ECU MITSUBISHI LANCER EVOLUTION 2007 Service Repair Manual

MANUAL TRANSMISSION -4WD-ECU with ACD and AYC>22A-55
4WD-ECU AYC>
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
DCowl Side Trim Removal and Installation. (Refer to GROUP 52A - Trims.)
DFront floor Console Removal and Installation. (Refer to GROUP 52A - Floor Console.)
4.9¶0.9 Nm
4WD-ECU
4.9¶0.9 Nm
4WD-ECU

FRONT AXLE -On-vehicle Service26-5
ON-VEHICLE SERVICE
WHEEL BEARING AXIAL PLAY CHECK
1. Remove the disc brake caliper and suspend it with a
wire.
2. Remove the brake disc from the front hub.
3. Attach a dial gauge as shown in the illustration, and then
measure the axial play while moving the hub in the axial
direction.
Limit: 0.06 mm
4. If axial play exceeds the limit, replace the front hub
assembly.
HUB BOLT REPLACEMENT
1. Remove the caliper assembly and secure it with wire
so that it does not fall.
2. Remove the brake disc.
3. Use the special tools to remove the hub bolts.
4. Install the plain washer to the new hub bolt, and install
the bolt with a nut.
MB991618MB990767
Plain
washerMB990767

FRONT AXLE -Hub and Knuckle Assembly26-7
REMOVAL SERVICE POINTS
AA"CALIPER ASSEMBLY REMOVAL
Secure the removed caliper assembly with wire, etc.
Caution
If the vehicle is equipped with the Brembo disc brake,
during maintenance, take care not to contact the parts
or tools to the caliper because the paint of caliper will
be scratched. And if there is brake fluid on the caliper,
wipe out quickly.
AB"CASTLE NUT REMOVAL
Caution
Do not apply the vehicle weight to the wheel bearing
while loosening the castle nut. Otherwise wheel bearing
will be damaged.
AC"TIE ROD END DISCONNECTION
Caution
1. Loosen the nut only; do not remove it from the ball
joint. Otherwise ball joint thread will be damaged.
2. The special tool should be suspended by a cord to
prevent it from coming off.
AD"DRIVE SHAFT REMOVAL
1. Use the special tools to push out the drive shaft from
the hub.
2. Withdraw the drive shaft from the hub by pulling the bottom
of the brake disc towards you, and then remove the hub
retaining bolts.
MB990767
Nut
Cord
Ball joint
MB991113 or
MB990635
MB990242 MB990767MB991354
MB990244
(Three)

FRONT AXLE -Hub and Knuckle Assembly26-8
INSTALLATION SERVICE POINT
"AACASTLE NUT INSTALLATION
1. Be sure to install the castle nut washer in the specified
direction.
2. Using the special tool, tighten the castle nut.
Caution
Before securely tightening the castle nuts, make sure
there is no load on the wheel bearings. Otherwise
wheel bearing will be damaged.
INSPECTION
INSPECTION OF WHELL BEARING ROTATION STARTING
TORQUE
1. Tighten special tools in hub and knuckle assembly to
the specified torque.
2. Measure the wheel bearing rotation starting torque with
special tools.
Limit: 1.03 N·m or less
3. Wheel bearing rotation starting torque must be under
the limit value and there should be no roughness when
rotating the hub.
WHEEL BEARING AXLE PLAY CHECK
1. Secure knuckle in a vice to measure axle play in wheel
bearing.
Limit: 0.06 mm
2. If the limit value of wheel bearing axle plya cannot be
obtained when tightened to the specified torque (245
±29 N·m), check mounting bolt for hub and knuckle
assembly. If no defects are found, replace hub assembly.
MB990767
245±29 N·m
Washer
MB991000
(MB990998)
Bolt
245±29 N·m
Secure bolt and
tighten nut.
MB991017
MB990326
MB990685
MB991000
(MB990998)
245±29 N·m
Secure bolt and
tighten nut.
MB991017

