Mitsubishi Montero (2002-2004). Manual - part 878
TRANSFER DIAGNOSIS <ACTIVE TRAC 4WD II>
TSB Revision
AUTOMATIC TRANSMISSION DIAGNOSIS
23Ab-53
ACTUATOR TEST REFERENCE TABLE
M1231111400034
TRANSFER-ECU TERMINAL VOLTAGE
REFERENCE CHART FOR
M1231111500053
NOTE: Two ECUs of the same shape 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.
MUT-II SCAN
TOOL
DISPLAY
ITEM
NO.
INSPECTION
ITEM
TEST CONTENT INSPECTION
REQUIREMENT
NORMAL CONDITION
F/W
SOLENOID
01
Freewheel
solenoid valve
Drives freewheel
solenoid valve
Ignition switch:
ON
Transmission
range: P
Engine: 0 r/min
Vehicle speed: 0
km/h (Vehicle
stop)
Freewheel engage
solenoid valve is switched
from ON to OFF, or from
OFF to ON.
SHIFT
NORMAL
02
Shift actuator
Turns shift
actuator motor to
normal direction
When the position is 2H,
4H and 4HLc, the shift
returns from that position
to original position after
shifting in the order of
2H
→4H→4HLc→4LLc.
When the position is 4LLc,
no shifting is performed.
SHIFT
REVERSE
03
Turns shift
actuator motor to
reverse direction
When the position is 2H,
4HLc and 4LLc, the shift
returns from that position
to original position after
shifting in the order of
4LLc
→4HLc→4H→2H.
When the position is 2H,
no shifting is performed.
AC205185
M-ASTC-ECU
TRANSFER-
ECU
TRANSFER-ECU SIDE CONNECTOR
AB
E-104
E-109