Mitsubishi Evolution X. Manual — part 928

COMBINATION METER

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CHASSIS ELECTRICAL

54A-73

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the

Scan Tool (M.U.T.-III)

P.54A-25

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES : Go to Step 2.
NO : Repair the CAN bus line (Refer to GROUP 54C,

Diagnosis

P.54C-14

).

STEP 2. Using scan tool MB991958, read the combination
meter diagnostic trouble code.
Check again if the DTC is set to the combination meter.
Q: Is the DTC set?

YES : Troubleshoot the combination meter (Refer to

P.54A-28

).

NO : Go to Step 3.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

COMBINATION METER

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CHASSIS ELECTRICAL

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STEP 3. Using scan tool MB991958, read for any
diagnostic trouble code.
Check again if the DTC is set to the engine control module,
TC-SST-ECU, WCM, KOS-ECU, ASC-ECU, SRS-ECU,
ETACS-ECU and A/C-ECU.
Q: Is the DTC set to the any of the above?

YES <Set to the engine control module.> : Troubleshoot

the engine control module (Refer to GROUP 13A,
Diagnosis

P.13A-44

).

YES <Set to the TC-SST-ECU.> : Troubleshoot the

TC-SST (Refer to GROUP 22C, Diagnosis

P.22C-10

).

YES <Set to the ASC-ECU.> : Troubleshoot the ASC

(Refer to GROUP 35C, Diagnosis

P.35C-20

).

YES <Set to the WCM.> : Troubleshoot the WCM (Refer to

GROUP 42C, diagnosis

P.42C-14

).

YES <Set to the KOS-ECU.> : Troubleshoot the KOS

(Refer to GROUP 42B, Diagnosis

P.42B-20

).

YES <Set to the SRS-ECU.> : Troubleshoot the SRS

(Refer to GROUP 52B, Diagnosis

P.52B-31

).

YES <Set to the ETACS-ECU.> : Troubleshoot the ETACS

(Refer to

P.54A-582

).

YES <Set to the A/C-ECU.> : Troubleshoot the A/C (Refer

to GROUP 55, Auto A/C Diagnosis

P.55-9

).

NO <The diagnostic trouble code is not set.> : Go to

Step 4.

STEP 4. Using scan tool MB991958, check actuator test.
(1) Turn the ignition switch to the "ON" position.
(2) Conduct the actuator test of the combination meter.

• Item 7: Indicator1

• Item 8: Indicator2

• Item 9: Indicator3

• Item 11: Shift indicator

• Item 13: Indicator4

• Perform the actuator test, and check that display

lights or warning lights are illuminated normally, or
multi information display is displayed normally.

(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result normal?

YES : Go to Step 5.
NO : Replace the combination meter.

STEP 5. Retest the system.
Check that display lights or warning lights are illuminated nor-
mally, or multi information display is displayed 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

P.00-15

).

NO : Replace the combination meter.

COMBINATION METER

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CHASSIS ELECTRICAL

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Inspection Procedure 6: The multi information display screen cannot be changed with the operation
of the multi information meter switch.

CAUTION

Before replacing the combination meter, be sure to check that the power supply circuit, ground cir-
cuit, and communication circuit are normal.

.

TECHNICAL DESCRIPTION (COMMENT)

When the signal from the meter information switch is
received, the combination meter switches the multi
information display screen. If the multi information
display screen does not switch normally, the meter
information switch, wiring harness, connector(s), or
combination meter may have a problem.

.

TROUBLESHOOTING HINTS

• The multi information meter switch may be defec-

tive

• The combination meter may be defective

• The wiring harness or connectors may have

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

• MB991958 Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicles Communication Interface (V.C.I.)

• MB991827 M.U.T.-III USB Cable

Meter Information Switch Circuit

INTERFACE
CIRCUIT

COMBINATION
METER

CPU

METER
INFOMATION
SWITCH

AC708950

Connectors: C-02, C-04

BF

C-04

C-02

COMBINATION METER

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CHASSIS ELECTRICAL

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• MB991910 M.U.T.-III Main Harness A (Vehicles with

CAN communication system)

STEP 1. Using scan tool MB991958, read the combination
meter diagnostic trouble code.
Check if DTC is set to the combination meter.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the

Scan Tool (M.U.T.-III)

P.54A-25

."

(2) Turn the ignition switch to the "ON" position.
(3) Turn the ignition switch from "LOCK" (OFF) position to "ON"

position.

(4) Check if DTC is set.
Q: Is the DTC set?

YES : Troubleshoot the combination meter (Refer to

P.54A-28

).

NO : Go to Step 2.

STEP 2. Check meter information switch connector C-02
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is meter information switch connector C-02 in good

condition?
YES : Go to Step 3.
NO : Repair the connector.

STEP 3. Check the multi information meter switch.
Check the multi information meter switch (Refer to

P.54A-92

).

Q: Is the check result normal?

YES : Go to Step 4.
NO : Replace the multi information meter switch.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB