ABS MITSUBISHI 380 2005 Repair Manual

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-40
SIGNAL TERMINAL NO. NORMAL CONDITION
ABS (A-02) SENSOR
FR wheel speed sensor
(A-01)9 2 Less than 2 ohms
10 1 Less than 2 ohms
RR wheel speed sensor
(D-30)8 1 Less than 2 ohms
19 2 Less than 2 ohms
FL wheel speed sensor
(A-04)16 2 Less than 2 ohms
5 1 Less than 2 ohms
RL wheel speed sensor
(D-31)6 1 Less than 2 ohms
17 2 Less than 2 ohms

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-41
VOLTAGE AND SIGNAL CHECK AT ABS-ECU
(A-02) USING OSCILLOSCOPE
NOTE: If the ABS-8 ECU or the active wheel speed
sensor are disconnected, or if the wiring is an open/
short circuit, the ABS 8 ECU will shut off power sup-
ply to the respective wheel speed sensor. All other
wheel speed sensors will operate normally. To
restore the power supply, the ignition switch must be
turned to the "OFF" position then to the "ON" position
again..
WHEEL SPEED SENSOR AIR GAP:
Sensor air gap: (0.2mm - 0.85mm).
.
Measure supply voltage for wheel speed sensor using an
oscilloscope.
(1) ABS-ECU must remain connected.
(2) Wheel speed sensors must emain connected
(3) Remove ABS connector protection cap to access terminal
location from the rear of connector for back-probing.
(4) Using probe (MB991222) , backprobe the wheel speed
sensor voltage supply circuit terminals (16, 9, 6 and 8) at
the ABS-ECU connector (A-02) individually.
(5) Connect oscilloscope (as per figure 1) shows, to the
appropriate terminal positions and check supply voltage
individually with scope.

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-42
Connect oscilloscope to FL sensor signal terminal (16)
at ABS-ECU (A-02)
Connect oscilloscope to FR sensor signal terminal (9) at
ABS-ECU (A-02)
Connect oscilloscope to RL sensor signal terminal (6) at
ABS-ECU (A-02)
Connect oscilloscope to RR sensor signal terminal (8) at
ABS-ECU (A-02)
(6) Turn the ignition switch to the "ON" position.

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-43
(7) The recommended Supply Voltage at terminals 16, 9, 6,
and 8 are:
Set value: 10.0Volts - 14.5Volts
Q: Is the supply voltage within the set value?
YES : Check wheel speed sensor signal at ABS-ECU using
an oscillopscope
NO :
Refer to Power supply systemP.35B-63
Refer to Motor supply systemP.35B-48
Refer to Valve relay systemP.35B-56
Measure wheel speed sensor signals using an
oscilloscope.
NOTE: To check connections of the wheel speed sensors,
remove the rear seat to access the rear wheel speed sen-
sor connectors, and remove inner front guard (splash
shield) to access the front wheel speed sensors.
(1) Wheel speed sensor must remain connected to measure
active sensor.
(2) ABS-ECU must remain connected.
(3) Remove ABS connector protection cap to access terminal
location from the rear of connector for back-probing.
(4) Using probe (MB991222), backprobe the wheel speed
sensor signal circuit terminals (5, 10, 17, 19), and check
individually at the ABS-ECU connector A-02
(5) The wheel to be tested must be free to turn by hand or be
driven by brake dynamometer
(6) Connect oscilloscope (as per figure 2) shows, to the
appropriate terminal positions and check sensor operation
individually with scope.

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-44
Connect oscilloscope to FL sensor signal terminal (5) at
ABS-ECU (A-02)
Connect oscilloscope to FR sensor signal terminal (10)
at ABS-ECU (A-02)
Connect oscilloscope to RL sensor signal terminal (17)
at ABS-ECU (A-02)
Connect oscilloscope to RR sensor signal terminal (19)
at ABS-ECU (A-02)
(7) Recommended Oscilloscope setting:
Y-axis: 2Volts
X-axis: 100ms
(8) Turn the ignition switch to the "ON" position.
(9) Turn wheel by hand at approximately 1 revolution per
second (r/sec) or drive on brake dynamometer at 5km/h.
The measurement reading of the active wheel speed sen-
sors on the oscilloscope should correspond to figure 3
below.
NOTE: If the oscilloscope signal shape is correct and wheel
sensor air gap is within specification, but the voltage values are
either higher or lower as shown in the table below, the wheel
speed sensor must be changed.

