Mitsubishi Colt Ralliart. Manual — part 474

COMBINATION METER

CHASSIS ELECTRICAL

54A-41

STEP 5. Check whether the diagnosis code is
reset.
Recheck if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Ignition switch: LOCK (OFF)

→ ON

(3) Check if the diagnosis code is set.

Q: Is the check result satisfactory?

YES :

A poor connection, open circuit or other

intermittent malfunction is present in the
lines between the engine-ECU <M/T> or
engine-CVT-ECU <CVT> and the
secondary speed sensor (Refer to GROUP
00, How to Use Troubleshooting/Inspection
Service Points

− How to Cope with

Intermittent Malfunctions

P.00-13

).

NO :

Replace the combination meter, and then go
to Step 6.

STEP 6. Check whether the diagnosis code is
reset.
Recheck if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Ignition switch: LOCK (OFF)

→ ON

(3) Check if the diagnosis code is set.

Q: Is the check result satisfactory?

YES :

The procedure is complete.

NO :

Go to Step 1.

Code No.U1206 Flag Invalid

CAUTION

If diagnosis code U1206 is set in the combination
meter, diagnose the CAN main bus line.

TROUBLE JUDGMENT

When the ignition switch is in the LOCK (OFF) posi-
tion, the combination meter receives door-open sig-
nal or communication standby instruction from the
ETACS-ECU and keeps CAN communication. If
there is a contradiction between these two signals,
diagnosis code U1206 will be set.

COMMENTS ON TROUBLE SYMPTOM

The M.U.T.-III shows a diagnosis code status as

active.

• The door switch system of the ETACS-ECU, the

ETACS-ECU, or the combination meter may be
defective.

The M.U.T.-III shows a diagnosis code status as

stored.

• Carry out diagnosis with particular emphasis on

connector(s) or wiring harness between the
ETACS-ECU and the door switch, and the power
supply system to the ETACS-ECU. For diagnosis
procedures, refer to "How to cope with past trou-
ble" (Refer to GROUP 00, How to Use Trouble-
shooting/Inspection Service Points

P.00-13

).

POSSIBLE CAUSES

• Damaged harness wires and connectors

• Malfunction of ETACS-ECU

• 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 4.

STEP 2. M.U.T.-III other system diagnosis code
Check that the ETACS-ECU sets a diagnosis code.

Q: Is the diagnosis code set?

YES :

Diagnose the CAN system (Refer to

GROUP 54B or 54C, Troubleshooting

P.54B-18

or

P.54C-15

).

NO :

Go to Step 3.

STEP 3. Replace the ETACS-ECU, and check
whether the diagnosis code is reset.
After the ETACS-ECU is replaced, then check that
the diagnosis code is reset.

Q: Is the check result satisfactory?

YES :

Go to Step 4.

NO :

Replace the combination meter, and then go
to Step 4.

Main

Index

Group

TOC

COMBINATION METER

CHASSIS ELECTRICAL

54A-42

STEP 4. Check whether the diagnosis code is
reset.
Recheck if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Ignition switch: LOCK (OFF)

→ ON

(3) Check if the diagnosis code is set.

Q: Is the check result satisfactory?

YES : .

The procedure is complete.

NO : .

Go to Step 1.

TROUBLE SYMPTOM CHART

M1543007201484

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.

CAUTION

When the battery cable is disconnected or the
combination meter is removed, the fuel gauge
learned value will be erased. To let the display
unit re-learn it, enter the vehicle speed (by driv-
ing the vehicle or entering simulated vehicle
speed) and then stop the vehicle.

Trouble symptom

Inspection
procedure
number

Reference page

Communication with the M.U.T.-III is not possible.

1

P.54A-43

Power supply circuit system check.

2

P.54A-44

Odometer and trip meter is not displayed.

3

All the needle meters do not work.

4

If the ignition switch is turned to the ON position, the
indicator and warning lights do not illuminate.

5

Speedometer does not work (other meters work).

6

P.54A-49

The fuel gauge needle moves excessively.

7

Tachometer does not work (other meters work).

8

P.54A-51

Fuel Gauge does not work (other meters work).

9

P.54A-53

Engine coolant temperature gauge does not work (other
meters work).

10

P.54A-57

Main

Index

Group

TOC

COMBINATION METER

CHASSIS ELECTRICAL

54A-43

SYMPTOM PROCEDURES

Inspection Procedure 1: Communication with the M.U.T.-III is not Possible.

COMMENTS ON TROUBLE SYMPTOM

If the system does not communicate with the
M.U.T.-III, power supply to the diagnosis connector
or CAN bus lines may be defective.

POSSIBLE CAUSES

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check that the engine-ECU <M/T> or
engine-CVT-ECU <CVT> communicates with the
M.U.T.-III.
Check that the M.U.T.-III communicates with the
engine-ECU <M/T> or engine-CVT-ECU <CVT>
when the M.U.T.-III is operated..

Q: Is the check result satisfactory?

YES :

Go to Step 2.

NO :

Perform MPI system troubleshooting. (Refer
to GROUP 13A <4A9>, Troubleshooting

P.13A-20

, or GROUP 13B <4G1>,

Troubleshooting

P.13B-18

.).

STEP 2. 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 :

Diagnose the power supply circuit. Refer to

P.54A-44

.

NO :

Repair the CAN bus lines (Refer to GROUP
54D, Diagnosis - Can Bus Diagnostics Table

P.54D-13

).

Main

Index

Group

TOC

COMBINATION METER

CHASSIS ELECTRICAL

54A-44

Inspection Procedure 2: Power Supply Circuit System Check

Inspection Procedure 3: Odometer and Trip Meter is not Displayed. <The Clock is not Displayed
Either.>

Inspection Procedure 4: All the Needle Meters do not Work.

Inspection Procedure 5: If the Ignition Switch is Turned to the ON Position, the Indicator and Warning
Lights do not Illuminate.

Combination Meter Power Supply Circuit

FUSIBLE
LINK

1

IGNITION
SWITCH (IG2)

IGNITION
SWITCH (IG1)

LCD ODO/TRIP

F/GA

T/GA

TACHO

SPEED

COMBINATION
METER

Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple

NOTE

: VEHICLES WITH MANUAL A/C
: VEHICLES WITH AUTOMATIC A/C

COMMENTS ON TROUBLE SYMPTOM

If the odometer and trip meter is not displayed <The
clock is not displayed either.> or all the meter nee-
dles doesn't move, power supply to the combination
meter, or the combination meter itself may be defec-
tive.

POSSIBLE CAUSES

• Damaged harness wires and connectors

• Malfunction of the combination meter

Main

Index

Group

TOC