Mitsubishi Lancer Evolution 8 MR. Manual - part 20

 

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Mitsubishi Lancer Evolution 8 MR. Manual - part 20

 

 

MANUAL TRANSMISSION  - TROUBLESHOOTING

22-18

Code No.74  Proportional valve <ACD> system

Assumed cause of concern

In cases where the proportional valve <ACD> control circuit
is shorting, code No.74 is output.

• Proportional valve <ACD> malfunction
• Harness, connector malfunction
• 4WD-ECU malfunction

Remarks

*2

: refer to ’01-1 Lancer Evolution VII Service Manual (No.1036K02)

MUT-II/III Service data
• No.11 Proportional valve current <ACD>

OK: P.22-32 Refer to (Service Data List)

*2

OK -> Intermittent malfunction

Measurement at F-25 proportional valve <ACD>
connector
• Undo connector, take measurement on proportional

valve side

• Resistance between 2 -3

OK: 4.7

or less

Measurement at F-25 proportional valve <ACD>
connector
• Undo connector, take measurement on harness side
• Resistance between 2 – body earth

OK: 2

or less

Connector check: F-25, F-22 
NG -> repair

Check harness between proportional valve <ACD> -
body earth
• Check earth wire to see if broken or damaged
NG -> repair 

Replace hydraulic unit

Connector check: F-25, F-22, C-30, C-133, C-38
NG -> repair

Check harness between 4WD-ECU and Proportional
valve <ACD>
• Check output wire to see if broken, shorting, or

damaged

NG -> repair

MUT-II/III Service data
• No.11 Proportional valve current <ACD>

OK: refer to P.22-32 (Service Data List)

*2

NG: replace 4WD ECU
OK -> Intermittent malfunction

Code No.81  Electric pump relay system

Assumed cause of concern

Output when the circuit on the pump relay coil side is broken
or shorting.

• Electric pump relay malfunction
• Harness, connector malfunction
• 4WD-ECU malfunction

Remarks

*2

: refer to ’01-1 Lancer Evolution VII Service Manual (No.1036K02)

MUT-II/III actuator test
• No.04 Electric pump operation

OK: the electric pump operating sound is audible

OK -> Intermittent malfunction

Check electric pump relay (refer P.22-53)

*2

Measurement at B-127 electric pump relay connector
• Undo connector, take measurement on harness side
• Resistance between 1 – body earth

OK: 2

or less

Connector check: B-127
NG -> repair

Check harness between electric pump relay - body earth
• Check earth wire to see if broken or damaged
NG -> repair 

Replace electric pump relay

Connector check: B-127, C-38
NG -> repair

Check harness between 4WD-ECU and electric pump relay
• Check power supply wire to see if broken, shorting,

or damaged

NG -> repair

MUT-II/III Actuator test
• No.04 Electric pump operation

OK: the electric pump operating sound is audible

NG: replace 4WD ECU
OK ->

NG

OK

OK

OK

OK

OK

NG

OK

OK

NG

NG

OK

OK

OK

NG

OK

MANUAL TRANSMISSION  - TROUBLESHOOTING

22-19

3. Fault classification

4. Fault classification procedure

Checking procedure 2

Fault

Check procedure No.

Page ref.

No communication between MUT-II/III and 4WD-ECU

2

22-19

When ignition switch is ON, (engine stopped), ACD mode indicator lamp does not come on.

3

22-20

Even after engine starts, at least 2 ACD mode indicator lamps remain lit 

4

22-20

No communication between MUT-II/III and 4WD-ECU

Assumed cause of concern

Diagnosis output circuit, 4WD-ECU power supply circuit,
earth circuit or 4WD-ECU malfunctions are possible.

