General Information

Power Distribution Module
B1988 ESCL Battery Short Circuit To Battery - General Information

Component Location





General Description

The body electrical system is comprised of four ECU applied CAN* communication nodes.
** Control Units : BCM(Body Control Module), PDM(Power Distribution Module), SMK(Smart Key) ECU.
The steering wheel lock/unlock state of ESCL and the required data when EMS(Engine Management System)controls starting are sent to PDM by the serial communication line.
* 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.)






DTC Description

This code is outputted when power circuit is shorted to battery.
(During no power supply from PDM to ESCL)

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data




Fig.1) ESCL Data Signal Waveform