MANUAL TRANSMISSION - Troubleshooting
Item
no.Normal conditions Check condition Check item
19Pressure sensor power
supplyIgnition switch: ONApprox.5 V
20Valve power supplyIgnition switch: ONSystem voltage
21Steering wheel sensor
voltage
are displayed alter-
nately.
22Steering wheel sensor
voltage
are displayed alter-
nately.
23Steering wheel sensor
ltSTN
Ignition switch: ONSteering wheel: Neutral1-2Vg
voltage
g
Steering wheel: Turn2.5 - 4.5 V
51Idle switchIgnition switch: ONAccelerator pedal: Full
closedON
Accelerator pedal: PressOFF
52Steering wheel sensor
STN
Ignition switch: ONsteering wheel: NeutralONg
g
Steering wheel: Turn from
the neutral positionOFF
53Steering wheel sensor
played alternaltely.
54Steering wheel sensor
played alternately
55Steering wheel sensor
learning
tral position learning exe-
cutedON
Steering wheel sensor neu-
tral position learning unex-
ecutedOFF
56Stop lamp switchIgnition switch: ONBrake pedal: DepressONppg
Engine: StoppedBrake pedal: ReleaseOFF
57Motor monitorElectric pump motor is currently operatingON
Electric pump motor is currently not operatingOFF
58Oil pressure stateElectric pump motor is currently operatingLOWp
Electric pump motor is currently not operatingHIGH
59Directional valve
Ri ht
AYC clutch right side is currently operatingON
60Directional valve
Lft
AYC clutch left side is currently operatingON
61ABS monitorABS is currently operatingON
ABS is currently not operatingOFF
62Parking brake switchIgnition switch: ONParking brake lever: PullONgg
Engine:StoppedParking brake lever: Re-
leaseOFF
63ACD mode switchIgnition switch: ONACD mode switch: PressONg
Engine:StoppedACD mode switch: ReleaseOFF
MANUAL TRANSMISSION - Troubleshooting
ACTUATOR TEST JUDGEMENT VALUE
Item
no.Check itemTest descriptionNormal state
01Bleeding
according to the steering angle, and operate
the Proportional valve for five minutes.Make sure no air leaks from the bleeder
screw on the transfer.
02Bleeding
according to the steering angle, and operate
the directional valve for five minutes.Make sure no air leaks from the bleeder
screw on the torque transfer differential.
03Check the oil vol-
umeOperate the directional valve to the left and
right for 20 seconds.Check that the oil volume of the reservoir
tank is appropriate.
04Electric pump
driveOperate the electric pump for 5 seconds.Operation sounds of the electric pump
can be heard.
05Check the opera-
tions of the ACDOperate the Proportional valve
supply the maximum oil pressure to the multi
plate clutch.9Generate the tight corner braking
phenomenon.
06Check clutch op-
erations
maximum oil pressure to the left clutch.When the wheels are lifted, speed
difference will occur between the rear
left and right wheels.
07Check clutch op-
erations
maximum oil pressure to the right clutch.When the wheels are lifted, speed
difference will occur between the rear
left and right wheels.
08Control OFFTurn OFF the electric pump relay, and turn
OFF the control of the ACD and AYC.In actual driving, there is difference
between control ON and OFF.
(1) The actuator test can be executed only when all the following conditions are satisfied.
DAll wheel speed sensor inputs below 20 km/h
DNo system malfunction detected
DSteering angle is within±30 degrees from the neutral position
(2) When the actuator test corresponds to one of the following conditions, forced driving will be cleared.
DWhen any one of the wheel speed sensor input is detected to be above 20 km/h (excluding
Item No.08 “Control OFF”.)
