2004 MITSUBISHI LANCER EVOLUTION VIII acd

MANUAL TRANSMISSION TROUBLESHOOTING2219
3.Fault classification
4. Fault classification procedure
Checking procedure 2
FaultCheck procedure No.Page ref.
No communication between MUTII/III and 4WDECU22219
When ignition switch is ON, (engine stopped), ACD mode indicator lamp does not come on.32220
Even after engine starts, at least 2 ACD mode indicator lamps remain lit 42220
No communication between MUTII/III and 4WDECUAssumed cause of concern
Diagnosis output circuit, 4WDECU power supply circuit,
earth circuit or 4WDECU malfunctions are possible.• Harness, connector malfunction
•4WDECU malfunction
Measurement at C122, diagnosis code connector and
C37 4WDECU connector.
• Resistance between C122 1 and C37 46
• Resistance between C122 7 and C37 35
OK:2Ω or less
Measurement at C38 4WDECU connector
•Measure ECU terminal voltage
• Ignition switch ON
OK:battery voltage
Measurement at C37, C38, 4WDECU connector
• Undo connector, take measurement on harness side
• Resistance between C38 26 and body earth
Connector check:C37, C38
NG > repair
Fault confirmation Replace 4WDECU
Connector check:C37, C23, C22, C20, C122,
C110, C06
NG > repair
Fault confirmationHarness check between 4WDECU and diagnosis
connector
Connector check:C38, C212, C210, C133
NG > repair
Fault confirmation
Check harness between ignition switch and 4WDECU
•Check power supply wire to see if broken or
damaged
NG > repair
Connector check:C37, C38
NG > repair
Fault confirmation
Check harness between 4WDECU – 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 TROUBLESHOOTING2220
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 4WDECU malfunctions are possible.• Harness, connector malfunction
• ACD mode indicator lamp ASSY malfunction
• 4WDECU malfunction
Measurement at C106, combi. meter connector.
• Undo connector, take measurement on harness side
• Ignition switch ON
OK:battery voltage
Measurement at C37 4WDECU connector
• Undo connector, take measurement on harness side
• Ignition switch ON
• Earth 40, 51, 52 to body earth
OK:indicator lamp on
Connector check:C37
NG > repair
Fault confirmation Replace 4WDECU
Connector check:C106, C212, C210
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:C37, C133, C106
NG > repair
Fault confirmation
Check harness between ACD mode indicator lamp
ASSY 4WDECU
• Check output wire to see if broken or damaged
When C37 4WDECU connector is undone, do all
ACD mode indicator lamps all go out?
Replace 4WDECU
Check connector:C37, C133, C106
NG > repair
Fault confirmation Check harness between ACD mode indicator ASSY
4WDECU
• 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 litAssumed cause of concern
ACD mode indicator lamp output circuit malfunction is possible.•Harness, connector malfunction
• 4WDECU malfunction
• ACD mode indicator lamp ASSY malfunction
Remarks
This phenomenon is limited to when communication with MUTII/III is possible (4WDECU power supply normal), and diagnosis
code is normal/correct.
OK
NG
NG
NO
OK
OK
NG
NG
OK
OK
OK
NG
YESOK
NG
OK

GENERAL INFORMATION - DETAILS OF CHANGES0-4
Main circuit Name of circuit Page Details of change
Spare Audio connectors -• Change to terminal number in J/C(1)
(C-07) on line inking J/B (general fuse
No.18) and spare audio connector.
(No.3 " No.7)Accessories
Clock -• Change to terminal number in J/C(1)
(C-07) on line inking J/B (general fuse
No.18) and clock. (No.2 " No.6)
Special
EquipmentABS p.3-32
ACD (Vehicles not fitted with
AYC)p.3-40• Circuit changed due to change in
branching point of connector for
4WD-ECU (C-37) (C-38) (from
instrument panel harness to control
harness).
• J/C(6) (C-23) added between ABS-
ECU and 7
th terminal of junction
connector (C-20) between instrument
panel harness and control harness.
• J/C(6) (C-23) added between ABS-
ECU and 22
nd terminal of junction
connector (C-22) between instrument
panel harness and control harness.
ACD, AYC p.3-48• Circuit changed due to change in
branching point of connector for
4WD-ECU (C-37) (C-38) (from
instrument panel harness to control
harness).
• Earth No.13 added
• J/C(6) (C-23) added between 4WD-
ECU and 7
th terminal of junction
connector (C-20) between instrument
panel harness and control harness.
• J/C(6) (C-23) added between 4WD-
ECU and 22
nd terminal of junction
connector (C-22) between instrument
panel harness and control harness.
Intercooler water spray -• Change to terminal number in J/C(1)
(C-07). (No.12 " No.21).
Engine immobiliser system p.3-58• Partial changes due to removal of
DVD-MMCS.
• Partial changes to circuit, due to
change in installation point of
immobiliser ECU.
Spare general connectors -• Change to terminal numbers in J/C(1)
(C-07) on line linking J/B (general
fuse No.18) / special fuse No.15, and
general spare connectors. (No.7 "
No.5), (No.21 " No.12).

