Mitsubishi Montero Sport (2004+). Manual — part 790
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>
35B-41
STEP 3. Check the harness wire between ABS-ECU
connector A-85 (terminal No.23 and 24) and data link
connector C-69 (terminal No.1 and 7).
NOTE: After inspecting intermediate connectors C-10 and
C-17, inspect the wires. If intermediate connector C-10 or C-17
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 4.
Q: Is any harness wire between ABS-ECU connector A-85
(terminal No.23 and 24) and data link connector C-69
(terminal No.1 and 7) damaged?
YES : Repair them and go to Step 5.
NO : Go to Step 4.
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
AC201948
CONNECTOR : C-69
C-69(B)
AD
8
16
7
15
6
14
5
13
4
12
3
11
2
10
1
9
C-69 HARNESS
CONNECTOR:
FRONT VIEW
AC201960
CONNECTORS : C-10, C-17
C-17
C-10
C-17
AB
C-10
17
7
15
5
16
6
12 13
10
3
11
14
4
8
1
9
2
8
19
7
6
5
16
15
17 18
4
3
2
10 11 12 13
1
9
14
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>
35B-42
STEP 4. Check the harness wires between ABS-ECU
connector A-86 (terminal No.32 and 34) and ground.
Q: Are any harness wires between ABS-ECU connector
A-86 (terminal No.32 and 34) and ground damaged?
YES : Repair them and then go to Step 5.
NO : Replace the hydraulic unit (integrated with ABS-ECU)
and go to Step 5.
STEP 5. Retest the system.
Q: Does the scan tool communicate with the ABS system?
YES : The procedure is complete.
NO : Return to Step 1.
AC201944
CONNECTOR : A-86
A-86(GR)
A-86 HARNESS
CONNECTOR:
COMPONENT SIDE
AE
32
34
31
33
AK303629AB
MB991911
MB991827
MB991824
16-PIN
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>
35B-43
INSPECTION PROCEDURE 2: When the Ignition Switch is Turned to the "ON" Position (Engine
Stopped or After Start-up), the ABS Warning Light does not Illuminate.
JUNCTION
BLOCK
ABS-ECU
ABS
RELAY
COMBINATION
METER
JOINT
CONNECTOR (1)
JOINT
CONNECTOR (5)
IGNITION
SWITCH (IG2)
IGNITION
SWITCH (IG1)
ABS Warning Light Circuit
AC004837 AL
CONNECTORS: A-35, A-85
A-85 (B)
A-35 (B)
AC004711
CONNECTORS: C-04, C-05
AC
C-05
C-04
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>
35B-44
.
CIRCUIT OPERATION
• The ABS warning light power is supplied from the
ignition switch. The ABS-ECU grounds the circuit
to illuminate the light by operating the ABS relay.
• The ABS-ECU controls the continuity to the ABS
warning light by turning the power transistor in
the unit "ON" and "OFF" to turn the ABS relay
"OFF" and "ON".
.
TECHNICAL DESCRIPTION (COMMENT)
The cause may be: an open circuit in the ABS warn-
ing light circuit, a blown light bulb, or a short circuit to
ground between the ABS relay and the ABS-ECU.
.
TROUBLESHOOTING HINTS (The most likely
causes for this case:)
• Blown fuse
• Damaged wiring harness or connector
• Burnt out ABS warning light bulb
• Malfunction of the ABS relay
• Malfunction of the hydraulic unit (integrated with
ABS-ECU)
AC004261
CONNECTORS: C-11, C-14, C-17
AR
C-17
C-14
C-11
AC004490
CONNECTOR: D-06
AE
JUNCTION BLOCK
(FRONT)
D-06
AC003457
D-13
D-08
CONNECTORS: D-08, D-13
AC
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