Genesis COUPE BK 2010, Manual

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The TCM can either receive data from the Engine Control Module or ABS control module, or it can send data to the ECM and
ABSCM by using CAN communication. The CAN communicaton is one of the vehicle communications method, which is now
widely used to transfer the vehicle data.
The TCM reads data on the CAN-BUS line and checks whether the data is equal to the data which the TCM sentbefore. If the
data is not the same the TCM decides that either the CAN-BUS line or TCM are malfuncting and sets this code.
GENESIS COUPE(BK) >2010 > G 2.0 DOHC > Automatic Transmission System > Automatic
Transmission System > U0001 High Speed CAN Communication Bus off
Component Location
General Description
DTC Description
DTC Detectiong Condition
Item Detecting Condition Possible Cause
DTC Strategy • Message Check
• Open or short in CAN line
• Faulty ECM
• Faulty TCM
Enable Conditions
• IG "ON"
• Battery Voltage > 10V
• Input Speed > 300rpm
Threshold Value • Status of CAN chip BUS OFF
Diagnostic Time • More than 2sec.
Fail Safe • Default value
Diagnostic Circuit Diagram