CAN Communication is a circuit, consists of CAN LOW and CAN HIGH, in order to communicate among control units.
Control Modules are respectively communicating via CAN line in order to control Body Electrical.
Smart Key module sets DTC B1689 if Smartkey Module have not received CAN signal from PDM for 3 sec.
Item
Detecting Condition
Possible cause
DTC Strategy
CAN signal check
Poor Connection
Power source to Smart Key module
Power source to PDM
Short to battery in CAN communication line
Short to ground in CAN communication line
Short between CAN HIGH AND LOW communication line each other
Faulty Smartkey Module
Faulty PDM
Enable Conditions
IG ON
Threshold value
No can signal message from PDM for 3 sec.
Failsafe
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