Mitsubishi Lancer Evolution VI. Manual - part 2

GENERAL  – 

How to Use This Manual

00-5

Denotes tightening torque.
For bolts and nuts which do not
have a tightening torque listed,
refer to the “Tightening torque”.

indicates that there is

a continuity between the termi-
nals.

indicates terminals to

which battery voltage is applied.

Indicates the
section title.

Indicates the
group num-
ber.

Indicates the
page number.

Indicates the
group title.

Denotes non-reus-
able part.

Repair kit or set parts
are shown. (Only very
frequently used parts
are shown.)

Operating procedures, cau-
tions, etc. on removal, installa-
tion, disassembly and reas-
sembly are described.

The title of the page (following
the page on which the diagram
of component parts is pres-
ented) indicating the locations of
lubrication and sealing proce-
dures.

GENERAL  – 

How to Use Troubleshooting/Inspection Service Points

00-6

HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE
POINTS

Troubleshooting  of electronic control systems for which the MUT-

II

 can be used follows the basic outline

described below. Furthermore, even in systems for which the MUT-

II

 cannot be used, part of these systems

still follow this outline.

TROUBLESHOOTING CONTENTS

1.

STANDARD FLOW OF DIAGNOSIS TROUBLESHOOTING

The troubleshooting sections follow the basic diagnosis flow which is given below. If the diagnosis
flow is different from that given below, or if additional explanation is required, the details of such
differences or additions will also be listed.

Diagnosis method

Gathering information
from the customer.

Check trouble symptom.

Reoccurs

Does not reoccur.

Read the diagnosis code

No diagnosis code
or communication
with MUT-

II

 not

possible

Refer to the INSPECTION
CHART FOR TROUBLE
SYMPTOMS (Refer to
applicable group.)

Diagnosis code
displayed.

Read the diagnosis code

Diagnosis code
displayed.

No diagnosis
code

After taking note of the
malfunction code, erase
the diagnosis code
memory

Recheck trouble symptom.

Diagnosis code
displayed.

Read the diagnosis codes.

No diagnosis
code

Refer to the INSPECTION CHART FOR DIAGNOSIS
CODES (Refer to applicable group.)

INTERMITTENT MALFUNCTIONS (Refer to P.00-13.)

2.

SYSTEM OPERATION AND SYMPTOM VERIFICATION TESTS

If verification of the trouble symptoms is difficult, procedures for checking operation and verifying
trouble symptoms are shown.

3.

DIAGNOSIS FUNCTION

Details which are different from those in the “Diagnosis Function” section on the next page are listed.

GENERAL  – 

How to Use Troubleshooting/Inspection Service Points

00-7

4.

INSPECTION CHART FOR DIAGNOSIS CODES

5.

INSPECTION PROCEDURE FOR DIAGNOSIS CODES

Indicates the inspection procedures corresponding to each diagnosis code. (Refer to P.00-10 for how
to read the inspection procedures.)

6.

INSPECTION CHART FOR TROUBLE SYMPTOMS

If there are trouble symptoms even though the results of inspection using the MUT-

II

 show that all

diagnosis codes are normal, inspection procedures for each trouble symptom will be found by means
of this chart.

7.

INSPECTION PROCEDURE FOR TROUBLE SYMPTOM

Indicates the inspection procedures corresponding to each trouble symptoms classified in the Inspection
Chart for Trouble Symptoms. (Refer to P.00-10 for how to read the inspection procedures.)

8.

SERVICE DATA REFERENCE TABLE

Inspection items and normal judgement values have been provided in this chart as reference information.

9.

CHECK AT ECU TERMINALS

Terminal numbers for the ECU connectors, inspection items and standard values have been provided
in this chart as reference information.

10. INSPECTION PROCEDURES USING AN OSCILLOSCOPE

When there are inspection procedures using an oscilloscope, these are listed here.

DIAGNOSIS FUNCTION

METHOD OF READING DIAGNOSIS CODES

WHEN USING THE MUT-

II

Connect the MUT-

II

 to the diagnosis connector and take a

reading of the diagnosis codes.

Caution
Turn off the ignition switch before connecting or
disconnecting the MUT-

II

.

MUT-

II

GENERAL  – 

How to Use Troubleshooting/Inspection Service Points

00-8

WHEN USING THE WARNING LAMP

1.

Use the special tool to earth No.1 terminal (diagnosis
control terminal) of the diagnosis connector.

2.

To check ABS system, remove the valve relay.

NOTE
That is because the valve relay is off and the warning
lamp remains illuminated if there is a fault in the ABS
system.

3.

Turn on the ignition switch.

4.

Read out a diagnosis code by observing how the warning
lamp flashes.

Applicable systems

System name

Warning lamp name

MPI

Engine warning lamp

AYC

AYC warning lamp

ABS

ABS warning lamp

Indication of diagnosis code by warning lamp

When the diagnosis code No.24 is output

When no diagnosis code is output*

On
Off

1.5 secs.

0.5 sec.

0.5 sec.

Pause
time 3
secs.

Tens
signal

Place
division
2 secs.

Units
signal

On

Off

0.5 sec.

NOTE
*:

Even if the ABS system is normal, removing the valve relay causes the diagnosis code No.52 to
be output.

WHEN USING THE VOLTMETER

Use the special tool to connect the diagnosis output terminals
and the earth terminal of the diagnosis connector to a voltmeter
and take a reading of the diagnosis codes from the movement
of the needle.

Voltmeter connection terminals

System name

Positive connection
terminal

Negative connec-
tion terminal

Full-auto air 
conditioner

11

4 or 5

Diagnosis connector

MB991529

Earth terminal

Full-auto air con-
ditioner  terminal

MB991529