Loss of Communication DTC cross-reference chart

When an ECU on the CAN circuit is unable to communicate with other ECUs on the CAN circuit, one or more of the control units will set a loss of communications DTC. Use this chart to find the control unit that is not communicating.

1. Find the Transmitting Control Unit that is in the same row as all of the loss of communication DTCs retrieved.
2. Do the input test for the transmitting control unit.

   BUS OFF and Internal Error Codes 

   DTC CHART
   
   

   DTC type	Related Unit
   	MICU	Gauge Control Module	Immobllizer-Keyless Control Unit	Climate Control Unit
   BUS OFF	B1000	B1150	B1900	B1200
   ECU (CPU) Error	B1001
   ECU (EEPROM) Error	B1002	B1152		B1202

   CLIMATE CONTROL UNIT CHART
   
   

   Transmitting Control Unit	Message	Receiving Unit/Loss of Communication DTC
   		MICU	Gauge Control Module	Immobilizer-Keyless Control Unit	Climate Control Unit
   MICU	RM		B1188
   	HLSW		B1155
   	WIPSW		B1156
   	MICU		B1157
   	DOORSW		B1159
   	DRLOCKSW		B1160	B1905
   Gauge Control Module	VSP/NE	B1011			B1205
   	ATT	B1008		B1906
   	CDS (SRS)	B1032
   	ECT				B1206
   ECM/PCM	ENG		B1168
   	A/T		B1169
   ABS or VSA modulator-control unit	ABS or VSA		B1170
   EPS Control unit	EPS		B1183
   SRS	SRS		B1187