Mitsubishi Lancer (4A9 engine). Manual — part 96

COMBINATION METER

CHASSIS ELECTRICAL

54A-46

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 other system diagnosis code
Check again if the diagnosis code is set to the KOS-
ECU <vehicles with KOS> or WCM <vehicles with
WCM>.

Q: Is the diagnosis code set?

Set to the KOS-ECU. :

Troubleshoot the KOS.

Refer to GROUP 42B

− Diagnosis Code

Chart .

Set to the WCM. :

Troubleshoot the WCM. Refer to

GROUP 42C

− Diagnosis Code Chart .

The diagnosis code is not set. :

Go to Step 3.

STEP 3. Check the M.U.T.-III Diagnosis code for
other systems
Check if the diagnosis code No. U0168 is set to
ETACS-ECU.

Q: Is the diagnosis code set?

YES :

Go to Step 4.

NO :

Go to Step 5.

STEP 4. Diagnosis code recheck
Check again if the diagnosis code is set to the combi-
nation meter.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the LOCK (OFF)

position to the ON position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace KOS-ECU or WCM.

NO :

A poor connection, open circuit, or other
intermittent malfunction in the CAN bus line
between the combination meter and KOS-
ECU or WCM. (Refer to GROUP 00

− How

to Use Troubleshooting/Inspection Service
Points - How to Cope with Intermittent
Malfunction .)

STEP 5. Diagnosis code recheck
Check again if the diagnosis code is set to the combi-
nation meter.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the LOCK (OFF)

position to the ON position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the combination meter.

NO :

A poor connection, open circuit, or other
intermittent malfunction in the CAN bus line
between the combination meter and KOS-
ECU or WCM. (Refer to GROUP 00

− How

to Use Troubleshooting/Inspection Service
Points - How to Cope with Intermittent
Malfunction .)

Code No.U0184 Audio CAN timeout

CAUTION

• If the diagnosis code No. U0184 is set, be sure

to diagnose the CAN bus line.

• When replacing the ECU, always check that

the communication circuit is normal.

DIAGNOSTIC FUNCTION
When the signals from radio and CD player cannot
be received, the combination meter sets the diagno-
sis code No. U0184.

JUDGMENT CRITERIA
With the statuses that the ignition switch is at ON
position, system voltage is 10

− 16 V (data from

ETACS-ECU), and there is no malfunction to the
power supply fuse (IOD fuse), or odometer value is
80.5 km or more, if the communications with radio
and CD player cannot be established for 2,500 ms or
more, the combination meter determines that a prob-
lem has occurred.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of combination meter

• Malfunctions of radio and CD player

COMBINATION METER

CHASSIS ELECTRICAL

54A-47

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 other system diagnosis code
Check again if the diagnosis code is set to the radio
and CD player.

Q: Is the diagnosis code set?

YES :

Troubleshoot the radio and CD player. Refer

to .

NO :

Go to Step 3.

STEP 3. Check the M.U.T.-III Diagnosis code for
other systems
Check if the diagnosis code No. U0184 is set to
ETACS-ECU.

Q: Is the diagnosis code set?

YES :

Go to Step 4.

NO :

Go to Step 5.

STEP 4. Diagnosis code recheck
Check again if the diagnosis code is set to the combi-
nation meter.
(1) Erase the diagnosis code.

(2) Turn the ignition switch from the LOCK (OFF)

position to the ON position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the radio and CD player.

NO :

A poor connection, open circuit, or other
intermittent malfunction in the CAN bus line
between the combination meter and radio
and CD player. (Refer to GROUP 00

− How

to Use Troubleshooting/Inspection Service
Points - How to Cope with Intermittent
Malfunction .)

STEP 5. Diagnosis code recheck
Check again if the diagnosis code is set to the combi-
nation meter.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the LOCK (OFF)

position to the ON position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the combination meter.

NO :

A poor connection, open circuit, or other
intermittent malfunction in the CAN bus line
between the combination meter and radio
and CD player. (Refer to GROUP 00

− How

to Use Troubleshooting/Inspection Service
Points - How to Cope with Intermittent
Malfunction .)

Code No.U0245 Audio visual navigation unit CAN timeout

CAUTION

• If the diagnosis code No. U0245 is set, be sure

to diagnose the CAN bus line.

• When replacing the ECU, always check that

the communication circuit is normal.

DIAGNOSTIC FUNCTION
When the signals from CAN box unit cannot be
received, the combination meter sets the diagnosis
code No. U0245.