DWhen system malfunction is detected (excluding diagnostic code No.82, 84, and 85)
DWhen the forced drive time is exceeded
DWhen the MUT-IIis removed
DWhen the Clear key of the MUT-IIis operated
MANUAL TRANSMISSION - Troubleshooting
Termi-
nal no.Normal state Check condition Check item
24*2Longitudinal G sensor
earth, lateral G sensor
earthAny time1 V or less
26ECU earthAny time1 V or less
31ECU backup power
supplyAny timeSystem voltage
32Pressure sensorIgnition switch: ON0.5 - 1.5 V
33Steering wheel sensor
4.5 V flushing
34Steering wheel sensor
4.5 V flushing
35Diagnosis data input/
output--
36Idle switchIgnition switch: ONAccelerator pedal: Full closed1 V or lessg
Accelerator pedal: Depress4.5 - 5.0 V
37Parking brake switchIgnition switch: ONParking brake lever: Pull1 V or lessgg
Parking brake lever: ReleaseSystem voltage
38Stop lamp switchIgnition switch: ONBrake pedal: DepressSystem voltageppg
Brake pedal: Release1 V or less
39TPSIgnition switch: ONAccelerator pedal: Full closed0.5 - 0.7 Vg
Accelerator pedal: Full throttle4.5 - 5.5 V
40ACD mode indicator
lamp
TARMAC0V
p
ACD mode indicator lamp position:
Except for aboveApprox. 10.5 V
42ECU earthAny time1 V or less
43Pressure sensor earthAny time1 V or less
44Steering wheel sensor
STN
Ignition switch: ONSteering wheel: Neutral1-2Vg
g
Steering wheel: Turn from the
neutral position2.5 - 4.5 V
46Diagnosis control--
47ACD mode switchIgnition switch: ONSwitch: PressSystem voltageg
Switch: Release0V
49*1ABS monitorWith ABS not activeSystem voltage
With ABS active1.5 V or less
50*2EarthAny time1 V or less
51ACD mode indicator
lamp
SNOW0V
p
ACD mode indicator lamp position:
Except for aboveApprox. 10.5 V
52ACD mode indicator
lamp
GRAVEL0V
p
ACD mode indicator lamp position:
Except for aboveApprox. 10.5 V
MANUAL TRANSMISSION - On-vehicle Service22A-42
BLEEDING
1. Lift up the vehicle.
2. Set the MUT-IIto the 16-pin diagnosis connector.
Caution
Turn the ignition switch to the “LOCK”(OFF) position
before connecting or disconnecting the MUT-II.
3. Turn the ignition switch to the “ON” position.
4. Set the steering wheel in the straight-ahead position.
5. Perform the MUT-IIactuator test (Item No.02), and forcibly
drive the hydraulic unit.
NOTE
(1) The actuator test (Item No.01: Bleeding Mode) will
be performed for 5 minutes, after which it will be
cleared automatically. Drive can also be cleared during
forced driving using the clear key of the MUT-II.
(2) If the hydraulic unit function has been stopped by
fail-safe, the hydraulic unit cannot be forcibly driven.
6. Remove the cap of the bleeder screw on the transfer,
and connect the vinyl hose.
7
.Slowly turn the steering wheel to the left or right from
the neutral state. Loosen the bleeder screw, and check
that air is discharged together with the fluid.
8
.After the air is discharged, tighten the bleeder screw,
and return the steering wheel to the neutral state.
Caution
During bleeding, replenish the fluid so that some
always remains in the oil reservoir.
9. Repeat steps 6 and 7 several 2 to 3 times, and after
checking that no more air mixes in, tighten the bleeder
screw at the specified torque.
Tightening torque: 5±1 N·m
10. After bleeding, check the fluid level. (Refer to P. 22A-41.)
Caution
If bleeding is not performed completely, noise may
be produced from the hydraulic unit, or the durability
of the pump, etc. may drop.
11. On vehicles with AYC, perform bleeding when the
hydraulic unit is removed. (Refer to GROUP 27B -
On-vehicle Service.)
ACD OPERATION CHECK
1. Lift up the vehicle.
2
.Set the MUT-IIto the 16-pin diagnosis connector.
Caution
Turn the ignition switch to the “LOCK”(OFF) position
before connecting or disconnecting the MUT-II.
3. Start the engine.
Bleeder screw
Front exhaust pipe
MANUAL TRANSMISSION - On-vehicle Service22A-43
4. Set the gear to the 2nd gear or above, operate the MUT-II,
and check from the service data (Item No.09) that the
wheel speed is within 10 km/h to 20 km/h.
