Mitsubishi Montero (2002-2004). Manual — part 947
DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
23Ac-271
DIAGNOSIS
Required Special Tool:
• MB991502: Scan Tool (MUT-II)
STEP 1. Using scan tool MB991502, check data list item 01:
Accelerator Pedal Position Sensor.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991502 to data reading mode for 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 between 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 between 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.
STEP 2. Using scan tool MB991502, read the MFI
diagnostic trouble code.
(1) Connect scan tool MB991502 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, P2128 set?
YES : Refer to GROUP 13A, Diagnosis
− Diagnostic
Trouble Code Chart
.
NO : Go to Step 3.
ACX01539AD
MB991502
16-PIN
ACX01539AD
MB991502
16-PIN
DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>
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DIAGNOSTIC TROUBLE CODE PROCEDURES
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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.
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
DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>
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DIAGNOSTIC TROUBLE CODE PROCEDURES
23Ac-273
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
DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
23Ac-274
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 MB991502, check data list item 01:
Accelerator Pedal Position Sensor.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991502 to the data reading mode for 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 between 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 between 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
ACX01539AD
MB991502
16-PIN
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