rear MITSUBISHI LANCER EVOLUTION 2007 Service Repair Manual

REAR AXLE -Lubricants/Sealants/Special tools27B-4
ItemQuantity Specified lubricants
Vehicles with
ACDand
Hydraulic piping fluidATF-SP™1L
ACDand
AY CTorque transfer mechanism oil
seal lipsVaselineAs required
B.J. jointRepair kit grease85±10 g
T.J. jointRepair kit grease105±10 g
SEALANTS
ItemsSpecified sealantsRemarks
Vehicles with me-
chanicalLSD
Vent plug3M ATD Part No. 8661, 8663 or
equivalent
Semi-drying sealant
chanicalLSD
Differential cover assembly
equivalent
Vehicles with ACD
andAYC
Vent plug
andAYC
Differential carrier cover
mounting part
Vehicles with me-
chanical LSDDrive gear and differential
case mounting part3M Stud Locking 4170 or equivalentAnaerobic sealant
SPECIAL TOOLS
ToolNumberNameUse
MB991502MUT-IIsub as-
semblyInspection of AYC (diagnosis display by
MUT-II)
MB991529Diagnosis code
check harnessInspection of AYC
(diagnosis display by ACD mode indicator
lamp)
MD998330
(MD998331)Oil pressure gaugeHydraulic pressure measurement <vehicles
with AYC>
MB991705Hose adapter
MB990925Bearing and oil
seal installer setRemoval of wheel bearing

REAR AXLE -Special Tools27B-5
Tool UseName Number
MB991115Oil seal installerPress-fitting of oil seal
(AYC differential: used in combination with
MB990938)
MD998812Installer capPress-fitting of oil seal
(torque transfer mechanism of vehicles with
AYC)
MD998813Installer100
MD998829Installer adapter
(60)
MB990767Front hub and
flange yoke holderRemoval, installation of the drive shaft nut
A
B
MB990241
A: MB990242
B: MB990244Rear axle shaft
puller
A:Puller shaft
B:Puller barDRemoval of drive shaft
DRemoval of rear hub assembly
MB991354Puller body
A
CB
00005697
A: MB991017
B: MB990998
C: MB991000A,B: Front hub re-
mover and in-
staller
C: SpacerDTemporary fixing of wheel bearing
DMeasurement of wheel bearing rotation
starting torque
DMeasurement of wheel bearing axial play
Use MB991000 (component of MB990998)
for the spacer.

REAR AXLE -Special Tools27B-6
ToolNumberNameUse
MB990685Torque wrenchMeasurement of the starting torque of wheel
bearing
MB990326Preload socket
MB991113 or
MB990635Steering linkage
pullerDisconnection of ball joint
MB990641Lower arm bush
(A) remover & in-
stallerRemoval and press-fitting of differential
support member bush
MB991439Bush remover &
installerRemoval and press-fitting of differential
support arm bush
MB991460PlugPrevention of differential oil from being
discharged and entry of foreign matter <AYC
differential>
MB990909Working baseSupporting of the differential carrier
MB991116AdapterSupport of differential carrier assembly
MB990810Side bearing pullerDRemoval of the side bearing inner race
DRemoval of the companion flange

REAR AXLE -Special Tools27B-7
Tool UseName Number
MB990850End yoke holderDRemoval of the self-locking nut
DAdjustment of the drive pinion turning
torque
MB990339Bearing pullerDrive pinion rear bearing inner race removal
MB990648Bearing remover
B A
MB990835
A: MB990836
B: MB990392Drive pinion setting
gauge set
A: Drive pinion
gauge assem-
bly
B: Cylinder
gaugeAdjustment of drive pinion height
MB990988Side gear holding
tool setMeasurement of clutch plate preload (vehicles
with mechanical LSD)
MB990728Side & rear bearing
inner race installerPress-fitting of drive pinion rear bearing inner
race
MB990727Oil seal installerPress-fitting of drive pinion oil seal
MB990813Ta pRemoval of adhesive

