Mitsubishi Colt Ralliart. Manual - part 471

COMBINATION METER

CHASSIS ELECTRICAL

54A-29

SPECIAL TOOLS

M1543000603261

Tool

Number

Name

Use

MB990784

MB990784

Ornament remover

combination meter bezel removal

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

A

B

C

D

E

F

DO NOT USE

MB991955

A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991825
F: MB991826

M.U.T.-III 
sub-assembly

A: Vehicle 

communication 
interface (V.C.I.)

B: M.U.T.-III USB 

cable

C: M.U.T.-III main 

harness A 
(Vehicles with CAN 
communication 
system)

D: M.U.T.-III main 

harness B 
(Vehicles without 
CAN 
communication 
system)

E: M.U.T.-III 

measurement 
adapter

F: M.U.T.-III trigger 

harness

Check for CAN bus line

CAUTION

For vehicles with CAN 
communication, use M.U.T.-III 
main harness A to send 
simulated vehicle speed. If you 
connect M.U.T.-III main harness 
B instead, the CAN 
communication does not 
function correctly.

Main

Index

Group

TOC

MB991223

A

D

C

B

AZ

DO NOT USE

COMBINATION METER

CHASSIS ELECTRICAL

54A-30

MB991223
A: MB991219
B: MB991220 
C: MB991221
D: MB991222

Harness set
A: Test harness
B: LED harness
C: LED harness 

adapter

D: Probe

Making voltage and resistance 
measurements during 
troubleshooting

A: Connect pin contact pressure 

inspection

B: Power circuit inspection
C: Power circuit inspection
D: Commercial tester connection

MB992006

MB992006

Extra fine probe

Continuity check and voltage 
measurement at harness wire or 
connector

Tool

Number

Name

Use

Main

Index

Group

TOC

COMBINATION METER

CHASSIS ELECTRICAL

54A-31

TROUBLESHOOTING

DIAGNOSIS FUNCTION

M1543007000755

HOW TO READ DIAGNOSIS CODE

Refer to GROUP 00, How to Use Troubleshoot-
ing/Inspection Service Points 

P.00-7

. 

HOW TO ERASE DIAGNOSIS CODE

Refer to GROUP 00, How to Use Troubleshoot-
ing/Inspection Service Points 

P.00-7

. 

DIAGNOSIS CODE CHART

M1543007101261

CAUTION

During diagnosis, a diagnosis code associated 
with other system may be set when the ignition 
switch is turned on with connector(s) discon-
nected. On completion, confirm all systems for 
diagnosis code(s). If diagnosis code(s) are set, 
erase them all.

Diagnosis 
code No.

Diagnosis item

Reference page

U1073

Bus Off

P.54A-32

U1100

Engine-ECU <M/T> or engine-CVT-ECU <CVT> time-out 
(related to engine)

P.54A-33

U1101

Engine-CVT-ECU (related to CVT) <CVT>

U1102

ABS-ECU or ASC-ECU time-out

P.54A-35

U1106

EPS-ECU time-out

P.54A-36

U1109

ETACS-ECU time-out

P.54A-38

U1112

SRS-ECU time-out

P.54A-39

U1120

Failure information on engine-ECU <M/T> or 
engine-CVT-ECU <CVT> (related to engine)

P.54A-40

U1206

Flag invalid

P.54A-41

B1001

Interior temperature sensor system (short circuit)

Refer to GROUP 55A, 
Check chart for diagnosis 
codes 

P.55A-5

. Refer to 

GROUP 55B, Check chart 
for diagnosis codes 

P.55B-3

.

B1002

Interior temperature sensor system (open circuit)

B1011

Ambient temperature sensor system (short circuit)

B1012

Ambient temperature sensor system (open circuit)

B1021

Air thermo sensor system (short circuit)

B1022

Air thermo sensor system (open circuit)

B1041

Potentiometer system for the air mix damper (short to power 
supply)

B1042

Potentiometer system for the air mix damper (short to earth or 
open circuit)

B1045

Motor drive system for the air mix damper

B1081

Communication error with control parts

B1082

Automatic/manual types abnormal error

Main

Index

Group

TOC

COMBINATION METER

CHASSIS ELECTRICAL

54A-32

DIAGNOSTIC TROUBLE CODE 
PROCEDURES

Code No.U1073 Bus Off

CAUTION

If diagnosis code U1073 is set in the combination 
meter, always diagnose the CAN bus lines.

CAUTION

Whenever the ECU is replaced, ensure that the 
communication circuit is normal.

TROUBLE JUDGMENT

If the combination meter ceases communicating 
once (i.e. bus off) and then returns to it, the combina-
tion meter will not communicate for three minutes 
immediately after that point. This three-minute period 
is called "Penalty mode." Immediately after the com-
bination meter returns to communication, the diagno-
sis code is set.

COMMENTS ON TROUBLE SYMPTOM

The wiring harness wire or connectors may have 
loose, corroded, or damage terminals, or terminals 
pushed back in the connector, or the combination 
meter may be defective.

POSSIBLE CAUSES

• Damaged harness wires and connectors

• Malfunction of combination meter

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use the M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result satisfactory?

YES : 

Go to Step 2.

NO : 

Repair the CAN bus lines. (Refer to GROUP 
54D, Diagnosis 

− Can Bus Diagnostics 

Table 

P.54D-13

). Repair the CAN bus line 

and go to Step 3.

STEP 2. Check whether the diagnosis code is 
reset.
Recheck if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Turn the ignition switch to "ON" position.
(3) Check if the diagnosis code is set.

Q: Is the check result satisfactory?

YES : 

If the trouble is solved, it is determined that 

there is an intermittent malfunction such as 
poor engaged connector(s) or open circuit 
(Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 

P.00-13

).

NO : 

Replace combination meter and then go to 
Step 3.

STEP 3. Check whether the diagnosis code is 
reset.
Recheck if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Turn the ignition switch to "ON" position.
(3) Check if the diagnosis code is set.

Q: Is the check result satisfactory?

YES : 

The procedure is complete.

NO : 

Go to Step 1.

Main

Index

Group

TOC