JUDGMENT CRITERIA
With the statuses that the ignition switch is at ON
position, system voltage is 10

− 16 V (data from

ETACS-ECU), and there is no malfunction to the
power supply fuse (IOD fuse), or odometer value is
80.5 km or more, if the communications with CAN
box unit cannot be established for 2,500 ms or more,
the combination meter determines that a problem
has occurred.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of combination meter

• Malfunctions of CAN box unit

COMBINATION METER

CHASSIS ELECTRICAL

54A-48

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 other system diagnosis code
Check again if the diagnosis code is set to the CAN
box unit.

Q: Is the diagnosis code set?

YES :

Perform the diagnosis code troubleshooting

to the CAN box unit. Refer to .

NO :

Go to Step 3.

STEP 3. Check the M.U.T.-III Diagnosis code for
other systems
Check if the diagnosis code No. U0245 is set to
ETACS-ECU.

Q: Is the diagnosis code set?

YES :

Go to Step 4.

NO :

Go to Step 5.

STEP 4. Diagnosis code recheck
Check again if the diagnosis code is set to the combi-
nation meter.
(1) Erase the diagnosis code.

(2) Turn the ignition switch from the LOCK (OFF)

position to the ON position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the CAN box unit.

NO :

A poor connection, open circuit, or other
intermittent malfunction in the CAN bus line
between the combination meter and the
CAN box unit. (Refer to GROUP 00

− How

to Use Troubleshooting/Inspection Service
Points - How to Cope with Intermittent
Malfunction .)

STEP 5. Diagnosis code recheck
Check again if the diagnosis code is set to the combi-
nation meter.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the LOCK (OFF)

position to the ON position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the combination meter.

NO :

A poor connection, open circuit, or other
intermittent malfunction in the CAN bus line
between the combination meter and the
CAN box unit. (Refer to GROUP 00

− How

to Use Troubleshooting/Inspection Service
Points - How to Cope with Intermittent
Malfunction .)

Code No.U1415 Coding not completed/Data fail

CAUTION

• If the diagnosis code No. U1415 is set, diag-

nose the CAN bus lines.

• When replacing the ECU, always check that

the communication circuit is normal.

DIAGNOSTIC FUNCTION
If the vehicle information data is not registered to the
combination meter, the combination meter sets the
diagnosis code No. U1415.

JUDGMENT CRITERIA
With the global coding counter value "0," if all the glo-
bal coding data (vehicle information) are not stored,
the combination meter determines that a problem
has occurred.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of combination meter

• Malfunction of the ETACS-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 ).

STEP 2. M.U.T.-III other system diagnosis code
Check if diagnosis code is set to the ETACS-ECU.

Q: Is the diagnosis code set?

COMBINATION METER

CHASSIS ELECTRICAL

54A-49

YES :

Troubleshoot the ETACS-ECU. Refer to .

NO :

Go to Step 3.

STEP 3. Check whether the diagnosis code is
reset.
Check again if the diagnosis code is set to the combi-
nation meter.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF)

position to "ON" position.

(3) Check if diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the combination meter.

NO :

The trouble can be an intermittent
malfunction (Refer to GROUP 00

− How to

use Troubleshooting/Inspection Service
Points

− How to Cope with Intermittent

Malfunction ).

TROUBLE SYMPTOM CHART

M1540200800692

CAUTION

• During diagnosis, a diagnosis code associated with other system may be set when the ignition

switch is turned on with connector(s) disconnected. On completion, confirm all systems for diag-
nosis code(s). If diagnosis code(s) are set, erase them all.

• If the combination meter needs to be replaced as a result of troubleshooting, the current driving

distance and elapsed days must be entered into the meter after the replacement in order to be
used for service reminder function. Therefore, read "Integrated mileage for reminder," "Integrated
days for reminder," "Mileage until Extra reminder," "Months until Extra reminder," and "Current
schedule" from the meter before the replacement using the special function of M.U.T.-III, and note
them. For the operation method of M.U.T.-III, refer to . If "Integrated mileage for reminder" or "Inte-
grated days for reminder" cannot be read from the meter using M.U.T.-III, use the following
method.

a. As for the driving distance for check warning, use the driving distance displayed on the multi

information display.

b. As for the elapsed days for check warning, calculate the number of elapsed days from the

delivery date to the customer (service reminder function start date) and current date.

Trouble symptom

Inspection
Procedure
No.

Reference
page

Power supply circuit check

1

The odometer and the trip meter are not displayed.

2

No needle meters work.

3

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

4

The speedometer does not work (the other meters work).

5

The tachometer does not work (the other meters work).

6

Buzzers do not sound normally.

7

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

8

The multi information display screen cannot be changed with the operation of
the meter information switch.

9

Fuel gauge does not work (other meters work)

10

Seat belt reminder function does not work normally.

11