING HARNESS (OPEN). 
  1. Disconnect the interior rear antenna connector and the Keyless Access Control Module connector.
  2. Using a tester, check continuity between the interior rear antenna connector and Keyless Access Control Module connector.

Connector & terminal 
(R297) No. 1 - (B573) No. 9: 
(R297) No. 3 - (B573) No. 8: 		 Is there continuity? Go to step 9  . Repair or replace the open circuit of harness.
9 CHECK PASSENGER ROOM REAR ANTENNA. 
Replace the passenger room rear antenna with a new or properly functioning part. <Ref. to REMOVAL , Keyless Access Indoor Antenna.>		 Does it operate properly? Replace the passenger room rear antenna. <Ref. to REMOVAL , Keyless Access Indoor Antenna.> Go to step 10  .
10 CHECK RECEIVER. 
Replace the receiver with a new or properly functioning part. <Ref. to REMOVAL , Receiver.>		 Does it operate properly? Replace the receiver. <Ref. to REMOVAL , Receiver.> Go to step 11  .
11 CHECK WIRING HARNESS (OPEN). 
  1. Disconnect the receiver connector and the Keyless Access Control Module connector.
  2. Using a tester, check continuity between the receiver connector and Keyless Access Control Module connector.

Connector & terminal 
(R296) No. 4 - (B573) No. 5: 
(R296) No. 5 - (B573) No. 17: 
(R296) No. 2 - (B573) No. 19: 		 Is there continuity? Go to step 12  . Repair or replace the open circuit of harness.
12 CHECK KEYLESS ACCESS SYSTEM CHECK. 
  1. Using the Subaru Select Monitor, select the system check «Trunk internal transmitter + interior tuner» under «Keyless Access with Push Button Start». <Ref. to KEYLESS ACCESS SYSTEM CHECK .>
  2. Hold the access key 1 m or more away from the center of inside the trunk, then come closer to within 0.8 m.
 Does the outside buzzer sound? The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
 Replace the Keyless Access Control Module. <Ref. to REMOVAL , Keyless Access Control Module.>
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