REAR AXLE -Special Tools/Troubleshooting <AYC>27B-8
NumberNameO.D.mm
BoxMB990551Box–
CBaseMB990989Base–
ABCBase
MB990990Tool A25A
Tool
MB990991Tool B28
ToolMB990992Tool C31
Installer adapterBrass bar
Bar (one-touch type) AB
C
Toolbox
Tool numberO.D.mmTool numberO.D.mm
AMB99092639AMB99093363.5
MB99092745MB99093467.5
MB99092849.5MB99093571.5
MB99092951MB99093675.5
MB99093054MB99093779
MB99093157BMB990938-
MB99093261CMB990939-
TROUBLESHOOTING <AYC>
BASIC TROUBLESHOOTING CONDITIONS
Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points.
NOTE
Before starting the troubleshooting procedure, make sure that the following items have been checked
okay.
DThe correct steering wheel has been properly installed in the neutral position of the steering column
shaft.
DTire and wheel sizes are correct with correct specifications. Inflation pressure, balance, and wear
conditions are okay.
DWheel alignment is correct.
DThe engine, suspension, and other parts have not been remodeled so as to affect the AYC system.
DIAGNOSIS FUNCTION
READING THE DIAGNOSIS CODES
Read the diagnosis code using MUT-IIor ACD mode indicator
lamp. (Refer to GROUP 00 – How to Use Troubleshooting/
Inspection Service Points.)
NOTE
Connect the MUT-IIto the 16-pin diagnosis connector.

REAR AXLE -Troubleshooting <AYC>27B-9
ERASING THE DIAGNOSIS CODES
Connect the MUT-IIto the 16-pin diagnosis connector and
erase the diagnosis code. (Refer to GROUP 00 – How to
Use Troubleshooting/Inspection Service Points.)
Caution
Turn the ignition switch to the LOCK (OFF) position before
connecting or disconnecting the MUT-II.
INSPECTION CHART FOR DIAGNOSIS CODE
Diagnosis
code No.Diagnosis itemsReference page
12Power supply voltage (valve power supply) systemopen- or short-circuitRefer to
GROUP22
13Failsafe relay system <inside of 4WD-ECU>open- or short-circuit
GROUP22.
21FR wheel speed sensor systemopen- or short-circuit
22FL wheel speed sensor systemopen- or short-circuit
23RR wheel speed sensor systemopen- or short-circuit
24RL wheel speed sensor systemopen- or short-circuit
25Wrong-diameter tire
26Wheel speed sensor (faulty output signal)
31Steer sensor (ST-1, ST-2, ST-N) systemopen- or short-circuit
32Steer sensor (ST-N) systemshort-circuit
33fixed
34Steer sensor (ST-1, ST-2) systemshort-circuit or output
fixed
41TPS systemopen-circuit or ground
42short-circuit
45Pressure sensor systemopen-circuit or ground
46open earth
47abnormal power supply
51G sensor (longitudinal) systemopen- or short-circuit
52defective sensor
56G sensor (lateral) systemopen- or short-circuit
57defective sensor

REAR AXLE -Troubleshooting <AYC>27B-10
Diagnosis
code No.Reference page Diagnosis items
61Stop lamp switch systemopen-circuitRefer to
GROUP22
62ACD mode changeover switchstuck
GROUP22.
63Parking brake switch systemshort-circuit or not re-
turned
65ABS monitor systemopen-circuit or defective
ABS
71Proportioning valve <AYC> systemopen- or short-circuit27B-11
72Directional control valve (right) systemopen- or short-circuit27B-12
73Directional control valve (left) systemopen- or short-circuit27B-13
74Proportioning valve <ACD> systemopen- or short-circuitRefer to
GROUP22
81Electric pump relay systemopen- or short-circuit
GROUP22.
82electric pump malfunction
or pressure sensor defect
84AYC control error–
85ACD control errorRefer to
GROUP 22.
NOTE
Code No.84 is not a code number output due to malfunction, but a code number output when control
for the 4WD-ECU to protect the AYC is stopped in excessive driving. AYC control can be recovered
by turning the ignition switch ON to OFF to ON.

