Mitsubishi Evolution X. Manual — part 925

COMBINATION METER

TSB Revision

CHASSIS ELECTRICAL

54A-61

.

TECHNICAL DESCRIPTION (COMMENT)

If the odometer and tripmeter do not display or all the
meter needles do not move, the power supply to the
combination meter, or the combination meter itself
may have a problem.

.

TROUBLESHOOTING HINTS

• The wiring harness or connectors may have

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

• The combination meter may be defective

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

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

CAN communication system)

AC708950

Connectors: C-04, C-103

BE

C-04

C-103 (B)

AC708972AV

Connectors: C-307, C-309, C-317

ETACS-ECU

C-309 (B)

C-307 (B)

C-317

COMBINATION METER

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CHASSIS ELECTRICAL

54A-62

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.00E-2

."

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

position.

(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Troubleshoot the combination meter (Refer to

P.54A-28

).

NO : Go to Step 2.

STEP 2. Check combination meter connector C-04 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is combination meter connector C-04 in good

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

STEP 3. Check the battery power supply circuit to the
combination meter. Measure the voltage at combination
meter connector C-04.
(1) Disconnect the connector, and measure at the wiring

harness side.

(2) Turn the ignition switch to the LOCK (OFF) position.
(3) Measure the voltage between terminals 1, 24 and ground.

• The voltage should measure approximately 12 volts

(battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery

positive voltage)?
YES : Go to Step 5.
NO : Go to Step 4.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

AC608254 BB

Harness side: C-04

COMBINATION METER

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CHASSIS ELECTRICAL

54A-63

STEP 4. Check the wiring harness between combination
meter connector C-04 (terminal 1, 24) and the fusible link
(36).
NOTE: Also check ETACS-ECU connectors C-307, C-317 and
joint connector C-103 for loose, corroded, or damaged termi-
nals, or terminals pushed back in the connector. If ETACS-ECU
connector C-307, C-317 or joint connector C-103 is damaged,
repair or replace the damaged component(s) as described in
GROUP 00E, Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between combination meter

connector C-04 (terminal 1, 24 and the fusible link (36) in
good condition?
YES : The trouble can be an intermittent malfunction (Refer

to GROUP 00

− How to Cope with Intermittent

Malfunction

P.00-15

).

NO : Repair the wiring harness.

STEP 5. Check the battery power supply circuit to the
combination meter. Measure the voltage at combination
meter connector C-04.
(1) Disconnect the connector, and measure at the wiring

harness side.

(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between terminals 2 and ground.

• The voltage should measure approximately 12 volts

(battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery

positive voltage)?
YES : Go to Step 8.
NO : Go to Step 6.

AC608254 BC

Harness side: C-04

COMBINATION METER

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CHASSIS ELECTRICAL

54A-64

STEP 6. Using scan tool MB991958, check data list.
Check the input signal from the ignition switch (IG1) in the
ETACS-ECU.
(1) Check the ETACS data list.

• Turn the ignition switch to the "ON" position.

(2) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Do the scan tool MB991958 display the item "IG voltage"

is normal condition?
YES : Go to Step 7.
NO : Troubleshoot the ETACS-ECU. Refer to Inspection

Procedure 2 "The ignition switch (IG1) signal is not
received

P.54A-642

."

STEP 7. Check the wiring harness between combination
meter connector C-04 (terminal 2) and the fusible link (34).
NOTE: Also check ETACS-ECU connectors C-309 and C-317
for loose, corroded, or damaged terminals, or terminals pushed
back in the connector. If ETACS-ECU connector C-309 or
C-317 is damaged, repair or replace the damaged compo-
nent(s) as described in GROUP 00E, Harness Connector
Inspection

P.00E-2

.

Q: Is the wiring harness between combination meter

connector C-04 (terminal 2) and the fusible link (34) in
good condition?
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 : Repair the wiring harness.

Item No.

Item name

Normal
condition

Item 254

IG voltage

Approximately 12
volts (battery
positive voltage)