Mitsubishi Galant 9G. Manual - part 1228

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-16

<Comment>
Malfunction of terminating resistance is 
estimated.

Diagnostic Item 12
Diagnose a terminator resistor at either 
end <Vehicles without ABS>

P.54C-429

<Comment>
Disconnection, loose connection or terminating 
resistance in red displayed area is 
estimated.

<Comment>
Disconnection, loose connection or terminating 
resistance in red displayed area is 
estimated.

MUT-III SCREEN

DIAGNOSIS DETAILS

REFERENCE 
PAGE

AC305790

: Red section on screen

PCM

METER

-ECU

AD

MUT

ETACS

-ECU

AC-ECU

SRS-ECU

J/C

AC305790

: Red section on screen

PCM

METER

-ECU

AE

MUT

ETACS

-ECU

AC-ECU

SRS-ECU

J/C

AC305790

: Red section on screen

PCM

METER

-ECU

AF

MUT

ETACS

-ECU

AC-ECU

SRS-ECU

J/C

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-17

<Comment>
Malfunction in red displayed area is estimated. 
Please refer to service manual and inspect with 
’CAN Detail 
Diagnosis’.

Diagnostic Item 14
Diagnose CAN bus lines thoroughly 
<Vehicles without ABS and vehicles 
without multi-center display 
(middle-grade type)>

P.54C-456

<Comment>
Harness disconnection or loose connection in red 
displayed area is 
estimated.

Diagnostic Item 17
Diagnose the lines between CAN main 
bus line and the powertrain control 
module <Vehicles without ABS>

P.54C-555

<Comment>
Harness disconnection or loose connection in red 
displayed area is 
estimated.

Diagnostic Item 20
Diagnose the lines between CAN main 
bus line and the ETACS-ECU.

P.54C-576

MUT-III SCREEN

DIAGNOSIS DETAILS

REFERENCE 
PAGE

AC305790

ETACS

-ECU

AC-ECU

: Red section on screen

PCM

SRS-ECU

METER

-ECU

AB

MUT

J/C

AC305790

: Red section on screen

PCM

AG

MUT

ETACS

-ECU

AC-ECU

SRS-ECU

METER

-ECU

AC305790

: Red section on screen

AH

MUT

ETACS

-ECU

AC-ECU

SRS-ECU

J/C

METER

-ECU

PCM

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-18

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.

<Comment>
Harness disconnection or loose connection in red 
displayed area is 
estimated.

Diagnostic Item 22
Diagnose the lines between CAN main 
bus line and the A/C-ECU.

P.54C-587

<Comment>
Harness disconnection or loose connection in red 
displayed area is 
estimated.

Diagnostic Item 23
Diagnose the lines between CAN main 
bus line and the SRS-ECU.

P.54C-594

<Comment>
Harness disconnection or loose connection in red 
displayed area is 
estimated.

Diagnostic Item 24
Diagnose the lines between CAN main 
bus line and the combination meter.

P.54C-602

MUT-III SCREEN

DIAGNOSIS DETAILS

REFERENCE 
PAGE

AC305790

: Red section on screen

AI

MUT

ETACS

-ECU

AC-ECU

SRS-ECU

J/C

METER

-ECU

PCM

AC305790

: Red section on screen

AJ

MUT

ETACS

-ECU

AC-ECU

SRS-ECU

J/C

METER

-ECU

PCM

AC305790

: Red section on screen

AK

MUT

ETACS

-ECU

AC-ECU

SRS-ECU

J/C

METER

-ECU

PCM

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-19

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

MUT-III SCREEN

DIAGNOSIS DETAILS

REFERENCE 
PAGE

<Comment>
Short circuit to battery in red displayed area is 
estimated.

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)>

P.54C-72

<Comment>
Grounding in red displayed area is 
estimated.

Diagnostic Item 5
Diagnose shorts in the ground to CAN 
bus line <Vehicles with ABS and 
vehicles without multi-center display 
(middle-grade type)>

P.54C-208

<Comment>
Short circuit between CAN_H and CAN_L in red 
displayed area is 
estimated.

Diagnostic Item 8
Diagnose shorts between CAN_L and H 
lines <Vehicles with ABS and vehicles 
without multi-center display 
(middle-grade type)>

P.54C-331

AC305791

ETACS

-ECU

AC-ECU

: Red section on screen

PCM

SRS-ECU

METER

-ECU

ABS-ECU

AB

MUT

J/C

AC305791

ETACS

-ECU

AC-ECU

: Red section on screen

PCM

SRS-ECU

METER

-ECU

ABS-ECU

AB

MUT

J/C

AC305791

ETACS

-ECU

AC-ECU

: Red section on screen

PCM

SRS-ECU

METER

-ECU

ABS-ECU

AB

MUT

J/C