Mitsubishi Lancer (4A9 engine). Manual — part 98

COMBINATION METER

CHASSIS ELECTRICAL

54A-54

STEP 2. M.U.T.-III diagnosis code
Check if diagnosis code is set to the combination
meter.

Q: Is the diagnosis code set?

YES :

Troubleshoot the combination meter. Refer

to . Complete the combination meter
troubleshooting, then go to Step 6.

NO :

Go to Step 3.

STEP 3. M.U.T.-III other system diagnosis code
Check if diagnosis code is set to the ABS <vehicles
with ABS> or ASC <vehicles with ASC>.

Q: Is the diagnosis code set to the any of the above?

Set to the ABS-ECU. :

Troubleshoot the ABS.

Refer to GROUP 35B

− Troubleshooting .

Set to the ASC-ECU. :

Troubleshoot the ASC.

Refer to GROUP 35C

− Troubleshooting .

The diagnosis code is not set. :

Go to Step 4.

STEP 4. M.U.T.-III data list

• Item 80: Speedometer (Refer to ).

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

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

STEP 5. M.U.T.-III actuator test

• Item 1: Speedometer (Refer to ).

OK: The speedometer operates up to the set
position.

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

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

STEP 6. Retest the system
Check that the speedometer works normally.

Q: Is the check result normal?

YES :

The procedure is complete.

NO :

Go to Step 1.

Inspection Procedure 6: The tachometer does not work (the other meters work).

COMMENTS ON TROUBLE SYMPTOM
If only the tachometer does not operate, the ignition
signal from the engine-ECU may not be received or
the combination meter may have a problem.

PROBABLE CAUSES

• Malfunction of combination meter

• Malfunction of engine-ECU

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 normal?

YES :

Go to Step 2.

NO :

Repair the CAN bus line (Refer to GROUP
54C

− Troubleshooting ). Complete the CAN

troubleshooting, and then go to Step 6.

STEP 2. M.U.T.-III diagnosis code
Check if diagnosis code is set to the combination
meter.

Q: Is the diagnosis code set?

YES :

Troubleshoot the combination meter. Refer

to . Complete the combination meter
troubleshooting, then go to Step 6.

NO :

Go to Step 3.

STEP 3. M.U.T.-III other system diagnosis code
Check if diagnosis code is set to the engine-ECU.

Q: Is the diagnosis code set?

YES :

Troubleshoot the engine (Refer to GROUP

13A

− Troubleshooting <1600> or GROUP

13B

− Troubleshooting <1800-Petrol-

DOHC, 2000> or GROUP 13C

−

Troubleshooting <1800-Diesel> or GROUP
13F

− Troubleshooting <1800-Petrol-

SOHC>). Complete the engine
troubleshooting, and then go to Step 6.

NO :

Go to Step 4.

STEP 4. M.U.T.-III data list

• Item 87: Tachometer (Refer to ).

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

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

COMBINATION METER

CHASSIS ELECTRICAL

54A-55

STEP 5. M.U.T.-III actuator test

• Item 2: Tachometer (Refer to ).

OK: The tachometer operates up to the set
position.

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

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

STEP 6. Retest the system
Check that the tachometer works normally.

Q: Is the check result normal?

YES :

The procedure is complete.

NO :

Go to Step 1.

Inspection Procedure 7: Buzzers do not sound normally.

CAUTION

Before replacing the combination meter, be sure
to check that the power supply circuit, earth cir-
cuit, and communication circuit are normal.
COMMENTS ON TROUBLE SYMPTOM
When the following signals are received via the CAN
communication or signal line, the combination meter
sounds the incorporated buzzer according to the
each pattern.

Seat belt reminder function

• Ignition switch ON signal

• Driver’s seat belt switch signal

• Passenger’s seat belt switch signal

• Vehicles speed signal

Lamp reminder buzzer function

• Ignition switch OFF signal

• Lighting switch ON signal

• Driver's door switch ON signal

Door-ajar warning buzzer function

• Ignition switch ON signal

• Any door switch or tailgate switch ON signal

• Vehicles speed signal

Freeze warning buzzer function

• Ignition switch ON signal

• Ambient temperature signal

Parking brake reminder buzzer function

• Ignition switch ON signal

• Parking brake switch

• Vehicles speed signal

Multi information display interrupt display buzzer

• Display condition signal of information display

from each warning (When there is a fixed buzzer
sounding pattern for each warning, that pattern
has the priority.)

Meter information switch operation buzzer

• ON signal for meter information switch

Turn-signal lamp buzzer function

• Turn-signal lamp switch ON signal

A/T shift cancel buzzer, paddle shift cancel prohi-

bition buzzer, rest reminder buzzer, ETACS-
ECU function customise buzzer, sunroof
buzzer function, A/C operation buzzer, audio
operation buzzer

• Sounding request signal from the ETACS-ECU

If the buzzer does not sound normally, the connec-
tor(s) and wiring harness in the CAN bus lines, or the
ETACS-ECU or the combination meter may have a
problem.

PROBABLE CAUSES

• Malfunction of combination meter

• Damaged harness wires and connectors

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 normal?

YES :

Go to Step 2.

NO :

Repair the CAN bus line (Refer to GROUP
54C

− Troubleshooting ).

STEP 2. M.U.T.-III diagnosis code
Check if diagnosis code is set to the combination
meter.

Q: Is the diagnosis code set?

YES :

Refer to .

NO :

Go to Step 3.

STEP 3. M.U.T.-III other system diagnosis code
Check if diagnosis code is set to the engine-ECU,
CVT-ECU, A/T-ECU, ABS-ECU, ASC-ECU, audio,
ETACS-ECU or A/C-ECU or heater control unit.

Q: Is the diagnosis code set to the any of the above?

