Mitsubishi Evolution X. Manual — part 981

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

54A-285

STANDARD FLOW OF DIAGNOSTIC
TROUBLESHOOTING

M1544004800733

Refer to GROUP 00, Troubleshooting contents

P.00-7

DIAGNOSIS FUNCTION

M1544013200182

HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)

Required Special Tools:

• 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)

OFF AIR

This code is displayed when this channel is not
broadcast at this moment, or broadcast of the satellite
radio is interrupted. Check the airtime and the broadcast
conditions of SIRIUS

™ satellite radio.

NOT ACTIVATED

ID not registered

This code is displayed when the SIRIUS ID is not written
to the satellite radio tuner. Replace the satellite radio
tuner.

READING

Data reading in progress This code is displayed when the data received is being

read. Wait until reading of the data received is
completed.

UPDATING

Channel data updating in
progress

This code is displayed when SIRIUS

™ satellite radio is

updating the channel data. Wait until update is
completed.

SUB
UPDATINGPRESS
ANY KEY

Contract status updating
complete

This code is displayed when the contract status is
updated. This code disappears when any of the audio
switch is pressed.

Error code

Cause

Cause of trouble and its solution

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

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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. Ensure that the ignition switch is at the "LOCK" (OFF)

position.

2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824

and the personal computer.

4. Connect special tool MB991910 to special tool MB991824.
5. Connect special tool MB991910 to the data link connector.
6. Turn the power switch of special tool MB991824 to the "ON"

position.
NOTE: When special tool MB991824 is energized, special
tool MB991824 indicator light will be illuminated in a green
color.

7. Start the scan tool system on the personal computer.
NOTE: Disconnecting scan tool MB991958 is the reverse of the
connecting sequence, making sure that the ignition switch is at
the "LOCK" (OFF) position.

HOW TO READ AND ERASE DIAGNOSTIC
TROUBLE CODES

Required Special Tools:

• 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)

NOTE: If the battery voltage is low, diagnostic trouble codes will
not be set. Check the battery if scan tool MB991958 does not
display.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "System select" from the start-up screen.
4. Select "From 2006 MY" of "Model Year." When the "Vehicle

Information" is displayed, check the contents.

5. Select "Meter" from "System List," and press the "OK"

button.
NOTE: When the "Loading Option Setup" list is displayed,
check the applicable item.

6. Select "Diagnostic Trouble Code."
7. If a DTC is set, it is shown.
8. Choose "Erase DTCs" to erase the DTC.

AC608435

Data link connector

MB991827

MB991824

MB991910

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

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HOW TO DIAGNOSE THE CAN BUS LINES

Required Special Tools:

• 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)

1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "CAN bus diagnosis" from the start-up screen.
4. When the vehicle information is displayed, confirm that it

matches the vehicle being diagnosed.

• If they match, go to Step 8.

• If not, go to Step 5.

5. Select the "view vehicle information" button.
6. Enter the vehicle information and select the "OK" button.
7. When the vehicle information is displayed, confirm again

that it matches the vehicle being diagnosed.

• If they match, go to Step 8.

• If not, go to Step 5.

8. Select the "OK" button.
9. When the optional equipment screen is displayed, choose

the one which the vehicle is fitted with, and then select the
"OK" button.

CHECK OF FREEZE FRAME DATA

The freeze frame data can be checked by using scan
tool MB991958.

When detecting fault and storing the diagnostic trou-
ble code, the ECU connected to CAN bus line
obtains the data before the determination of the diag-
nostic trouble code and the data when the diagnostic
trouble code is determined, and then stores the ECU
status of that time. By analyzing each data from scan
tool MB991958, the troubleshooting can be per-
formed more efficiently. The displayed items are as
the table below.

Display item list

Item No.

Item name

Data item

Unit

Odometer

Total driving distance after the diagnostic trouble
code is generated

Ignition cycle

Number of times the ignition switch is turned "ON" or
"LOCK (OFF)" after the past failure transition

Number of
counts is
displayed.

Accumulated minute Cumulative time for current malfunction of

diagnostic trouble code

min

RADIO AND CD PLAYER

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DIAGNOSTIC TROUBLE CODE CHART

M1544012900218

CAUTION

On troubleshooting, if the ignition switch is
turned ON while disconnecting connector(s),
diagnostic trouble code(s) associated with other
system may be set. On completion, confirm all
systems for diagnostic trouble code(s). If diag-
nostic trouble code(s) are set, erase them all.

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC U0019: Bus off (CAN-B)

CAUTION

• If DTC U0019 is set, be sure to diagnose the

CAN bus line.

• When replacing the ECU, always check that

the communication circuit is normal.

TROUBLE JUDGMENT

When the radio and CD player is returned from the
bus off state, or when the bus error is indicated to the
radio and CD player state, the DTC U0019 (CAN-B)
is set.

COMMENTS ON TROUBLE SYMPTOM

The radio and CD player, power supply for the radio
and CD player, ground circuit, or CAN bus line may
have a problem.

PROBABLE CAUSES

• Malfunctions of radio and CD player

• Malfunction of CAN bus line wiring harness and

connector

DTC No.

Description

Reference page

U0019

Bus off (CAN-B)

P.54A-288