Mitsubishi Montero (2004+). Manual — part 1070
SPECIAL TOOLS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-123
SPECIAL TOOLS
M1352000600727
TOOL
TOOL NUMBER AND
NAME
SUPERSESSION
APPLICATION
MB991958
A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991914
F: MB991825
G: MB991826
MUT-III sub assembly
A: Vehicle
communication
interface (V.C.I.)
B: MUT-III USB cable
C: MUT-III main harness
A (Vehicles with CAN
communication
system)
D: MUT-III main harness
B (Vehicles without
CAN communication
system)
E: MUT-III main harness
C (for Daimler Chrysler
models only)
F: MUT-III measurement
adapter
G: MUT-III trigger
harness
MB991824-KIT
NOTE: G: MB991826
MUT-III trigger harness is
not necessary when
pushing V.C.I ENTER key
Checking diagnostic
trouble codes
CAUTION
MUT-III main harness B
(MB991911) should be
used. MUT-III main
harness A and C should
not be used for this
vehicle.
MB991348
Test harness set
MB991496-OD
For checking of G and
yawrate sensor
MB991910
MB991826
MB991958
MB991911
MB991914
MB991824
MB991827
MB991825
DO NOT USE
A
B
C
D
E
F
G
DO NOT USE
MB991348
ON-VEHICLE SERVICE
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-124
ON-VEHICLE SERVICE
ABS SENSOR OUTPUT VOLTAGE CHECK
M1352001600333
Required Special Tool:
• MB991219: Inspection Harness
NOTE: Two ECUs of the same type are situated up and down
in a row at the inner part of the floor console. The upper side
ECU is the M-ASTC-ECU. The lower side ECU is the transfer
ECU.
1. Lift up the vehicle and release the parking brake.
MB991223
Harness set
A:MB991219
Inspection harness
MB991223
MB991709-01
ABS sensor output
voltage measurement
TOOL
TOOL NUMBER AND
NAME
SUPERSESSION
APPLICATION
MB991223
A
AB
B
C
D
AC204258AB
M-ASTC-ECU
TRANSFER
-ECU
ON-VEHICLE SERVICE
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-125
2. Disconnect the M-ASTC-ECU connector, and then use
special tool MB991219 to measure the output voltage at the
harness side connector.
3. Manually turn the wheel to be measured 1/2 to 1
turn/second. Measure the output voltage with a voltmeter or
oscilloscope.
Output voltage:
• Minimal voltmeter reading: 42 mV
• Maximum voltmeter reading: 300 mV
• Minimal oscilloscope reading: 120 mV
• Maximum oscilloscope reading: 600 mV
Probable causes of low output voltage
• ABS sensor pole piece-to-ABS rotor clearance too large
• Faulty ABS sensor
NOTE: Check the connection of the sensor harness and con-
nector before using the oscilloscope.
4. To observe the waveform with an oscilloscope: Start the
engine, move the transfer selector lever to the "4H" position
and the transmission selector lever to "D" range, and then
spin the wheel.
NOTE: The output waveform is low when the wheel speed is
low. Similarly, it will be higher as the wheel speed increases.
Waveform may also be observed by driving the vehicle.
.
TERMINAL NO.
Front left
Front right
Rear left
Rear right
30
27
46
60
31
28
47
61
AC204264 AB
E-119
E-120
E-119 HARNESS CONNECTOR:
COMPNENT SIDE
E-120 HARNESS CONNECTOR:
COMPNENT SIDE
ACX01114 AB
WHEN TURNING BY HAND
WHEN IDLING [5 - 6 km/h (3 - 4 mph) ]
D RARGE (AUTOMATIC TRANSAXLE)
10.0 ms/DIV
1V/DIV
ON-VEHICLE SERVICE
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-126
POINTS IN WAVEFORM MEASUREMENT
NOTE: The ABS sensor cable moves in relation to motion of the front or rear suspension. Therefore, it is
likely that it has an open circuit only when driving on rough roads but it functions normally when driving on
smooth roads. It is recommended to observe sensor output voltage waveform also under special conditions,
such as driving on a rough road.
ABS VALVE RELAY CHECK
M1352010900127
HYDRAULIC BRAKE BOOSTER (HBB)
HYDRAULIC UNIT CHECK
M1352001700589
Required Special Tools:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
SYMPTOM
PROBABLE CAUSES
REMEDY
Too small or zero waveform amplitude
Faulty ABS sensor
Replace sensor
Waveform amplitude fluctuates
excessively (This is no problem if the
minimum amplitude is 100 mV or more)
Axle hub eccentric or with large runout
Replace hub
Noisy or disturbed waveform
Open circuit in ABS sensor
Replace sensor
Open circuit in harness
Repair harness
Incorrectly mounted ABS sensor
Mount correctly
ABS rotor with missing or damaged teeth Replace ABS rotor
BATTERY VOLTAGE
TESTER
CONNECTION
SPECIFIED
CONDITION
Not applied
2
− 4
Less than 2
ohms
2
− 5
Open circuit
• Connect terminal 1 to the
positive battery terminal
• Connect terminal 3 to the
negative battery terminal
2
− 4
Open circuit
2
− 5
Less than 2
ohms
AC204274
AB
VALVE RELAY
2
1
3
5
4
1
3
2
4
5
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