Mitsubishi Montero Sport (2004+). Manual — part 745
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-49
STEP 1. Check the ground line at SRS-ECU connector
C-24.
(1) Disconnect SRS-ECU connector C-24 and measure at the
harness side (rear side).
(2) Measure the resistance between terminal 7 and ground.
• It should be less than 2 ohms.
Q: Does continuity exist ?
YES : Go to Step 3.
NO : Go to Step 2.
AC202743
20
19
18
17
7
15
8
16
6
5
4
12
13 14
3
2
1
9 10 11
CONNECTOR: C-24
C-24 (Y)
C-24 HARNESS CONNECTOR:
HARNESS SIDE
(REAR VIEW)
AD
SRS-ECU
AC003298
<MEASURING METHOD: SAMPLE>
MB991222
AC
C-24 HARNESS CONNECTOR:
HARNESS SIDE
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-50
STEP 2. Check the harness wires between SRS-ECU
connector C-24 (terminal No.7) and ground.
NOTE: After inspecting intermediate connectors D-13, inspect
the wiring harness.
If intermediate connector D-13 is damaged, repair or replace it.
Refer to GROUP 00E, Harness Connector Inspection
Go to Step 5.
Q: Are harness wires between the SRS-ECU connector
C-24 (terminal No.7) and the ground in good condition?
YES : Go to Step 5.
NO : Repair them. Then go to Step 5.
AC202743
20
19
18
17
7
15
8
16
6
5
4
12
13 14
3
2
1
9 10 11
CONNECTOR: C-24
C-24 (Y)
C-24 HARNESS CONNECTOR:
HARNESS SIDE
(REAR VIEW)
AD
SRS-ECU
AC003299AH
D-13
JUNCTION BLOCK
(REAR)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
D-13 HARNESS
CONNECTOR:
COMPONENT SIDE
CONNECTOR: D-13
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-51
STEP 3. Measure the ignition switch (IG
1
) line voltage at
SRS-ECU connector C-24.
(1) Disconnect SRS-ECU connector C-24 and measure at the
harness side (rear side).
(2) Turn the ignition switch to the "ON position."
(3) Measure the voltage between terminal 13 (for DTC 42) or
16(for DTC 41) and the ground.
• Voltage should measure 9 volts or more
Q: Is the voltage 9 volts or more?
YES : Replace the SRS-ECU. Refer to
to Step 5.
NO : Go to Step 4.
AC202743
20
19
18
17
7
15
8
16
6
5
4
12
13 14
3
2
1
9 10 11
CONNECTOR: C-24
C-24 (Y)
C-24 HARNESS CONNECTOR:
HARNESS SIDE
(REAR VIEW)
AD
SRS-ECU
AC003300
SRS-ECU HARNESS
CONNECTOR: C-24
MB991222
AC
C-24 HARNESS CONNECTOR:
HARNESS SIDE
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-52
STEP 4. Check the harness wires between the ignition
switch (IG
1
) and SRS-ECU connector C-24 (terminal No.13
and 16).
NOTE: After inspecting intermediate connector D-08, or D-13
(for DTC 42) or D-14 (for DTC 41) inspect the wiring harness. If
intermediate connector D-08, D-13 (for DTC 42) or D-14 (for
DTC 41) is damaged, repair or replace it. Refer to GROUP
00E, Harness Connector Inspection
Go to Step 5.
Q: Are the harness wires between the ignition switch (IG
1
)
and SRS-ECU connector C-24 good condition?
YES : Go to Step 5.
NO : Repair or replace the harness wire. Then go to Step 5.
AC202743
20
19
18
17
7
15
8
16
6
5
4
12
13 14
3
2
1
9 10 11
CONNECTOR: C-24
C-24 (Y)
C-24 HARNESS CONNECTOR:
HARNESS SIDE
(REAR VIEW)
AD
SRS-ECU
3
4
1
2
AC200759
6
7
16
14
5
12
13
4
11
9
2
10
3
8
1
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CONNECTORS: D-08, D-13, D-14
AB
D-08 HARNESS
CONNECTOR:
COMPONENT SIDE
D-13 HARNESS
CONNECTOR:
COMPONENT SIDE
D-14 HARNESS
CONNECTOR:
COMPONENT SIDE
D-08
D-13
D-14 (B)
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