General Information

B1991 Immobilizer TX Short Circuit To Ground

General Information

Component Location





General Description

Each control module such as BCM (Body Control Module), Cluster (CLU:Cluster), SMK (Smart key Module), SJB (Smart Junction Box), PSM (Power Seat Module) is connected each other with Body CAN*. Each Control Unit (Module) consists of Low and High Line.
* CAN (Controller Area Network) : CAN is serial bus communication type which links not only communication system but also control units each other.
The Fob holder has the / SW which recognizes an insertion between Immo. Antenna and Fob key for the TP Communications. it makes to possible that you could proceed to make an emergency start when the vehicle's battery is discharged from the discommunications of a LF signal.






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