Can Bus Diagnostics Table

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.

CAUTION: During diagnosis, a DTC 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 DTC code(s). If DTC code(s) are set, erase them all.

Vehicles without ABS and vehicles without multi-center display (middle-grade type)

CAN BUS DIAGNOSTICS - VEHICLES WITHOUT ABS AND MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE)

M.U.T.-III SCREEN	DIAGNOSIS DETAILS	REFERENCE
< Comment > Short circuit to battery in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 1 Diagnose shorts in the power supply to CAN bus line < Vehicles without ABS and vehicles without multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 1: DIAGNOSE SHORTS IN THE POWER SUPPLY TO CAN BUS LINE < VEHICLES WITHOUT ABS AND VEHICLES WITHOUT MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Grounding in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 4 Diagnose shorts in the ground to CAN bus line < Vehicles without ABS and vehicles without multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 4: DIAGNOSE SHORTS IN THE GROUND TO CAN BUS LINE < VEHICLES WITHOUT ABS AND VEHICLES WITHOUT MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Short circuit between CAN_H and CAN_L in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 7 Diagnose shorts between CAN_L and H lines < Vehicles without ABS and vehicles without multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 7: DIAGNOSE SHORTS BETWEEN CAN_L AND H LINES < VEHICLES WITHOUT ABS AND VEHICLES WITHOUT MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Disconnection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 10 Diagnose terminator resistors at both ends < Vehicles without ABS >	DIAGNOSTIC ITEM 10: DIAGNOSE TERMINATOR RESISTORS AT BOTH ENDS < VEHICLES WITHOUT ABS >
< Comment > Malfunction of terminating resistance is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 12 Diagnose a terminator resistor at either end < Vehicles without ABS >	DIAGNOSTIC ITEM 12: DIAGNOSE A TERMINATOR RESISTOR AT EITHER END < VEHICLES WITHOUT ABS >
< Comment > Disconnection, loose connection or terminating resistance in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
< Comment > Disconnection, loose connection or terminating resistance in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
< Comment > Malfunction in red displayed area is estimated. Please refer to service information and inspect with CAN Detail Diagnosis. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 14 Diagnose CAN bus lines thoroughly < Vehicles without ABS and vehicles without multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 14: DIAGNOSE CAN BUS LINES THOROUGHLY < VEHICLES WITHOUT ABS AND VEHICLES WITHOUT MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 17 Diagnose the lines between CAN main bus line and the powertrain control module < Vehicles without ABS >	DIAGNOSTIC ITEM 17: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE POWERTRAIN CONTROL MODULE < VEHICLES WITHOUT ABS >
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 20 Diagnose the lines between CAN main bus line and the ETACS-ECU.	DIAGNOSTIC ITEM 20: FAILURE IN THE LINES BETWEEN CAN MAIN BUS LINE AND THE ETACS-ECU
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 22 Diagnose the lines between CAN main bus line and the A/C-ECU.	DIAGNOSTIC ITEM 22: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE A/C-ECU
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 23 Diagnose the lines between CAN main bus line and the SRS-ECU.	DIAGNOSTIC ITEM 23: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE SRS-ECU
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 24 Diagnose the lines between CAN main bus line and the combination meter.	DIAGNOSTIC ITEM 24: FAILURE IN THE LINES BETWEEN CAN MAIN BUS LINE AND THE COMBINATION METER
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 25 Diagnose the lines between CAN main bus line and the TPMS receiver.	DIAGNOSTIC ITEM 25: FAILURE IN THE LINES BETWEEN CAN MAIN BUS LINE AND THE TPMS RECIVER

NOTE: If the screen other than above is displayed, problems are present at two or more spots. In this case, diagnose CAN bus lines by referring to the trouble spot pinpoint procedures.

NOTE: If trouble cannot be solved after performing the diagnosis other than item 14, diagnose CAN bus line thoroughly.

