General Information

Power Distribution Module
B1991 Immobilizer TX Short Circuit To Ground - General Information

Component Location





General Description

The body electrical system is comprised of four ECU applied CAN* communication nodes.
** Body CAN communication Control Units : BCM(Body Control Module), CLU(Cluster), PDM(Power Distribution Module), SMK(Smart Key), RPAS(Rear Parking Assist System).
** LIN communication Control Units : IPM(Intelligent integrated Platform Module), DDM(Drive Door Module), ADM(Assist Door Module), IMS(Integrated Memory System-PSM.
* CAN(Controller Area Network) : CAN is serial bus communication type which links not only communication system but also control units each other.
*2 LIN(Local Interconnect Network) : LIN is serial communication type which is used in electrical control system. (This is less expensive.)
After insert the fob into the fob holder, press SSB button. Then, the communication state between the fob and the immobilizer is inputted to PDM.






DTC Description

This code is outputted when the immobilizer data circuit is shorted to ground.
(In this case, it is not possible to get authorization although the fob is in the holder.)

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data




Fig.1) IMMO_CLOCK & IMMO_DATA signal waveform