Sedan

B2193, P1612 CHAIN OF ECM-IMMU

Description
BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK. ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if ignition switch is turned ON.

DTC Logic

DTC Detection Logic

NOTE:
- If DTC B2193 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-207, "DTC Logic". Sedan
- If DTC B2193 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-208, "DTC Logic". Sedan

DTC Confirmation Procedure

Step 1:

Diagnostic Procedure