Mitsubishi Montero (2002-2004). Manual — part 945
DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>
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DIAGNOSTIC TROUBLE CODE PROCEDURES
23Ac-263
.
CIRCUIT OPERATION
When turning the ignition switch to "ON," the trans-
fer-ECU (terminal number 13) receives battery volt-
age from the ignition switch.
.
DTC SET CONDITIONS
When power supply voltage drops to 9.5 volts and
less, the DTC 11 is set as low voltage. When power
supply voltage rises to 18 volts and over, the DTC 12
is set as high voltage.
.
AC204191
CONNECTORS : D-208, D-210
D-208
D-208
D-210
D-210
AP
5 6
2
4
3
1
5
4
12 13
3
2
9
7 8
10
6
1
11
AC204194
CONNECTORS : E-11, E-109
E-109
E-109
E-11
E-11
AW
3
10
16
9
7 8
6
1
4
2
5
11
14
1213
15
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>
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DIAGNOSTIC TROUBLE CODE PROCEDURES
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TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
• Malfunction of the ignition switch
• Damaged harness, connector
• Malfunction of the transfer-ECU
DIAGNOSIS
Required Special Tool:
• MB991502: Scan Tool (MUT-II)
STEP 1. Using scan tool MB991502, check data list item 09:
Ignition switch power supply.
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 09,
Ignition Switch Power Supply.
• The voltage should equal battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage equal battery positive voltage?
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. Measure the power supply 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 13 and ground by
backprobing.
• The voltage should measure battery positive voltage.
(4) Turn the ignition switch to "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage?
YES : Go to Step 5.
NO : Go to Step 3.
ACX01539AD
MB991502
16-PIN
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
CA
E-109 HARNESS CONNECTOR :
HARNESS SIDE
DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>
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DIAGNOSTIC TROUBLE CODE PROCEDURES
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STEP 3. Check joint connector D-01, junction block
connector D-208, D-210, intermediate connector E-11 and
transfer-ECU connector E-109 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
AC204170
CONNECTOR : D-01
CD
9 10
8
6 7
31 32
30
29
18 19 20 21
5
4
2
1
3
27
26
24
23
25
12 13 14 15 16 17
28
11
22
33
AC204191
CONNECTORS : D-208, D-210
D-208
D-208
D-210
D-210
AP
5 6
2
4
3
1
5
4
12 13
3
2
9
7 8
10
6
1
11
DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>
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DIAGNOSTIC TROUBLE CODE PROCEDURES
23Ac-266
Q: Are the connectors and terminals in good condition?
YES : Go to Step 4.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
STEP 4. Check the harness for open circuit or short circuit
to ground between junction block connector D-210
terminal 12 and transfer-ECU connector E-109 terminal 13.
Q: Is the harness wire in good condition?
YES : Go to Step 6.
NO : Repair or replace the harness wire.
AC204194
CONNECTORS : E-11, E-109
E-109
E-109
E-11
E-11
AW
3
10
16
9
7 8
6
1
4
2
5
11
14
1213
15
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
AC204173
CONNECTOR : D-210
D-210
BO
5
4
12 13
3
2
9
7 8
10
6
1
11
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
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