Mitsubishi Montero (2004+). Manual — part 965
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-435
STEP 12. Measure the resistance at the transfer-ECU
connector E-109 by backprobing.
(1) Do not disconnect connector E-109.
(2) Measure the resistance between terminal 18 and ground by
backprobing.
• The resistance should measure less than 2 ohms.
Q: Is the measured resistance less than 2 ohms?
YES : Go to Step 13.
NO : Go to Step 15.
STEP 13. Check rear propeller shaft speed sensor
connector C-07 and transfer-ECU connector E-109 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
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 CF
E-109 HARNESS CONNECTOR :
HARNESS SIDE
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
AC204751
CONNECTOR : C-07
AB
1 2 3
C-07 (GR)
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-436
STEP 14. Check harness for open circuit or damage
between rear propeller shaft speed sensor harness side
connector C-07 terminal 1 and transfer-ECU connector
E-109 terminal 18.
Q: Is the harness wire in good condition?
YES : Go to Step 16.
NO : Repair or replace the harness wire.
STEP 15. Check transfer-ECU connector E-109 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Are the connector and terminals in good condition?
YES : Replace the PCM.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
AC204751
CONNECTOR : C-07
AB
1 2 3
C-07 (GR)
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
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-437
STEP 16. Using an oscilloscope, check the rear propeller
shaft speed sensor waveform at transfer-ECU connector
E-109 by backprobing.
(1) Do not disconnect connector E-109.
(2) Connect an oscilloscope probe to transfer-ECU connector
E-109 terminal 9 and 18 by backprobing.
(3) Start the engine and drive the vehicle at constant speed of
30 km/h (19 mph).
(4) Check the rear propeller shaft speed sensor waveform.
• The rear propeller shaft speed sensor waveform should
show a pattern similar to the illustration. The maximum
value should be 4.8 volts and more and the minimum
value 0.8 volt and less. The output waveform should not
contain electrical noise.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the waveform normal?
YES : Go to Step 19.
NO : Go to Step 17.
STEP 17. Replace the rear propeller shaft speed sensor.
(1) Replace the rear propeller shaft speed sensor. Refer to
GROUP 23B, Transfer
(2) Test drive the vehicle.
(3) Check for transfer diagnostic trouble code.
Q: Is transfer DTC 24 or 25 set?
YES : Go to Step 18.
NO : The procedure is complete.
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
AC204946 AC
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
OSCILLO-
SCOPE
PROBE
E-109 HARNESS CONNECTOR :
HARNESS SIDE
AC100335
NORMAL WAVEFORM
(V)
5
0
AB
ACX01228 AE
REAR PROPELLER
SHAFT SPEED SENSOR
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-438
STEP 18. Replace the sensor rotor.
(1) Replace the sensor rotor. Refer to GROUP 23B, Transfer
.
(2) Test drive the vehicle.
(3) Check for transfer diagnostic trouble code.
Q: Is transfer DTC 24 or 25 set?
YES : The transfer DTC may have set due to external radio
frequency interference (RFI), possibly caused by
cellular phone activity, or aftermarket components
installed on the vehicle.
NO : The procedure is complete.
STEP 19. Using scan tool MB991958, check data list item
03: Rear Propeller Shaft Speed Sensor.
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) Start the engine.
(3) Set scan tool MB991958 to data reading mode.
• Item 03: Rear Propeller Shaft Speed Sensor.
• When driving at constant speed of 30 km/h (19
mph), the display should be "30 km/h (19 mph)."
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor 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.
ACX02196AB
AC307591 AC
MB991911
MB991824
MB991827
AC307591
DATA LINK
CONNECTOR
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