REAR AXLE-Troubleshooting <AYC>27B-11
INSPECTION PROCEDURES FOR DIAGNOSIS CODES
Code No. 71 Proportioning valve systemProbable cause
This code is output when the proportioning valve control circuit is open- or short-circuited.DDefective proportioning valve
DDefective harness or connector
DDefective 4WD-ECU
<Vehicles with ACD + AYC>
NG
Check and repair the harness between
proportioning valve and body earth.
OK
Check the trouble symptom.
OK
Measure at proportioning valve con-
nector F-28.
DDisconnect the connector and
measure at the harness side.
DResistance between 2 and body
earth
OK:2Ωor lessNGCheck the following connectors:
F-28, F-24NG
Repair
Measure at proportioning valve con-
nector F-28.
DDisconnect the connector and
measure at the proportioning valve.
DResistance between 2 and 3
OK:4.7Ωor lessNGReplace the hydraulic unit. (Refer to
P.27B-61.)
OK
Replace 4WD-ECU.
NG
Check the harness between propor-
tioning valve and 4WD-ECU.NG
Repair
OK
Check the trouble symptom.
OK
Check the following connectors:
C-44, C-130*, C-134, F-24, F-28NG
Repair
*: L.H. drive vehicles
<Vehicles with ACD>
OK
Replace 4WD-ECU.
OK
Check the following connector:
C-43NG
Repair
OK
Check and repair the harness between
4WD-ECU and body earth.
Measure at 4WD-ECU connector
C-43.
DDisconnect the connector and
measure at the harness side.
DResistance between 50 and body
earth
OK:2Ωor lessNGCheck the following connector:
C-43NG
Repair
NG
Repair

REAR AXLE -Troubleshooting <AYC>27B-12
Code No. 72 Directional control valve (right) systemProbable cause
This code is output when the directional control valve (right) control circuit is open-
or short-circuited.DDefective directional control valve (right)
DDefective harness or connector
DDefective 4WD-ECU
<Vehicles with ACD + AYC>
NG
Check and repair the harness between
directional control valve (right) and
body earth.
OK
Check the trouble symptom.
OK
Replace 4WD-ECU.
NG
Check the harness between directional
control valve (right) and 4WD-ECU.NG
Repair
OK
Check the trouble symptom.
OK
Check the following connectors:
C-44, C-130*, C-134, F-24, F-26NG
Repair
OK
Measure at directional control valve
(right) connector F-26.
DDisconnect the connector and
measure at the directional control
valve side.
DResistance between 1 and body
earth
OK:2Ωor lessNGCheck the following connectors:
F-26, F-24NG
Repair
Measure at directional control valve
(right) connector F-26.
DDisconnect the connector and
measure at the directional control
valve side.
DResistance between 1 and 2
OK:19 - 21Ωor lessNGReplace the hydraulic unit. (Refer to
P.27B-61.)
*: L.H. drive vehicles
<Vehicles with ACD>
OK
Check and repair the harness between
4WD-ECU and body earth.
Measure at 4WD-ECU connector
C-43.
DDisconnect the connector and
measure at the harness side.
DResistance between 50 and body
earth
OK:2Ωor lessNGCheck the following connector:
C-43NG
Repair
OK
Replace 4WD-ECU.
OK
Check the following connector:
C-43NG
RepairNG
Repair

REAR AXLE -Troubleshooting <AYC>27B-13
Code No. 73 Directional control valve (left) systemProbable cause
This code is output when the directional control valve (left) control circuit is open-
or short-circuited.DDefective directional control valve (left)
DDefective harness or connector
DDefective 4WD-ECU
<Vehicles with ACD + AYC>
NG
Check and repair the harness between
directional control valve (left) and body
earth.
OK
Check the trouble symptom.
OK
Replace 4WD-ECU.
NG
Check the harness between directional
control valve (left) and 4WD-ECU.NG
Repair
OK
Check the trouble symptom.
OK
Check the following connectors:
C-44, C-130*, C-134, F-24, F-25NG
Repair
OK
Measure at directional control valve
(left) connector F-25.
DDisconnect the connector and
measure at the directional control
valve side.
DResistance between 1 and body
earth
OK:2Ωor lessNGCheck the following connectors:
F-25, F-24NG
Repair
Measure at directional control valve
(left) connector F-25.
DDisconnect the connector and
measure at the directional control
valve side.
DResistance between 1 and 2
OK:19 - 21Ωor lessNGReplace the hydraulic unit. (Refer to
P27B-61.)
*: L.H. drive vehicles
<Vehicles with ACD>
OK
Check and repair the harness between
4WD-ECU and body earth.
Measure at 4WD-ECU connector
C-43.
DDisconnect the connector and
measure at the harness side.
DResistance between 50 and body
earth
OK:2Ωor lessNGCheck the following connector:
C-43NG
Repair
OK
Replace 4WD-ECU.
OK
Check the following connector:
C-43NG
RepairNG
Repair