Subaru Legacy BN/BS (2015-2019) Service Manual: List of diagnostic trouble code (dtc) list
NOTE: If DTCs irrelevant to the immobilizer are detected, perform diagnosis according to the DTCs irrelevant to the immobilizer first. 1. ECM
2. BODY INTEGRATED UNIT NOTE: Except for C0 and C5 models
NOTE: The starter relay control is performed in immobilizer system. When the body integrated unit detects a nonconformity of reference code, it immediately outputs a starter relay cut signal to ECM, and then ECM stops the starter relay operation. In this case, engine does not start, and DTC is not recorded in ECM. Check that the engine does not start on the DTC of body integrated unit. 3. IMMOBILIZER CM NOTE: For C0 and C5 models
NOTE: The starter relay control is performed in immobilizer system. When the immobilizer CM detects a nonconformity of reference code, it immediately outputs a starter relay cut signal to ECM, and then ECM stops the starter relay operation. In this case, engine does not start, and DTC is not recorded in ECM. Therefore, check DTC for the immobilizer CM to identify the cause of the engine not starting. |
Inspection mode procedure
It is possible to diagnose the DTC by performing the indicated inspection mode. After correcting the DTC, perform a necessary inspection mode and make sure that the function is resumed correctly and t ...
Read diagnostic trouble code (dtc) operation
NOTE:• For detailed operation procedures, refer to “Application help”.• For details concerning DTC, refer to List of Diagnostic Trouble Code (DTC). List of Diagnostic Trouble ...
Other materials:
Dtc b278a push engine switch power supply circuit
DTC DETECTING CONDITION:When the power supply circuit of the push button ignition switch is shorted to ground.TROUBLE SYMPTOM:• Engine does not start even when the access key is pointed toward the vehicle.• The keyless access system function does not operate.CAUTION:For replacement proce ...
