B1207

DTC B1207 Certification ECU Communication Malfunction

DESCRIPTION

DTC Detection Condition:

The main body ECU will store this DTC when no signals can be received from the certification ECU while the CAN MS main bus is normal.

Wiring Diagram:

Step 1-2:

Step 3:

INSPECTION PROCEDURE

NOTE:
- Turn the engine switch off before measuring the resistances of CAN bus main wires and CAN bus branch wires.
- After the engine switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
- Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, any other switches, or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.

HINT: Operating the engine switch, any switches, or any doors triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.