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Check Door Key Cylinder Switch And Circuit

WARNING: This page is about a different car, the 2006 Subaru Outback and 2006 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
DOOR KEY CYLINDER SWITCH AND CIRCUIT CHECKING PROCEDURE CHART

Step Check Yes No
1 CHECK DOOR KEY CYLINDER SWITCH CIRCUIT. 
Measure the resistance between the harness connector terminal and chassis ground when moving the door key cylinder switch to UNLOCK.
Connector & terminal 
(i84) No. 12 - Chassis ground: 		 Is the resistance less than 10 Ω? Door key cylinder switch is OK. Go to step 2. 
2 CHECK DOOR KEY CYLINDER SWITCH. 
  1. Disconnect the door key cylinder switch harness connector.
  2. Measure the resistance between door key cylinder switch terminals when turning the door key cylinder switch to LOCK.

    Terminals 

    No. 1 - No. 2: 

 Is the resistance less than 1 Ω? Go to step 3.  Replace the door key cylinder switch.
3 CHECK DOOR KEY CYLINDER SWITCH. 
Measure the resistance between the door key cylinder switch terminals when turning the door key cylinder switch to UNLOCK.
Terminals 
No. 2 - No. 3: 		 Is the resistance less than 1 Ω? Check the harness for open or short circuits between the body integrated unit and the door key cylinder switch. Replace the door key cylinder switch.
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