FRONT AXLE -Drive Shaft26-11
REMOVAL SERVICE POINTS
AA"TIE ROD END DISCONNECTION
Caution
1. Loosen the nut only; do not remove it from the ball
joint. Otherwise ball joint thread will be damaged.
2. The special tool should be suspended by a cord to
prevent it from coming off.
AB"DRIVE SHAFT REMOVAL
1. Use the special tools to push out the drive shaft from
the hub.
2. Withdraw the drive shaft from the hub by pulling the bottom
of the brake disc towards you, and then remove the hub
retaining bolts.
3. Remove the drive shaft from the transmission by the
following procedure.
Insert a pry bar between the transmission case and the
drive shaft, and then pry the drive shaft from the
transmission.
Caution
(1) Do not pull on the drive shaft; doing so will damage
the T.J.; be sure to use the pry bar.
(2) When pulling the drive shaft out from the
transmission, be careful that the spline part of
the drive shaft does not damage the oil seal.
(3) Do not apply the vehicle weight to the wheel
bearing while loosening the drive shaft nut.
Otherwise wheel bearing will be damaged. If,
however, the vehicle weight must be applied to
the bearing (because of moving the vehicle),
temporarily secure the wheel bearing by using
the special tool.
Nut
Cord
Ball joint
MB991113 or
MB990635
MB990242 MB990767MB991354
MB990244
(Three)
T.J. assembly
Pry bar
Transmission
MB991000
(MB990998)
MB991017

FRONT AXLE -Drive Shaft26-12
AC"OUTPUT SHAFT REMOVAL
Use the special tool to pull out the output shaft.
Caution
Do not damage the oil seal of the transmission by the
output shaft splines.
INSTALLATION SERVICE POINTS
"AAOUTPUT SHAFT/DRIVE SHAFT INSTALLATION
Caution
Do not damage the oil seal of the transmission by the
output shaft and drive shaft splines.
"BACASTLE NUT INSTALLATION
1. Be sure to install the castle nut washer in the specified
direction.
2. Using the special tool, tighten the castle nut.
Caution
Before securely tightening the castle nuts, make sure
there is no load on the wheel bearings. Otherwise
wheel bearing will be damaged.
Output shaft
MB991721
MB990767
245±29 N·m
Washer

FRONT AXLE -Drive Shaft26-15
"BAT.J. BOOT BAND (SMALL)/T.J. BOOT BAND
(LARGE) INSTALLATION
Set the T.J. boot bands at the specified distance in order
to adjust the amount of air inside the T.J. boot, and then
tighten the T.J. boot bands securely.
Standard value (A): 85±3mm
INSPECTION
DCheck the drive shaft for damage, bending or corrosion.
DCheck the drive shaft spline part for wear or damage.
DCheck the spider assembly for roller rotation, wear or
corrosion.
DCheck the groove inside T.J. case for wear or corrosion.
DCheck the boots for deterioration, damage or cracking.
DCheck the dust cover for damage or deterioration.
B.J. BOOT (RESIN BOOT) REPLACEMENT
1. Remove the B.J. boot bands (large and small).
NOTE
The B.J. boot bands cannot be re-used.
2. Remove the B.J. boot.
3. Wrap a plastic tape around the shaft spline, and assemble
the B.J. boot band and B.J. boot.
4. Install the groove in the center of the small diameter
part of the resin boot by fitting to the groove of the shaft.
5. Turn the adjusting bolt on the special tool so that the
size of the opening (W) is at the standard value.
Standard value (W): 2.9 mm

Tighten the adjusting bolt.

Loosen the adjusting bolt.
NOTE
(1) The value of W will change by approximately 0.7
mm for each turn of the adjusting bolt.
A
MB991561
Stopper
Adjusting bolt W

FRONT AXLE -Drive Shaft26-16
(2) The adjusting bolt should not be turned more than
once.
6. Install the boot band (small) in order to create clearance as
A and B in the illustration.
7. Use the special tool to crimp the B.J. boot band (small).
Caution
(1) Secure the drive shaft in an upright position and
clamp the part of the B.J. boot band to be crimped
securely in the jaws of the special tool.
(2) Crimp the B.J. boot band until the special tool
touches the stopper.
8. Check that the crimping amount (C) of the B.J. boot band
is at the standard value.
Standard value (C): 2.4 - 2.8 mm

Readjust the value of (W) in step 5 according
to the following formula, and then repeat the
operation in step 7.
W = 5.5 mm - C
Example: If C = 2.9 mm, then W = 2.6 mm.

Remove the B.J. boot band, readjust the value
of (W) in step 5 according to the following
formula, and then repeat the operations in
steps 6 and 7 using a new B.J. boot band.
W = 5.5 mm - C
Example: If C = 2.3 mm, then W = 3.2 mm.
9. Check that the B.J. boot band is not sticking out past
the place where it has been installed.
If the B.J. boot band is sticking out, remove it and then
repeat the operations in steps 6 to 8 using a new B.J.
boot band.
B.J. boot
B.J. boot band
(small)
Projection
A
B
MB991561
C

REAR AXLE -Troubleshooting 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 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 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 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 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.