Component Location
General Description
All 13 units which consists of the Body Electrical Control System are linked by CAN*¹ 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).
*¹ 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 IPM can't receive data from ECW by CAN Line for 10 sec.
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | CAN Comm. Check (IPM ? ECW)
| IG ON 1. No receiving CAN Data owing to BUS OFF (Check CAN BUS ERROR DTC is being.) 2. IPM CAN High/Low Lines open together 3. Check ECW (Including the related fuses) 4. ECW CAN High/Low Lines open
|
Enable Conditions | IPM power on
|
Threshold Value | No message from ECW to IPM for 10 sec.
|
Diagnostic Time | 10 sec
|
DTC Erasing Time | DTC is erased immediately after receiving data from ECW.
|
Diagnostic Circuit Diagram
Signal Waveform & Data
Fig.1) CAN Low/High Signal Waveform
Fig.2) CAN BUS VOLTAGE LEVEL (LOW SPEED CAN)