Can Bus Diagnostics Table

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CAUTION: A diagnosis code may not also be set in the CAN-B lines under the conditions below. If no diagnosis code has been set due to electrical noise, confirm diagnosis item 28 DIAGNOSTIC ITEM 28: SHORT TO POWER SUPPLY OR GROUND, OPEN CIRCUIT OR LINE-TO-LINE SHORT IN THE CAN-B BUS LINES .

Open circuit at the CAN_H side of the CAN-B bus lines
Open circuit at the CAN_L side of the CAN-B bus line
Short to ground at the CAN_H side of the CAN-B bus line

CAUTION: During diagnosis, a diagnosis code associated with another system may be set when the ignition switch is turned on with connector(s) disconnected. After completing the repair, confirm all systems for diagnosis code(s). If diagnosis code(s) are set, erase them all.

This diagnosis applies only to the CAN bus lines. If a different system is defective, proceed to the applicable diagnosis section for each system. Observe the diagnosis procedure below only when the CAN bus line is defective.

SCAN TOOL REFERENCE

Scan tool screen (The ECUs that are not adopted are not displayed.)		Diagnosis detail	Reference
	Comment	Diagnosis detail	Reference
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Short circuit to battery in red displayed area is estimated.	DIAGNOSIS ITEM 1 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY ETACS-ECU.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Grounding in red displayed area is estimated.	DIAGNOSIS ITEM 2 MALFUNCTION OF THE ETACS-ECU.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-C: A bus-off failure is present in the gateway ECU.	DIAGNOSIS ITEM 3 ABNORMAL SHORT BETWEEN THE CAN-C BUS LINES.
	CAN-C: Grounding in red displayed area is estimated	DIAGNOSIS ITEM 4 DIAGNOSE SHORTS IN THE GROUND TO CAN-C BUS LINE.
	CAN-C: Short circuit to battery in red displayed area is estimated	DIAGNOSIS ITEM 5 DIAGNOSE SHORTS IN THE POWER SUPPLY TO CAN-C BUS LINE.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-C: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 6 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY STEERING WHEEL SENSOR.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-C: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 7 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY AWC-ECU. <RALLIART>
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-C: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 8 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY ASC-ECU.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-C: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 9 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY SHIFT LEVER. <RALLIART>
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-C: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 10 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY TCM. <CVT>
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-C: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 11 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY TRANSAXLE ASSEMBLY (TC-SST-ECU). <RALLIART>
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-C: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 12 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY ECM.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-C: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 13 DIAGNOSE THE LINES BETWEEN THE ETACS-ECU AND JOINT CONNECTOR (CAN2).
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-C: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 14 DIAGNOSE THE LINES BETWEEN JOINT CONNECTOR (CAN2) AND JOINT CONNECTOR (CAN3).
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-C: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 15 DIAGNOSE THE LINES BETWEEN JOINT CONNECTOR (CAN3) AND JOINT CONNECTOR (CAN4). <RALLIART>
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 16 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY KOS-ECU. <VEHICLES WITH KOS>
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 17 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY WCM. <VEHICLES WITH WCM>
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 18 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY SRS-ECU.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 19 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY A/C-ECU <VEHICLES WITH A/C> OR HEATER CONTROL UNIT <VEHICLES WITHOUT A/C>.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 20 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY RADIO AND CD PLAYER <VEHICLES WITH RADIO AND CD PLAYER>
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 21 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY CAN BOX UNIT <VEHICLES WITH MMCS>
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 22 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY HANDS-FREE MODULE. <VEHICLES WITH HANDS FREE CELLULAR PHONE SYSTEM>
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 23 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY COMBINATION METER.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 24 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY OCCUPANT CLASSIFICATION-ECU.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 25 DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY SATELLITE RADIO TUNER. <VEHICLES WITH SATELLITE RADIO TUNER>
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: A failure in the red section, or a bus-off failure is present in the gateway ECU.	DIAGNOSIS ITEM 26 SHORT TO POWER SUPPLY OR GROUND IN BOTH CAN_H AND CAN_L LINES.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 27 DIAGNOSE THE ETACS-ECU, JOINT CONNECTOR (CAN1) OR LINES BETWEEN ETACS-ECU AND JOINT CONNECTOR (CAN1).
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	CAN-B: Disconnection in red displayed area is estimated.	DIAGNOSIS ITEM 28 SHORT TO POWER SUPPLY OR GROUND, OPEN CIRCUIT OR LINE-TO-LINE SHORT IN THE CAN-B BUS LINES.