Mitsubishi Montero Sport (2004+). Manual — part 802
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>
35C-15
STEP 3. Check the harness wires between ABS-ECU
connector A-85 (terminal No.20 and 21) and wheel speed
sensor <front: LH> connector A-18 (terminal No.1 and 2).
Q: Are any harness wires between ABS-ECU connector
A-85 (terminal No.20 and 21) and wheel speed sensor
<front: LH> connector A-18 (terminal No.1 and 2)
damaged?
YES : Repair them and go to Step 9.
NO : Go to Step 7.
STEP 4. Check the harness wires between ABS-ECU
connector A-85 (terminal No.18 and 19) and wheel speed
sensor <front: RH> connector A-31 (terminal No.1 and 2).
Q: Are any harness wires between ABS-ECU connector
A-85 (terminal No.18 and 19) and wheel speed sensor
<front: RH> connector A-31 (terminal No.1 and 2)
damaged?
YES : Repair them and then go to Step 9.
NO : Go to Step 7.
AC201945
CONNECTOR : A-18
A-18(B)
AB
1
2
A-18 HARNESS
CONNECTOR:
COMPONENT SIDE
2 1
AC201944
CONNECTOR : A-85
A-85(B)
A-85 HARNESS
CONNECTOR:
COMPONENT SIDE
AD
18
12 11
20 19
10
3 2 1
13
14
22
23
17 16
25 24
15
8 7 6 5 4
21
9
26
AC201944
CONNECTOR : A-31
A-31(B)
A-31 HARNESS
CONNECTOR:
COMPONENT SIDE
AB
1
2
2 1
AC201944
CONNECTOR : A-85
A-85(B)
A-85 HARNESS
CONNECTOR:
COMPONENT SIDE
AD
18
12 11
20 19
10
3 2 1
13
14
22
23
17 16
25 24
15
8 7 6 5 4
21
9
26
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>
35C-16
STEP 5. Check the harness wires between ABS-ECU
connector A-85 (terminal No.1, 2, 3 and 4) and wheel speed
sensor connector E-29 <rear: LH> (terminal No 1 and 2) or
E-39 <rear RH> (terminal No 1 and 2).
AC201944
CONNECTOR : A-85
A-85(B)
A-85 HARNESS
CONNECTOR:
COMPONENT SIDE
AD
18
12 11
20 19
10
3 2 1
13
14
22
23
17 16
25 24
15
8 7 6 5 4
21
9
26
AC201954
CONNECTOR : E-29
E-29(B)
E-29 HARNESS
CONNECTOR:
COMPONENT SIDE
AB
1
2
AC201953
CONNECTOR : E-39
E-39(B)
E-39 HARNESS
CONNECTOR:
COMPONENT SIDE
AB
1
2
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>
35C-17
NOTE: After inspecting intermediate connectors C-17 and
E-45, inspect the wires. If intermediate connector C-17 or E-45
is damaged, repair or replace it. Refer to GROUP 00E, Har-
ness Connector Inspection
. If the connector has been
repaired or replaced, go to Step 9.
Q: Are any harness wires between ABS-ECU connector
A-85 (terminal No.1, 2, 3 and 4) and wheel speed sensor
connector E-29 <rear: LH> (terminal No 1 and 2) or E-39
<rear RH> (terminal No 1 and 2) damaged?
YES : Repair them and then go to Step 9.
NO : Go to Step 7.
STEP 6. Measure the wheel speed sensor output voltage.
Refer to
.
Output Voltage:
• When measured with a voltmeter: 70 mV or more
• When measured with oscilloscope (maximum voltage): 200
mV or more
Q: Is the measured voltage within the specified range?
YES : Replace the hydraulic unit (integrated with ABS-ECU)
and then go to Step 9.
NO : Go to Step 7.
STEP 7. Check the wheel speed sensor or ABS rotor.
Refer to
. If there is damage in any of the check items
below, replace the wheel speed sensor.
Check items:
• Wheel speed sensor internal resistance
Standard value: 1.3
− 1.5 kΩ
• Wheel speed sensor insulation resistance
Standard value: 100 k
Ω
• Toothed ABS rotor check
Q: Is the wheel speed sensor or ABS rotor damaged?
YES : Replace it and then go to Step 9.
NO : Go to Step 8.
AC201950
CONNECTOR : C-17
C-17
AB
17
7
15
5
16
6
12 13
10
3
11
14
4
8
1
9
2
AC201953
CONNECTOR : E-45
E-45(B)
E-45(B)
AC
1
10
2
11
3
12
4
1314 15
5
16
6
17
7
18
8
19
9
20
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>
35C-18
STEP 8. Check the wheel bearing.
Refer to GROUP 26, Front Hub Assembly
, and
GROUP 27, Axle Shaft
Q: Is the wheel bearing damaged?
YES : Replace it and then go to Step 9.
NO : Go to Step 9.
STEP 9. Recheck for diagnostic trouble code.
Q: Do diagnostic trouble codes 11, 12, 13, 14, 21, 22, 23 and
24 reset?
YES : Go to Step 1.
NO : The procedure is complete.
DTC 15: Wheel Speed Sensor (Abnormal Output Signal)
.
WHEEL SPEED SENSOR CIRCUIT
Refer to
.
CIRCUIT OPERATION
Refer to
.
ABS DTC SET CONDITIONS
• DTC 15 is set when output signal produced by
any of wheel-speed sensor is abnormal (exclud-
ing short and open-circuits).
.
TROUBLESHOOTING HINTS (The most likely
causes for these DTC to set are:)
• Improper installation of the wheel speed sensor
• Malfunction of the wheel speed sensor
• Damaged wiring harness or connector
• Malfunction of the ABS rotor
• Malfunction of the wheel bearing
• Malfunction of the hydraulic unit (integrated with
ABS-ECU)
.
AK303629AB
MB991911
MB991827
MB991824
16-PIN
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