Mitsubishi Montero (2004+). Manual — part 1193
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-107
STEP 2. Check the SRS warning light.
(1) Disconnect the negative battery cable.
(2) Disconnect the combination meter connector D-04.
(3) Connect the negative battery cable.
(4) Turn the ignition switch to the "ON" position.
Q: Does the SRS warning light go out when combination
meter connector D-04 is disconnected?
YES : Go to Step 3.
NO : Replace the combination meter. Then go to Step 4.
AC204231AH
CONNECTOR : D-04
D-04 (GR)
47
38
42
39
44 45 46
43
35
37
36
34
33
40 41
32
31
D-04 HARNESS SIDE
CONNECTOR (REAR VIEW)
ACX01667
AT
TEMP
SRS
P
R
N
D
5
4
3
2
1
x1000r/min
2
3
4
5
6
7
8
1
AB
SRS WARNING LIGHT
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-108
STEP 3. Check the harness for short circuit to ground
between SRS-ECU connector E-08 (terminal No.8) and
combination meter connector D-04 (terminal No.44).
Q: Is the harness wire between the SRS-ECU connector
E-08 (terminal No.8) and combination meter connector
D-04 (terminal No.44) in good condition?
YES : Erase the diagnostic trouble code memory, and check
the diagnostic trouble code. If DTC 43 sets, replace
the SRS-ECU (Refer to
). Then go to Step
NO : Repair the harness wire between SRS-ECU
connector E-08 and combination meter connector
D-04. Then go to Step 4.
STEP 4. Recheck for diagnostic trouble code.
Q: Is DTC 43 set?
YES : Return to Step 1.
NO : The procedure is complete. (If no malfunctions are not
found in all steps, an intermittent malfunction is
suspected. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunction
).
ACX01478AM
CONNECTOR: E-08
E-08 (Y)
HARNESS SIDE
CONNECTOR
(REAR VIEW)
AC204231AH
CONNECTOR : D-04
D-04 (GR)
47
38
42
39
44 45 46
43
35
37
36
34
33
40 41
32
31
D-04 HARNESS SIDE
CONNECTOR (REAR VIEW)
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-109
DTC 44: SRS Warning Light Drive Circuit System Fault 2
.
CIRCUIT OPERATION
• Power for the SRS warning light is supplied from
the ignition switch (IG1) circuit.
• The SRS warning light illuminates when the igni-
tion switch is turned to the "ON" position and
goes out after approximately seven seconds if
there is not a malfunction in the SRS system.
.
AC204592
SRS Warning Light Drive Circuit
AB
ACX01478 AG
CONNECTOR: E-08
E-08 (Y)
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-110
DTC SET CONDITIONS
This DTC is set under one of the following cases
while the SRS-ECU is monitoring the warning light
drive circuit:
• When a short circuit occurs in the warning light
drive circuit.
• When a malfunction is detected in the output
transistor inside the SRS-ECU.
However, if the vehicle condition returns to normal,
DTC 44 will be automatically erased, and the SRS
warning light will go out.
.
TROUBLESHOOTING HINTS
• Damaged wiring harnesses or connectors
• Malfunction of the SRS-ECU
.
DIAGNOSIS
Required Special Tool:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B (Vehicles without
CAN communication system)
STEP 1. Check the SRS warning light drive circuit system
(Refer to
).
Q: Is the SRS warning light drive circuit normal?
YES : Erase the diagnostic trouble code memory, and check
the diagnostic trouble code. If DTC 43 sets, replace
the SRS-ECU (Refer to
). Then go to Step
NO : Replace the combination meter (Refer to GROUP
54A, Combination Meter Assembly
). Then
go to Step 2.
STEP 2. Recheck for diagnostic trouble code.
Q: Is DTC 44 set?
YES : Return to Step 1.
NO : The procedure is complete. (If no malfunctions are not
found in all steps, an intermittent malfunction is
suspected. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunction
).
DTC 46 IMPROPER INSTALLATION OF SRS-ECU
.
TROUBLE JUDGMENT
This DTC is set when an SRS-ECU, designed only
for the driver's air bag, is installed on the vehicle,
which has both driver's and passenger's air bags.
.
TROUBLESHOOTING HINTS
• Malfunction of the SRS-ECU
.
DIAGNOSIS
Replace the SRS-ECU (Refer to
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