Mitsubishi Montero (2002-2004). Manual — part 799
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-65
STEP 7. Check the harness wires between SRS-ECU
connector E-08 (terminal No.13) and junction block
connector D-209 (terminal No.10).
Q: Are harness wires between SRS-ECU connector E-08
(terminal No.13) and junction block connector D-209
(terminal No.10) in good condition?
YES : Go to Step 8.
NO : Repair the harness wires between SRS-ECU
connector E-08 and junction block connector D-209.
Then go to Step 8.
STEP 8. Recheck for diagnostic trouble code.
Q: Is DTC 42 set?
YES : Replace the SRS-ECU. Refer to
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
ACX01478AH
CONNECTOR: E-08
E-08 (Y)
HARNESS
CONNECTOR:
HARNESS SIDE
AC204257
CONNECTOR : D-209
AF
D-209
D-209 HARNESS CONNECTOR:
COMPONENT SIDE
JUNCTION BLOCK
(FRONT VIEW)
5 4 3
2
12
13
10
11
7
8
1
6
9
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-66
DTC 43: SRS Warning Light Drive Circuit System Fault 1 (Light does not Illuminate.)
AC204592
SRS Warning Light Drive Circuit
AB
AC204230
CONNECTORS : D-03, D-04
AC
D-03 (GR)
D-04 (GR)
ACX01632
CONNECTORS: D-208, D-210
D-208
D-210
JUNCTION BLOCK
(FRONT VIEW)
AG
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-67
.
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.
.
DTC SET CONDITIONS
This DTC is set when an open circuit is detected for
a continuous period of five seconds while the SRS-
ECU is monitoring the SRS warning light and the
light is OFF. (transistor OFF.) However, if the vehicle
condition returns to normal, DTC 43 will be automati-
cally erased, and the SRS warning light will go out.
.
TROUBLESHOOTING HINTS
• Damaged wiring harnesses or connectors
• Blown bulb
• Malfunction of the SRS-ECU
• Malfunction of the combination meter
.
DIAGNOSIS
Required Special Tool:
• MB991502: Scan Tool (MUT-ll)
STEP 1. Check the SRS warning light.
(1) Disconnect the negative battery terminal.
(2) Connect the negative battery terminal.
(3) Disconnected the SRS-ECU connector E-08.
(4) Turn the ignition switch to the "ON" position.
Q: Does the warning light illuminate?
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 : Go to Step 2.
ACX01478 AG
CONNECTOR: E-08
E-08 (Y)
ACX01478 AG
CONNECTOR: E-08
E-08 (Y)
SRS AIR BAG DIAGNOSIS
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-68
STEP 2. Check the ground line at the SRS-ECU connector
E-08.
(1) Disconnect the negative battery terminal.
(2) Disconnect SRS-ECU connector E-08.
(3) Connect the negative battery terminal.
CAUTION
Do not insert a test probe into the terminal from its front
side directly as the connector contact pressure may be
weakened.
(4) Measure the continuity between terminal 7 and ground.
It should be less than 2 ohms.
Q: Does continuity exist?
YES : Go to Step 3.
NO : Then go to Step 5.
STEP 3. Check the SRS warning light bulb.
Q: Has the SRS warning light bulb blown?
YES : Replace the SRS warning light bulb. Then go to Step
NO : Go to Step 4.
ACX01478 AG
CONNECTOR: E-08
E-08 (Y)
AC201527
9 10 11 12
13 1415 16
1 2
3 4
5 6 7 8
17 18 19 20
E-08 HARNESS CONNECTOR:
HARNESS SIDE
AD
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
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