Vehicles with ABS and vehicles without multi-center display (middle-grade type)

CAN BUS DIAGNOSTICS - VEHICLES WITH ABS AND WITHOUT MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE)

M.U.T.-III SCREEN	DIAGNOSIS DETAILS	REFERENCE
< Comment > Short circuit to battery in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 2 Diagnose shorts in the power supply to CAN bus line < Vehicles with ABS and vehicles without multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 2: DIAGNOSE SHORTS IN THE POWER SUPPLY TO CAN BUS LINE < VEHICLES WITH ABS AND VEHICLES WITHOUT MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Grounding in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 5 Diagnose shorts in the ground to CAN bus line < Vehicles with ABS and vehicles without multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 5: DIAGNOSE SHORTS IN THE GROUND TO CAN BUS LINE < VEHICLES WITH ABS AND VEHICLES WITHOUT MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Short circuit between CAN_H and CAN_L in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 8 Diagnose shorts between CAN_L and H lines < Vehicles with ABS and vehicles without multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 8: DIAGNOSE SHORTS BETWEEN CAN_L AND H LINES < VEHICLES WITH ABS AND VEHICLES WITHOUT MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Disconnection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 11 Diagnose terminator resistors at both ends < Vehicles with ABS >	DIAGNOSTIC ITEM 11: DIAGNOSE TERMINATOR RESISTORS AT BOTH ENDS < VEHICLES WITH ABS >
< Comment > Malfunction of terminating resistance is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 13 Diagnose a terminator resistor at either end < Vehicles with ABS >	DIAGNOSTIC ITEM 13: DIAGNOSE A TERMINATOR RESISTOR AT EITHER END < VEHICLES WITH ABS >
< Comment > Disconnection, loose connection or terminating resistance in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
< Comment > Disconnection, loose connection or terminating resistance in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
< Comment > Malfunction in red displayed area is estimated. Please refer to service information and inspect with CAN Detail Diagnosis. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 15 Diagnose CAN bus lines thoroughly < Vehicles with ABS and vehicles without multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 15: DIAGNOSE CAN BUS LINES THOROUGHLY < VEHICLES WITH ABS AND VEHICLES WITHOUT MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 18 Diagnose the lines between CAN main bus line and the powertrain control module < Vehicles with ABS >	DIAGNOSTIC ITEM 18: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE POWERTRAIN CONTROL MODULE < VEHICLES WITH ABS >
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 19 Diagnose the lines between CAN main bus line and the ABS-ECU.	DIAGNOSTIC ITEM 19: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE ABS-ECU
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 20 Diagnose the lines between CAN main bus line and the ETACS-ECU.	DIAGNOSTIC ITEM 20: FAILURE IN THE LINES BETWEEN CAN MAIN BUS LINE AND THE ETACS-ECU
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 22 Diagnose the lines between CAN main bus line and the A/C-ECU.	DIAGNOSTIC ITEM 22: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE A/C-ECU
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 23 Diagnose the lines between CAN main bus line and the SRS-ECU.	DIAGNOSTIC ITEM 23: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE SRS-ECU
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 24 Diagnose the lines between CAN main bus line and the combination meter.	DIAGNOSTIC ITEM 24: FAILURE IN THE LINES BETWEEN CAN MAIN BUS LINE AND THE COMBINATION METER
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 25 Diagnose the lines between CAN main bus line and the TPMS receiver.	DIAGNOSTIC ITEM 25: FAILURE IN THE LINES BETWEEN CAN MAIN BUS LINE AND THE TPMS RECIVER

NOTE: If the screen other than above is displayed, troubles are present at two or more spots. In this case, diagnose CAN bus lines by referring to the trouble spot pinpoint procedures.

NOTE: If a trouble cannot be solved after performing the diagnosis other than item 15, diagnose CAN bus line thoroughly.

