Component Location
General Description

This DTC sets when a communication error between SJB and other control units occur.

※ Body CAN communication Control Units : BCM(Body Control Module), CLU(Cluster), SMK(Smart Key), SJB(Smart Junction Box), PSM(Power Seat Module).

CAN (Controller Area Network) : CAN is a serial bus type communication which links control units.

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 BCM can't receive data from SJB by CAN Line for 10 sec.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

•

CAN Comm. Check (BCM ↔ SJB)

1.

IG ON

(1)

No receiving CAN Data owing to BUS OFF(Check CAN BUS ERROR DTC is being.)

(2)

BCM CAN High/Low Lines open together

(3)

Check SJB(Including the related fuses)

(4)

SJB CAN High/Low Lines open

Enable Conditions

•

BCM power on

Threshold Value

•

No message from SJB to BCM for 6 sec.

Diagnostic Time

•

10 sec

DTC Erasing Time

•

DTC is erased immediately after receiving data from FAM.

Diagnostic Circuit Diagram
Signal Waveform & Data

Fig.1) CAN Low/High Signal Waveform

Fig.2) CAN BUS VOLTAGE LEVEL (LOW SPEED CAN)

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