Mitsubishi Montero (2004+). Manual - part 956
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-399
HOW TO PERFORM ACTUATOR TEST
Required Special Tools:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System select."
5. Choose "SS4II" from the "POWER TRAIN" tab.
6. Select "MITSUBISHI."
7. Select "Actuator Test."
8. Choose an appropriate item and select the "OK" button.
FAIL-SAFE/BACKUP FUNCTIONS
M1231111000058
When malfunctions of the main sensors or actuators
are detected by the transfer-ECU, the transfer is con-
trolled by pre-set control logic to maintain safe condi-
tions for driving.
The following table shows how the fail-safe/backup
function affects vehicle driveability and operation.
AC307591 AC
MB991911
MB991824
MB991827
AC307591
DATA LINK
CONNECTOR
MALFUNCTIONING ITEM
JUDGMENT CONDITION
CONTROL CONTENTS DURING
MALFUNCTION
Power supply voltage
Power supply voltage is 9.5 V and less. Control start prohibited
Power supply voltage is 18 V and over. Control stop
Main relay (inside of ECU)
Voltage at relay OFF is 6 V and over, or
voltage at relay ON is 6 V and less.
Control stop
Accelerator pedal position
(APP) sensor
APP sensor voltage at idle condition is
less than 0.2 V.
Vehicle speed limitation
Front propeller shaft speed
sensor 1
Input signal from front propeller shaft
speed sensor is unstable during low
and medium speed driving. (When
malfunction is detected during 2WD
→
4WD shifting)
Control start prohibited