Mitsubishi Montero (2004+). Manual — part 959
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
TSB Revision
AUTOMATIC TRANSMISSION
23A-411
DTC SET CONDITIONS
If accelerator pedal position sensor output voltage is
0.2 volt or lower at times other than when the engine
is idling, the output is judged to be too low and DTC
21 is set.
.
TROUBLESHOOTING HINTS (THE MOST LIKELY
CAUSES FOR THIS CODE TO BE SET ARE:)
• Malfunction of the accelerator pedal position sen-
sor circuit
• 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
STEP 1. Using scan tool MB991958, check data list item 01:
Accelerator Pedal Position 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) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to data reading mode.
• Item 01: Accelerator Pedal Position Sensor − Active trac
4WD II.
• With the throttle valve in idle position, voltage should
measure between 905 and 1,165 mV.
• With the throttle valve in full-open position, voltage
should measure 4,035 mV or more.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 905 and 1,165 mV at
idle, and 4,035 mV or more in the full-open position?
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-412
STEP 2. Using scan tool MB991958, read the MFI
diagnostic trouble code.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check for MFI diagnostic trouble code.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Are MFI DTCs P2126, P2127 or P2128 set?
YES : Refer to GROUP 13A, Diagnosis
− Diagnostic
Trouble Code Chart
NO : Go to Step 3.
STEP 3. Measure the accelerator pedal position sensor
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) Measure the voltage between terminal 5 and ground by
backprobing.
• With the throttle valve in idle position, voltage should
measure between 0.905 and 1.165 volts.
• With the throttle valve in full-open position, voltage
should measure between 4.035 volts or more.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 0.535 and 0.735volt at
idle, and between 4.5 and 5.5 volts in the full-open
position?
YES : Go to Step 6.
NO : Go to Step 4.
AC307591 AC
MB991911
MB991824
MB991827
AC307591
DATA LINK
CONNECTOR
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
CC
E-109 HARNESS CONNECTOR :
HARNESS SIDE
TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>
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AUTOMATIC TRANSMISSION
23A-413
STEP 4. Check transfer-ECU connector E-109 and
intermediate connector E-114 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 5.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
STEP 5. Check harness for open circuit or damage
between accelerator pedal position sensor connector
D-138 terminal 6 and transfer-ECU connector E-109
terminal 5.
Q: Is the harness wire in good condition?
YES : Go to Step 7.
NO : Repair or replace the harness wire.
AC204194
CONNECTORS : E-109, E-114
BH
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
E-109
E-114
E-109
E-114
38
28
16
33
22
10
31
19
7
1
18
30
29
17
5
6
21
20
32
8
2
9
25
13
3
24
23
3435
1112
27
26
3637
14
4
15
AC203914
AD
STEERING
SHAFT
CONNECTOR : D-138
D-138 (GR)
1
3
2
4
6
5
7 8
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-414
STEP 6. 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 : Go to Step 7.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
STEP 7. Using scan tool MB991958, check data list item 01:
Accelerator Pedal Position 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) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to the data reading mode.
• Item 01: Accelerator Pedal Position Sensor − Active trac
4WD II.
• With the throttle valve in idle position, voltage should
measure between 905 and 1,165 mV.
• With the throttle valve in full-open position, voltage
should measure 4,035 mV or more.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 905 and 1,165 mV at
idle, and 4,035 mV or more in the full-open position?
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.
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
AC307591 AC
MB991911
MB991824
MB991827
AC307591
DATA LINK
CONNECTOR
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