Vehicles with ABS and vehicles with multi-center display (middle-grade type)

CAN BUS DIAGNOSTICS - VEHICLES WITH ABS AND MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE)

M.U.T.-III SCREEN	DIAGNOSIS DETAILS	REFERENCE
< Comment > Short circuit to battery in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 3 Diagnose shorts in the power supply to CAN bus line < Vehicles with ABS and vehicles with multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 3: DIAGNOSE SHORTS IN THE POWER SUPPLY TO CAN BUS LINE < VEHICLES WITH ABS AND VEHICLES WITH MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Grounding in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 6 Diagnose shorts in the ground to CAN bus line < Vehicles with ABS and vehicles with multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 6: DIAGNOSE SHORTS IN THE GROUND TO CAN BUS LINE < VEHICLES WITH ABS AND VEHICLES WITH MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Short circuit between CAN_H and CAN_L in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 9 Diagnose shorts between CAN_L and H lines < Vehicles with ABS and vehicles with multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 9: DIAGNOSE SHORTS BETWEEN CAN_L AND H LINES < VEHICLES WITH ABS AND VEHICLES WITH MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Disconnection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 11 Diagnose terminator resistors at both ends < Vehicles with ABS >	DIAGNOSTIC ITEM 11: DIAGNOSE TERMINATOR RESISTORS AT BOTH ENDS < VEHICLES WITH ABS >
< Comment > Malfunction of terminating resistance is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 13 Diagnose a terminator resistor at either end < Vehicles with ABS >	DIAGNOSTIC ITEM 13: DIAGNOSE A TERMINATOR RESISTOR AT EITHER END < VEHICLES WITH ABS >
< Comment > Disconnection, loose connection or terminating resistance in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
< Comment > Disconnection, loose connection or terminating resistance in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
< Comment > Malfunction in red displayed area is estimated. Please refer to service information and inspect with CAN Detail Diagnosis. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 16 Diagnose CAN bus lines thoroughly < Vehicles with ABS and vehicles with multi-center display (middle-grade type) >	DIAGNOSTIC ITEM 16: DIAGNOSE CAN BUS LINES THOROUGHLY < VEHICLES WITH ABS AND VEHICLES WITH MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM) >
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 18 Diagnose the lines between CAN main bus line and the powertrain control module < Vehicles with ABS >	DIAGNOSTIC ITEM 18: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE POWERTRAIN CONTROL MODULE < VEHICLES WITH ABS >
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 19 Diagnose the lines between CAN main bus line and the ABS-ECU.	DIAGNOSTIC ITEM 19: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE ABS-ECU
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 20 Diagnose the lines between CAN main bus line and the ETACS-ECU.	DIAGNOSTIC ITEM 20: FAILURE IN THE LINES BETWEEN CAN MAIN BUS LINE AND THE ETACS-ECU
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 21 Diagnose the lines between CAN main bus line and the multi-center display (middle-grade type)	DIAGNOSTIC ITEM 21: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE MULTI-CENTER DISPLAY (MIDDLE-GRADE TYPE OR VEHICLES WITH MITSUBISHI MULTI COMMUNICATION SYSTEM)
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 22 Diagnose the lines between CAN main bus line and the A/C-ECU.	DIAGNOSTIC ITEM 22: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE A/C-ECU
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 23 Diagnose the lines between CAN main bus line and the SRS-ECU.	DIAGNOSTIC ITEM 23: DIAGNOSE THE LINES BETWEEN CAN MAIN BUS LINE AND THE SRS-ECU
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 24 Diagnose the lines between CAN main bus line and the combination meter.	DIAGNOSTIC ITEM 24: FAILURE IN THE LINES BETWEEN CAN MAIN BUS LINE AND THE COMBINATION METER
< Comment > Harness disconnection or loose connection in red displayed area is estimated. Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.	Diagnostic Item 25 Diagnose the lines between CAN main bus line and the TPMS receiver.	DIAGNOSTIC ITEM 25: FAILURE IN THE LINES BETWEEN CAN MAIN BUS LINE AND THE TPMS RECIVER

NOTE: If the screen other than above is displayed, troubles are present at two or more spots. In this case, diagnose CAN bus lines by referring to the trouble spot pinpoint procedures.

NOTE: If a trouble cannot be solved after performing the diagnosis other than item 16, diagnose CAN bus line thoroughly.