General Information

Power Distribution Module
B1989 ESCL Ground Short Circuit To Battery - General Information

Component Location





General Description

All 13 units which consists of the Body Electrical Control System are linked by CAN* line.
They are IPM(Inter Panel Module), FAM(Front Area Module), PDM(Power Distribution Module), DDM(Drive Door Module), ADM(Assist Door Module), ECW(Electronic Control Wiper), CLU(Cluster), MFSW(Multi Function Switch), PSM(Power Seat Module), SCM(Steering Control Module), PTM(Power Trunk Lid Module), FBWS(Front Back Warning System), DATC(Dual Auto Temperature Control Module).
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 ground 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(VOLT UNLOCK STATE)
Fig.2) ESCL Data Signal Waveform(VOLT LOCK STATE)