COMBINATION METER

CHASSIS ELECTRICAL

54A-56

Set to the engine-ECU. :

Troubleshoot the engine

(Refer to GROUP 13A

− Troubleshooting

<1600> or GROUP 13B

− Troubleshooting

<1800-Petrol-DOHC, 2000> or GROUP
13C

− Troubleshooting <1800-Diesel> or

GROUP 13F

− Troubleshooting <1800-

Petrol-SOHC>).

Set to the CVT-ECU. :

Troubleshoot the CVT. Refer

to GROUP 23A

− Diagnosis code chart .

Set to the A/T-ECU. :

Troubleshoot the A/T. Refer

to GROUP 23C

− Diagnosis code chart .

Set to the ABS-ECU. :

Troubleshoot the ABS.

Refer to GROUP 35B

− Troubleshooting .

Set to the ASC-ECU. :

Troubleshoot the ASC.

Refer to GROUP 35C

− Troubleshooting .

Set to the audio. :

Troubleshoot the audio. Refer

to .

Set to the ETACS-ECU. :

Troubleshoot the ETACS.

Refer to .

Set to the A/C-ECU/Heater control unit. :

Troubleshoot the A/C-ECU/Heater control
unit. Refer to GROUP 55A

−

Troubleshooting .

The diagnosis code is not set. :

Go to Step 4.

STEP 4. Check by M.U.T.-III "Special Function"
Using M.U.T.-III, select "Test" from the special func-
tion of the combination meter. Execute the following
item to check the buzzer.

• Item 3: Buzzer(AUTO)

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Replace the combination meter.

STEP 5. Retest the system
Check that the buzzers sound normally.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

use Troubleshooting/Inspection Service
Points

− How to Cope with Intermittent

Malfunction ).

NO :

Replace the combination meter.

Inspection Procedure 8: The combination meter warning display does not illuminate normally or the
multi information display is not displayed normally.

CAUTION

Before replacing the combination meter, be sure
to check that the power supply circuit, earth cir-
cuit, and communication circuit are normal.
COMMENTS ON TROUBLE SYMPTOM
When the signal from each ECU is received via the
CAN communication, the combination meter illumi-
nates the corresponding display lamp or warning
lamp, or has the multi information display to display
corresponding information.
If the lamps do not illuminate or the multi information
display does not display normally, the wiring harness
and connector(s) in the CAN bus lines, or the
ETACS-ECU or the combination meter may have a
problem.

PROBABLE CAUSES

• Malfunction of combination meter

• Damaged harness wires and connectors

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 normal?

YES :

Go to Step 2.

NO :

Repair the CAN bus line (Refer to GROUP
54C

− Troubleshooting ).

STEP 2. M.U.T.-III diagnosis code
Check again if the diagnosis code is set to the combi-
nation meter.

Q: Is the diagnosis code set?

YES :

Refer to .

NO :

Go to Step 3.

STEP 3. M.U.T.-III other system diagnosis code
Check again if the diagnosis code is set to the
engine-ECU, CVT-ECU, A/T-ECU, ABS-ECU, ASC-
ECU, EPS-ECU, KOS-ECU, SRS-ECU, headlamp
automatic levelling-ECU, ETACS-ECU and A/C-ECU
or heater control unit.

Q: Is the diagnosis code set to the any of the above?

COMBINATION METER

CHASSIS ELECTRICAL

54A-57

Set to the engine-ECU. :

Troubleshoot the engine

(Refer to GROUP 13A

− Troubleshooting

<1600> or GROUP 13B

− Troubleshooting

<1800-Petrol-DOHC, 2000> or GROUP
13C

− Troubleshooting <1800-Diesel> or

GROUP 13F

− Troubleshooting <1800-

Petrol-SOHC>).

Set to the CVT-ECU. :

Troubleshoot the CVT. Refer

to GROUP 23A

− Diagnosis code chart .

Set to the A/T-ECU. :

Troubleshoot the A/T. Refer

to GROUP 23C

− Diagnosis code chart .

Set to the ABS-ECU. :

Troubleshoot the ABS.

Refer to GROUP 35B

− Troubleshooting .

Set to the ASC-ECU. :

Troubleshoot the ASC.

Refer to GROUP 35C

− Troubleshooting .

Set to the EPS-ECU. :

Troubleshoot the EPS.

Refer to GROUP 37B

− Troubleshooting .

Set to the KOS-ECU. :

Troubleshoot the KOS.

Refer to GROUP 42B

− Troubleshooting .

Set to the SRS-ECU. :

Troubleshoot the SRS.

Refer to GROUP 52B

− Troubleshooting .

Set to the headlamp automatic levelling-ECU. :

Troubleshoot the AFS. Refer to .

Set to the ETACS-ECU. :

Troubleshoot the ETACS.

Refer to .

Set to the A/C-ECU/Heater control unit. :

Troubleshoot the A/C-ECU/Heater control
unit. Refer to GROUP 55A

−

Troubleshooting .

The diagnosis code is not set. :

Go to Step 4.

STEP 4. M.U.T.-III actuator test
Perform the actuator test, and check that warning
lamps are illuminated normally.

• Item 7: Indicator1

• Item 8: Indicator2

• Item 9: Indicator3

• Item 10: Indicator4

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Replace the combination meter.

STEP 5. Check by M.U.T.-III "Special Function"
Using M.U.T.-III, select "Test" from the special func-
tion of the combination meter. Execute the following
item to check the liquid crystal display.

• Item 2: LCD(AUTO)

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Replace the combination meter.

STEP 6. Retest the system
Check that display lamps or warning lamps are illu-
minated normally, or multi information display is dis-
played normally.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

use Troubleshooting/Inspection Service
Points

− How to Cope with Intermittent

Malfunction ).

NO :

Replace the combination meter.