DTC Information: DTC Detecting Condition

Item	Detecting Condition	Possible Cause
DTC Strategy	Monitoring CAN messages	Poor connection CAN communication circuit (open, short) CAN high line open CAN low line open CAN high and low line open CAN high line short to 12V battery CAN low line short to 12V battery CAN high, low line short to each other CAN high, low line short to each other and short to ground Terminating resistance fault Transmitting controller bus off Transmitting controller disconnected Transmitting controller power, fuse or ground fault Transmitting controller H/W, S/W fault CAN line noise FR_RDR fault (CAN module fault) FR_CMR fault (CAN module fault)
Enable Condition	Ignition "ON" (ignition "ON" signal received more than 2s) Engine "ON" (engine "ON" signal received more than 2s) 12V battery voltage is between 9V and 16V CAN communication line in normal condition
Threshold Value	When FR_CMR CAN message has not been received from FR_CMR
Diagnosis Time	0.5s
Symptom	SCC disengagement and shutdown SCC warning lamp turns on FCA disengagement and shutdown FCA warning lamp turns on NSCC disabled NSCC USM disable HDA disengagement and shutdown HDA warning lamp turns on
Disable Condition	Normal FR_CMR L-CAN message received