NOTE
(1) Set the steering wheel to the neutral position
(2) The ACD may continue operating (operation sounds
can be heard) when the steering wheel is steered,
this is not a system fault. In this case, set the steering
wheel to the neutral position, and perform the following
operations to stop the ACD.
DRelease the clutch.
DSet the gear to “N”.
DStop the engine
5. Perform the MUT-IIactuator test (Item No.05), and forcibly
drive the transfer.
NOTE
(1) The actuator test (Item No. 05: ACD Operation Check
Mode) is performed for 1 minute, after which it will
be cleared automatically. Drive can also be cleared
during forced driving using the clear key of the MUT-II.
(2) If the hydraulic unit function has been stopped by
fail-safe, the transfer cannot be forcibly driven.
6. Check that the front and rear wheel speeds satisfy the
following in the MUT-IIactuator test (Item No.05).
The front wheel will be faster than the back wheels by
more than 2 km/h.
NOTE
If the above are not satisfied, check the oil pressure as
the system may be faulty.
HYDRAULIC PRESSURE CHECK
1. Lift up the vehicle.
2. Set the MUT-IIto the 16-pin diagnosis connector.
Caution
Turn the ignition switch to the “LOCK”(OFF) position
before connecting or disconnecting the MUT-II.
3. Disconnect the hydraulic unit and transfer connector
assembly, and connect the special tool to the hydraulic
unit.
4. Turn the ignition switch to “ON”.
5. Perform the MUT-IIactuator test (Item No.05), and forcibly
drive the hydraulic unit.
NOTE
(1) The actuator test (Item No. 05 ACD Operation Check
Mode) is performed for 1 minute, after which it will
be cleared automatically. Drive can also be cleared
during forced driving using the clear key of the MUT-II.
MD998330
MB991705
MANUAL TRANSMISSION -Sensor, Switch and Relay
SENSOR, SWITCH AND RELAY
REMOVAL AND INSTALLATION
Caution
Before removing the steering wheel and air bag module assembly, be sure to refer to GROUP
52B Precautions in Servicing and Airbag Module Clock Spring.
1
3
2
4
5
Parking brake lever
Steering wheel sensor removal
steps
DSteering wheel and column cover
(Refer to GROUP 37A.)
1. Steering wheel sensor
G sensor removal steps
DFloor console (Refer to GROUP 52A.)
2. Longitudinal G sensor
3. Lateral G sensorElectric pump relay removal
4. Electric pump relay
ACD mode switch removal steps
DInstrument panel ornament (Refer to
GROUP 52A – Instrument Panel.)
5. ACD mode switch
NOTE
For details on the wheel speed sensor, refer to GROUP
35B.
REMOVAL SERVICE POINT
AA"STEERING WHEEL SENSOR REMOVAL
Remove the steering wheel sensor from the column switch.
Caution
Make sure no oil adheres to the steering wheel sensor
because a photocoupler is used.Steering wheel sensor
FRONT AXLE -Service Specifications/Lubricants/Special Tools26-3
SERVICE SPECIFICATIONS
ItemStandard valueLimit
Wheel bearing axial play mm-0.06
WheelbearingrotationstartingtorqueN·m-103orlessWheelbearing rotation startingtorqueN·m-1.03orless
Setting of T.J. boot length mm85±3-
Opening dimension of the
special tool (MB991561) mmWhen the B.J.boot band
(small) is crimped.2.9-
When the B.J.boot band
(big) is crimped.3.2-
Crimped width of the B.J.boot band mm2.4 - 2.8-
LUBRICANTS
ItemsSpecified lubricantsQuantity g
T.J. boot greaseRepair kit grease120±10
B.J.boot greaseRepair kit grease11 0±10
SPECIAL TOOLS
ToolNumberNameUse
MB990767End yoke holderFixing of the hub
MB991618Hub bolt removerRemoval of the hub bolt
MB991113 or
MB990635Steering linkage
pullerDisconnection of ball joint
A
B
MB990241
A: MB990242
B: MB990244Axle shaft puller
A: Puller shaft
B: Puller barDRemoval of the drive shaft
DRemoval of the hub
MB991354Puller bodyDRemoval of the drive shaft
DRemoval of the hub
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
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