• Harness, connector malfunction
• 4WD-ECU malfunction

Measurement at C-122, diagnosis code connector and
C-37 4WD-ECU connector.
• Resistance between C-122 1 and C-37 46
• Resistance between C-122 7 and C-37 35

OK: 2

or less

Measurement at C-38 4WD-ECU connector
• Measure ECU terminal voltage
• Ignition switch ON
• Voltage between 13 – body earth

OK: battery voltage

Measurement at C-37, C-38, 4WD-ECU connector
• Undo connector, take measurement on harness side
• Resistance between C-38 26 and body earth
• Resistance between C-37 42 and body earth
• OK: 2

or less

Connector check: C-37, C-38 
NG -> repair

Fault confirmation 

Replace 4WD-ECU

Connector check: C-37, C-23, C-22, C-20, C-122, 
C-110, C-06
NG -> repair

Fault confirmation

Harness check between 4WD-ECU and diagnosis
connector
• Check output wire to see if broken or damaged
• NG -> repair

Connector check: C-38, C212, C-210, C133
NG -> repair

Fault confirmation

Check harness between ignition switch and 4WD-ECU
• Check power supply wire to see if broken or

damaged

NG -> repair

Connector check: C-37, C-38
NG -> repair

Fault confirmation

Check harness between 4WD-ECU – earth
• Check earth wire to see if broken or damaged
NG -> repair

OK

OK

OK

OK

NG

OK

NG

NG

OK

OK

NG

NG

NG

NG

MANUAL TRANSMISSION  - TROUBLESHOOTING

22-20

The ACD mode injector lamp does not come on when the ignition
switch is ON (engine stopped)

Assumed cause of concern

ACD mode indicator lamp circuit or 4WD-ECU malfunctions are possible.

• Harness, connector malfunction
• ACD mode indicator lamp ASSY malfunction
• 4WD-ECU malfunction

Measurement at C-106, combi. meter connector.
• Undo connector, take measurement on harness side
• Ignition switch ON
• Voltage between 9 – body earth

OK: battery voltage

Measurement at C-37 4WD-ECU connector
• Undo connector, take measurement on harness side
• Ignition switch ON
• Earth 40, 51, 52 to body earth

OK: indicator lamp on

Connector check: C-37
NG -> repair

Fault confirmation 

Replace 4WD-ECU

Connector check: C-106, C-212, C-210
NG -> repair

Fault confirmation

Check harness between ignition switch – ACD mode
indicator lamp ASSY
• Check power supply wire to see if broken or

damaged

• NG -> repair

Check ACD mode indicator lamp ASSY
NG -> replace

Connector check: C-37, C-133, C-106
NG -> repair

Fault confirmation

Check harness between ACD mode indicator lamp
ASSY  - 4WD-ECU
• Check output wire to see if broken or damaged

When C-37  4WD-ECU connector is undone, do all
ACD mode indicator lamps all go out?

Replace 4WD-ECU

Check connector: C-37, C-133, C-106
NG -> repair

Fault confirmation 

Check harness between ACD mode indicator ASSY  -
4WD-ECU
• Check output wire for earthing, shorting
NG -> repair

Replace ACD mode indicator ASSY

Checking procedure 3

Checking procedure 4

Even after engine starts, at least 2 ACD mode indicator lamps
remain lit

Assumed cause of concern

ACD mode indicator lamp output circuit malfunction is possible.

• Harness, connector malfunction
• 4WD-ECU malfunction
• ACD mode indicator lamp ASSY malfunction

Remarks
This phenomenon is limited to when communication with MUT-II/III is possible (4WD-ECU power supply normal), and diagnosis
code is normal/correct.

OK

NG

NG

NO

OK

OK

NG

NG

OK

OK

OK

NG

YES

OK

NG

OK

33A-1

FRONT SUSPENSION – GENERAL, SPECIAL TOOLS

SECTION 33A

FRONT SUSPENSION

CONTENTS

General........................................................1
Special tools...............................................1

Strut Assembly...........................................2

General

Important servicing information has been added along with the adoption of Bilstein shock absorbers. However, apart from the
information below, other servicing information remains unchanged.

Special Tools

Tool

Number

Name

Details

MB991367

Special spanner

Dismantling and assembly of strut ASSY.
Vehicles fitted with Bilstein shock absorbers

MB991385

Pin

 

 

 

 

 

 

 

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