GENERAL INFORMATION - LIST OF CIRCUIT DIAGRAMS0-6
Main circuit Name of Circuit Circuit Diagram
Windscreen wipers, washers *2!
Rear wiper, washer!
Demister (vehicle not fitted with fully automatic A/C)!
Demister, door mirror heating elements (vehicle fitted with
fully automatic A/C)!
Safety / Visibility
Electric retractable remote control door mirrors *2
!
Spare Audio connectors *1,2!
DVD-MMCS X
Clock *1,2!
Accessories
Cigar lighter, ashtray illumination light
!
ABS#
ACD (vehicle not fitted with AYC)#
ACD, AYC#
SRS airbags, seatbelt pre-tensioners (vehicle not fitted
with side airbags)!
SRS airbags, seatbelt pre-tensioners (vehicle fitted with
side airbags)!
Sun roof X
Ignition key reminder buzzer!
Intercooler water spray *2!
Engine immobiliser system#
Security alarm!
Spare connectors for fog lights!
Special Equipment
Spare general connectors *2
!

WIRING DIAGRAMS - BOOT INTERIOR1-6
BOOT INTERIOR
F-01 (2) Boot interior light
F-02 (2-grey) High-mount stop light
F-05 (4) Rear wiper motor
F-06 (2) Rear speaker (RH)
F-07 (1) Demister (+)
F-10 (6-black) Rear combination light (RH)
F-11 (1) Book interior light switch
F-12 (2-grey) Licence plate light (RH)
F-13 (2-grey) Licence plate light (LH)
F-14 (2-grey) Junction between floor harness (LH) &
bumper harness
F-15 (6-black) Rear combination light (LH)
F-16 (2) Rear speaker (LH)
F-18 (1-black) Demister (-)
F-19 (2) Windscreen washer motorF-20 (2-green) Rear washer motor
F-21 (2-black) Electrical pump
F-22 (8-grey) Junction between floor harness (LH) and
4WD harness (vehicle with AYC)
F-23 (2-black) Directional valve (left) (vehicle with AYC)
F-24 (2-black) Directional valve (right) (vehicle with AYC)
F-25 (3-black) Proportional valve (for ACD)
F-26 (3-black) Proportional valve (for AYC) (vehicle with
AYC)
F-27 (3-black) Pressure sensor
(2) Spare connector
• Boxed connector numbers indicate newly added connectors.
F-28
Demister earth
Floor
harness (LH)
4WD
harnessBumper
harness
Floor harness
(RH)
Connector
symbol

3-1
SECTION 3
CIRCUIT DIAGRAMS
CONTENTS
J/C ............................................................3-2
Central Junction .....................................3-8
Power Supply ........................................3-10
Engine Control ......................................3-16
Signalling
Stop lights ........................................................3-24
Air Conditioning
Manual A/C ......................................................3-26
Special Equipment
ABS ..................................................................3-32
ACD (vehicle without AYC) ..............................3-40
ACD, AYC ........................................................3-48
Engine immobiliser system ..............................3-58

COMPONENT INSTALLATION POSITIONS - J/C3-2
J/C
Note :
In an actual vehicle, any of the terminals connected in the J/C
may be used. Therefore, the terminal numbers given in the
circuit diagrams may not coincide with the terminal arrangement
in the actual vehicle.
• Windscreen wiper
& washer
• Indicator lights,
hazard warning
lights
• Tail lights, side
lights, licence
plate lights,
lightning monitor
warning buzzer• Fog lights
• Headlights
• Headlight levelling
system
• Rear wiper /
washer
Full auto
A/C
General
spare
connector
Clock
Spare audio
connector
• Warning
lights
• Meter
gauge
• ACD
• Engine
control
J/B
General fuse
()18
General
spare
connector
Fog light
Spare audio
connector
• Demister (Vehicle
w/out full auto A/C)
• Demister, door
mirror heating
element (vehicle
with full auto A/C)
• Heater
• Full auto A/C
• Manual A/C
Cigar lighter
Ashtray
illumination
light
Clock
ACD
Headlight
levelling
system
Indicator light
Hazard
warning lights
Intercooler
water spray
General fuse15
• Meter gauge
• Tail lights, side
lights, licence
plate lights,
lighting monitor
warning buzzer

COMPONENT INSTALLATION POSITIONS - J/C3-3
•Windscreen wiper
& washer
•Indicator lights,
hazard warning
lights
•Tail lights, side
lights, licence
plate lights,
lighting monitor
warning buzzer•Fog lights
•Full auto A/C
•Headlights
•Headlight levelling
system
•Manual A/C
•Cooling•Windscreen wiper
& washer
•Electric retractable
remote control
door mirror
•Cabin lights, boot
interior light,
ignition key
cylinder
illumination light,
door not properly
closed indictor light
•Heater
•Full auto A/C
•Manual A/C
•ABS
•ACD
Meter
gauge
Diagnosis
meterVehicle
speed
sensor
General
spare
connector
Power
window
•Windscreen
wiper
& washer
•Indicator lights,
hazard warning
lights•Tail lights, side
lights, licence
plate lights,
lighting monitor
warning buzzer
•Fog lights
•Headlights•Ignition key
reminder buzzer
•Windscreen wiper
& washer
•Indicator lights,
hazard warning
lights
•Tail lights, side
lights, licence
plate lights,
lighting monitor
warning buzzer•Electric windows
•Fog lights
•Headlights
•Rear wiper /
washer
•Windscreen
wiper &
washer
•Indicator
lights, hazard
warning lights
•Tail lights, side
lights, licence
plate lights,
lighting
monitor
warning
buzzer
•Fog lights
•Headlights
•Rear wiper /
washer
•Reversing light
•Rear wiper /
washer
Rear wiper /
washer
Reversing
lightDiagnosis
connector
J/B
General fuse
()5