Mitsubishi Montero (2004+). Manual — part 979
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-491
STEP 13. Check intermediate connector B-27 and
free-wheel engage switch connector B-39 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Are the connectors and terminals in good condition?
YES : Go to Step 14.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
STEP 14. Check harness for open circuit between
free-wheel engage switch connector B-39 terminal 1 and
ground.
Q: Is the harness wire in good condition?
YES : Go to Step 15.
NO : Repair or replace the harness wire.
AC204169
CONNECTOR : B-27
AD
B-27 (B)
8
4
7
3
5
1
6
2
AC204168
CONNECTOR : B-39
AC
B-39 (GR)
2
1
AC204168
CONNECTOR : B-39
AC
B-39 (GR)
2
1
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-492
STEP 15. Using scan tool MB991958, check data list item
38: Free-wheel Engage Switch.
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) Transmission range should be "N" range.
(4) See scan tool MB991958 to data reading mode.
• Item 38: Free-wheel Engage Switch.
• When the transfer shift lever position is other than
2H, the display should be "ON."
• When the transfer shift lever position is 2H, the dis-
play should be "OFF."
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the switch operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunction
.
NO : Replace the transfer-ECU.
DTC 41: Shift Actuator System (Short/Open Circuit)
AC307591 AC
MB991911
MB991824
MB991827
AC307591
DATA LINK
CONNECTOR
AC100559
Shift Actuator System Circuit
AB
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-493
.
CIRCUIT OPERATION
When voltage is applied to the shift actuator terminal
2 from the transfer-ECU, the motor turns to the nor-
mal direction and the drive mode is shifted in the
order of 2H
→ 4H → 4HLc → 4LLc. When voltage is
applied to the shift actuator terminal 1, the motor
turns to the reverse direction and the drive mode is
shifted in the order of 4LLc
→ 4HLc → 4H → 2H.
.
DTC SET CONDITIONS
In the case that the transfer-ECU terminal voltage is
more than the main relay voltage (90% of specified
voltage) or lower than the main relay voltage (10% of
specified voltage) when the shift is not operated,
DTC 41 is set as the open circuit or the short circuit
of the shift actuator system.
.
TROUBLESHOOTING HINTS (THE MOST LIKELY
CAUSES FOR THIS CODE TO BE SET ARE:)
• Malfunction of the shift actuator
• Damaged harness, connector
• Malfunction of the transfer-ECU
DIAGNOSIS
Required Special Tool:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
AC204395
CONNECTOR : C-09
AH
C-09 (GR)
2
1
AC204176
CONNECTOR : E-109
BB
11 12
25
24
13
26
9
22
7
6
20
19
8
21
10
23
5
4
17
2
1
15
14
3
16
18
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-494
STEP 1. Using scan tool MB991958, check data list item 12:
Shift Actuator Voltage.
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) Transmission range should be "N" range.
(4) Set scan tool MB991958 to data reading mode.
• Item 12: Shift Actuator Voltage.
• When the operating transfer shift lever 2H → 4H, 4H
→ 4HLc or 4HLc → 4LLc, the display should be 1/2
battery voltage
→ battery positive voltage → 1.0 volt
or less
→ 1/2 battery voltage.
• When the operating transfer shift lever 4LLc →
4HLc, 4HLc
→ 4H or 4H → 2H, the display should
be 1/2 battery voltage
→ 1.0 volt or less → 1/2 bat-
tery voltage.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the actuator operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunction
.
NO : Go to Step 2.
AC307591 AC
MB991911
MB991824
MB991827
AC307591
DATA LINK
CONNECTOR
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