KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC B2204 ABNORMAL STEERING LOCK POWER SUPPLY CIRCUIT (ABNORMALITY ON THE POWER SUPPLY ECM SIDE)

DTC DETECTING CONDITION:

Faulty steering lock motor drive circuit

TROUBLE SYMPTOM:

• The steering lock cannot be released.

• Engine will not start.

WIRING DIAGRAM:

STEP	CHECK	YES	NO
1.CHECK DTC. Connect the Subaru Select Monitor and read DTCs.	Is a DTC B2201 displayed?	Perform the diagnosis according to displayed DTC.
2.CHECK CURRENT DATA. Confirm the collation CM current data «IGN1 (communication)» when connecting the Subaru Select Monitor, and turning the ignition OFF → ON.	Does the data change from OFF → ON?		Perform the check of the keyless access system.
3.CHECK STEERING LOCK CM. Using a tester, measure the voltage between the steering lock CM terminals when the ignition is turned to OFF.	Is the voltage less than 1 V?		Repair or replace the short circuit of the harness.
4.CHECK STEERING LOCK CM. Using a tester, measure the voltage between the steering lock CM terminals when the ignition is turned from OFF to ON.	Did the voltage change from less than 1 V to 8 V or more?	Replace the steering lock CM.	Repair or replace the open circuit of harness.