Mitsubishi Montero (2004+). Manual — part 1125
ON-VEHICLE SERVICE
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-211
ON-VEHICLE SERVICE
ABS SENSOR OUTPUT VOLTAGE CHECK
M1353004700020
Refer to GROUP 35B, On-Vehicle service
SOLENOID VALVE CHECK
M1353001700032
Measure the resistance between the following solenoid valve
terminals.
• Control solenoid valve IN (FR): Between terminals (19) −
(34)
• Control solenoid valve OUT (FR): Between terminals (20) −
(34)
• Control solenoid valve IN (FL): Between terminals (21) −
(34)
• Control solenoid valve OUT (FL): Between terminals (22) −
(34)
• Control solenoid valve IN (RR): Between terminals (15) −
(34)
• Control solenoid valve OUT (RR): Between terminals (16) −
(34)
• Control solenoid valve IN (RL): Between terminals (13) −
(34)
• Control solenoid valve OUT (RL): Between terminals (14) −
(34)
• Select solenoid valve (SA1): Between terminals (18) − (34)
• Select solenoid valve (SA2): Between terminals (17) − (34)
• Select solenoid valve (SA3): Between terminals (12) − (34)
• Select solenoid valve (STR): Between terminals (11) − (34)
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
ACX01116 AB
ON-VEHICLE SERVICE
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-212
Standard value:
Control solenoid valve IN: 4.75
− 5.25 Ω
Control solenoid valve OUT: 2.0
− 2.4 Ω
Select solenoid valve: 3.5
− 3.9 Ω
IN THE EVENT OF A DISCHARGED BATTERY
M1353004900024
WARNING
If the ABS is not operating, the vehicle posture will be
unstable during braking. Do not drive the vehicle with
the M-ASTC-ECU connector disconnected or with the
ABS not operating.
If the engine is started using a booster cable when the battery
is completely flat, and the vehicle is then driven without waiting
for the battery to be recharged, the engine may misfire and it
may not be possible to drive the vehicle. This is because the
ABS consumes a large amount of current when carrying out its
initial checks. If this happens, recharge the battery fully.
Initializing the M-ASTC-ECU (Action to be taken
when the battery is removed)
When the battery is removed, the neutral point of the steering
wheel sensor will be erased, the Active skid control system
OFF indicator light will illuminates and DTC 83 (ST NO ADJ)
will be set. In this case, make the steering wheel sensor learn
the neutral point by following one of the procedures below.
Using scan tool MB991958
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Turn the steering wheel 8
°or more, and then return it to the
neutral (straight forward) position.
4. Execute item No.14 "ST SNSR: 0 " on the Actuator test.
5. Ensure that the Active skid control system OFF indicator
light is off.
6. Turn the ignition switch to the "LOCK" (OFF) position.
7. Disconnect scan tool MB991958.
Not using scan tool MB991958
CAUTION
1. If a different diameter or size of tires are equipped, the
M-ASTC-ECU may not learn the neutral position.
Turn the steering wheel 8
°or more, and then return the
steering wheel to straight-ahead position.
2. Drive the vehicle straight forward at 35 km/h (25 mph) for
approximately one second.
3. Ensure that the Active skid control system OFF indicator
light is off.
AC307591 AB
MB991911
DATA LINK
CONNECTOR
MB991824
MB991827
M-ASTC CONTROL UNIT (M-ASTC-ECU)
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MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-213
M-ASTC CONTROL UNIT (M-ASTC-ECU)
REMOVAL AND INSTALLATION
M1353002500031
INSTALLATION SERVICE POINTS
.
>>A<< M-ASTC-ECU INITIALIZATION
CAUTION
Perform the following initialization procedure, otherwise
the following DTCs will be set.
• DTC No.81: G NO ADJ
• DTC No.84: TF NO CHECK
• DTC No.85: M/CYL PRS NO CHECK
NOTE: The SS4 indicator is flashing while the scan tool is con-
nected.
When installing a new M-ASTC-ECU, perform the initialization
as follows, ensuring that the vehicle remains level.
1. Place the selector lever in the "P" position.
Pre-removal and Post-installation Operation
• Indicator Panel, Lower Center Panel Removal and instal-
lation (Refer to GROUP 52A, Floor Console
AC204232
5.0 ± 1.0 N·m
44 ± 9 in-lb
1
3
AB
2
REMOVAL STEPS
>>B<<
• CANCELLING THE HBB BUZZER
OPERATION CHECK MODE (WHEN
REPLACING THE ABS-ECU)
1. M-ASTC-ECU CONNECTOR
2. GROUND
>>A<<
3. M-ASTC-ECU
REMOVAL STEPS (Continued)
ABS SENSOR
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MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-214
2. Connect scan tool MB991958 to the data link connector.
3. Turn the ignition switch to the "ON" position.
4. Execute item No.16 "G SNSR: " on the Actuator test.
5. Depress the brake pedal by a pressure of approximately 40
kg quickly once.
6. Place the shift lever to the N range.
CAUTION
If the transfer is not engaged properly when the transfer
lever is moved to each position, the initialization has not
been completed successfully.
7. Move the transfer lever through all positions (2H, 4H, 4HLc,
4LLc).
CAUTION
The initialization has not been completed while the ASC
OFF indicator is illuminating and the ASC indicator is
flashing.The system does not recognize the transfer posi-
tion correctly. Make the system recognize it again.
8. Ensure that the ASC OFF indicator and the ASC indicator
are off.
9. Turn the ignition switch to the "LOCK" (OFF) position.
10.Disconnect scan tool MB991958.
.
>>B<< CANCELLING THE HBB BUZZER OPERATION
CHECK MODE (WHEN REPLACING THE ASTC-ECU)
If the ignition switch is turned to the "ON" position after replac-
ing the M-ASTC-ECU, the HBB buzzer will sound for approxi-
mately five seconds. This is because the M-ASTC-ECU is at
the HBB buzzer operation check mode (for factory production
line). To stop the tone alarm, carry out one of the following pro-
cedures.
• Erase HBB diagnostic trouble codes by using scan tool
MB991958 or special tool MB991529. Refer to GROUP
35A, HBB Trouble Code Diagnosis
.
• Drive the vehicle at 40 km/h (25 mph) or more.
ABS SENSOR
REMOVAL AND INSTALLATION
M1354004300014
Refer to GROUP 35B, ABS sensor
AC307591 AB
MB991911
DATA LINK
CONNECTOR
MB991824
MB991827
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