TCL SWITCH
TRACTION CONTROL SYSTEM (TCL)13C-49
TCL SWITCH
REMOVAL AND INSTALLATIONM1136001600027
WHEEL SPEED SENSOR
REMOVAL AND INSTALLATIONM1136002500023
Refer to GROUP 35B, Wheel Speed Sensor P.35B-95.
ABS/TCL-ECU
REMOVAL AND INSTALLATIONM1136005300017
Replace the hydraulic unit (integrated with ABS/TCL-ECU). (Refer to GROUP 35B, Hydraulic Unit P.35B-93).
REMOVAL STEPS
HOOD LOCK RELEASE HANDLE
(REFER TO GROUP 42, HOOD P.42-8.)
INSTRUMENT LOWER PANEL (REFER
TO GROUP 52A, INSTRUMENT PANEL
ASSEMBLY P.52A-4.)
INSTRUMENT PANEL GARNISH
(REFER TO GROUP 52A,
INSTRUMENT PANEL ASSEMBLY
P.52A-4.)
1. SWITCH BEZEL ASSEMBLY
2. SWITCH PANEL ASSEMBLY
3. TCL SWITCH REMOVAL STEPS (Continued)

ABS/TCL-ECU
TRACTION CONTROL SYSTEM (TCL)13C-50

GENERAL DESCRIPTION
FRONT AXLE26-2
GENERAL DESCRIPTIONM1261000100370
The front axle consists of front hubs, knuckles, wheel
bearings and drive shafts, and has the following fea-
tures:
The wheel bearing incorporates double-row
angular contact ball bearing for reduced friction.
The front wheel hub assembly combines the hub,
wheel bearing, and oil seal in a single unit for
fewer parts, better durability, improved assembly
precision, and better structural organization.
The driveshaft incorporates BJ-PTJ type constant
velocity joints with high transmission efficiency for
low vibration and noise.
Due to the use of the inner shaft and bracket
assembly, the right and left drive shafts are
approximately the same in length. This reduces
noise, vibration and torque steer.L-RH>
The dynamic damper is mounted on the LH drive-
shaft.
ABS rotor for detecting the wheel speed is
press-fitted to the BJ.
NOTE: .
TJ: Tripod Joint
PTJ: Pillow Tripod Joint
BJ: Birfield Joint
CONSTRUCTION DIAGRAM
FRONT AXLE DIAGNOSIS
TROUBLESHOOTING STRATEGYM1261005600240
Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will be sure that you
have exhausted most of the possible ways to find a front axle fault.
1. Gather information from the customer.

FRONT AXLE HUB ASSEMBLY
FRONT AXLE26-9
FRONT AXLE HUB ASSEMBLY
REMOVAL AND INSTALLATIONM1261001700386
For vehicles with ABS, do not strike the ABS rotors installed to the BJ outer race of drive shaft
against other parts when removing or installing the drive shaft. Otherwise the ABS rotors will be
damaged.
For vehicles with ABS, be careful not to strike the pole piece at the tip of the front wheel speed
sensor with tools during servicing work.
Required Special Tools:
MB990767: Front Hub and Flange Yoke Holder
MB990242: Puller Shaft
MB990244: Puller Bar
MB991354: Puller Body
MB990211: Slide Hammer
MB991897:Ball Joint Remover
Post-installation Operation
Check the dust cover for cracks or damage by pushing it with
your finger.
REMOVAL STEPS
1. SPLIT PIN
<> >>A<<2. DRIVE SHAFT NUT
>>A<<3. WASHER
4. FRONT WHEEL SPEED SENSOR
BRACKET
5. FRONT WHEEL SPEED SENSOR

6. BRAKE HOSE BRACKET
<> 7. CALIPER ASSEMBLY
<> 8. BRAKE DISC
9. DRIVE SHAFT
<>10.FRONT WHEEL HUB ASSEMBLY
11 .DUST COVER
<> 12. SELF LOCKING NUT (CONNECTION
FOR LOWER ARM BALL JOINT)
<> 13. SELF LOCKING NUT (CONNECTION
FOR TIE ROD END)
14.FRONT STRUT TO KNUCKLE
MOUNTING BOLT AND NUT
15.KNUCKLE
REMOVAL STEPS (Continued)