IMMOBILIZER (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC DETECTING CONDITION:

Communication failure between key and body integrated unit

STEP	CHECK	YES	NO
1.CHECK BODY INTEGRATED UNIT FUNCTION. Insert the key into the ignition switch (LOCK position), then measure changes in voltage between the antenna connector and the chassis ground. Connector & terminal (B415) No. 1 (+) — Chassis ground (−):	Is the maximum voltage more than 40 V? (Approx. 0.1 second after inserting the key) Is the voltage 0 V? (Approx. 1 second after inserting the key)		Replace the body integrated unit Register all ignition keys (transponders). Refer to the “PC application help for Subaru Select Monitor”.
2.CHECK IGNITION KEY (TRANSPONDER). 1) Remove the key from ignition switch. 2) Start the engine using other key which is already registered.	Does the engine start?	Replace the ignition key (transponder). Execute the registration procedure next. Refer to the “PC application help for Subaru Select Monitor”.	Replace the body integrated unit Register all ignition keys (transponders). Refer to the “PC application help for Subaru Select Monitor”.