Mitsubishi Montero (2004+). Manual — part 981
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-499
STEP 8. 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 : Replace the transfer-ECU.
DTC 42: Shift Actuator System (Short Circuit)
DTC 43: Shift Actuator System (Open Circuit)
.
SHIFT ACTUATOR SYSTEM CIRCUIT
Refer to
.
CIRCUIT OPERATION
Refer to
.
DTC SET CONDITIONS
When the shift actuator current is more than the tar-
get value +1 ampere during drive, the DTC 42 is set
as the short circuit of the shift actuator system. When
the main relay voltage is 6 volts or less or the actual
value of the shift actuator current is less than 0.1
ampere, the DTC 43 is set as the open 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
AC307591 AC
MB991911
MB991824
MB991827
AC307591
DATA LINK
CONNECTOR
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-500
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
STEP 1. Using scan tool MB991958, check data list item 10:
Shift Actuator Amperage.
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 10: Shift Actuator Amperage.
• When the operating transfer shift lever 2H → 4H, 4H
→ 4HLc or 4HLc → 4LLc, the display should be 0
ampere
→ 0.2 − 1.5 ampere → 0 ampere.
(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
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-501
STEP 2. Measure the power supply voltage at shift actuator
connector C-09.
(1) Disconnect connector C-09 and measure at the harness
side.
(2) Turn the ignition switch to the "ON" position.
(3) Transmission range should be "N" range.
(4) Measure the voltage between terminal 2 and ground.
• When the operating transfer shift lever 2H → 4H, 4H →
4HLc or 4HLc
→ 4LLc, the voltage should measure bat-
tery positive voltage.
(5) Measure the voltage between terminal 1 and ground.
• When the operating transfer shift lever 4LLc → 4HLc,
4HLc
→ 4H or 4H → 2H, the voltage should measure
battery positive voltage.
(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage?
YES : Replace the shift actuator. Refer to GROUP 23B,
Transfer
.
NO : Go to Step 3.
AC204395
CONNECTOR : C-09
AH
C-09 (GR)
2
1
AC204918
1
2
AC204918 AS
C-09 HARNESS CONNECTOR :
COMPONENT SIDE
AC204918
1
2
AC204918 AR
C-09 HARNESS CONNECTOR :
COMPONENT SIDE
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-502
STEP 3. Measure the actuator output voltage at
transfer-ECU connector E-109 by backprobing.
(1) Do not disconnect connector E-109.
(2) Turn the ignition switch to the "ON" position.
(3) Transmission range should be "N" range.
(4) Measure the voltage between terminal 1 and ground by
backprobing.
• When the operating transfer shift lever 2H → 4H, 4H →
4HLc or 4HLc
→ 4LLc, the voltage should measure 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 voltage should measure
1/2 battery voltage
→ 1.0 volt or less → 1/2 battery volt-
age.
(5) Measure the voltage between terminal 3 and ground by
backprobing.
• When the operating transfer shift lever 2H → 4H, 4H →
4HLc or 4HLc
→ 4LLc, the voltage should measure 1/2
battery voltage
→ 1.0 volt or less → 1/2 battery voltage.
• When the operating transfer shift lever 4LLc → 4HLc,
4HLc
→ 4H or 4H → 2H, the voltage should measure
1/2 battery voltage
→ battery positive voltage → 1.0 volt
or less
→ 1/2 battery voltage.
(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage within the specified range?
YES : Go to Step 6.
NO : Go to Step 4.
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
AC204918
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
BZ
E-109 HARNESS CONNECTOR :
HARNESS SIDE
AC204918
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
CB
E-109 HARNESS CONNECTOR :
HARNESS SIDE
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