Mitsubishi Outlander (2003+). Manual — part 379
TROUBLESHOOTING
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-115
side connector terminals 27, 28 and body earth.
OK: 0 V
Q: Is the check result normal?
YES :
Erase the diagnosis code memory, and
check the diagnosis code. If diagnosis code
68 sets, replace the SRS-ECU (Refer to
NO :
Go to Step 3.
STEP 3. Connector check: SRS-ECU connector
C-114 and passenger's seat belt pre-tensioner
connector D-43
Q: Is the check result normal?
YES :
Check the harness wires for short circuit to
power supply between SRS-ECU connector
C-114 (terminal No.27 and 28) and
passenger's seat belt pre-tensioner
connector D-43 (terminal No.1 and 2), and
repair if necessary. Then go to Step 4.
NO :
Repair or replace it. than go to Step 4.
STEP 4. Check whether the diagnosis code is
reset.
Q: Is diagnosis code 68 set?
YES :
Return to Step 1.
NO :
The procedure is complete (If no
malfunctions are found in all steps, an
intermittent malfunction is suspected. Refer
to GROUP 00
−
How to Use
Troubleshooting/Inspection Service Points
).
AC301661
Connector: C-114
AE
SRS-ECU
C-114 (Y)
Center lower
panel
Harness side
connector
(front view)
40
23
24
41
32
42
33
31
29
38
39
30
37
28
21
22
35
26
36
27
34
25
AC301408AI
Connector: D-43
Harness side
connector
(front view)
1
2
TROUBLESHOOTING
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-116
Code No.68: Passenger's (front) seat belt pre-tensioner (squib) system (short-circuited to the power
supply) <R.H. drive vehicles>
OPERATION
The SRS-ECU judges how severe a collision is by
detecting signals from the front impact sensors and
the front air bag analog G-sensor. If the impact is
over a predetermined level, the SRS-ECU outputs an
ignition signal. At this time, if the front air bag safing
G-sensor is on, the pre-tensioner will deploy.
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set if passenger's (front) seat
belt pre-tensioner wire(s) are short-circuited to the
power supply.
PROBABLE CAUSES
•
Damaged wiring harnesses or connectors
•
Short to the power supply in the passenger's seat
belt pre-tensioner (squib) harness
•
Malfunction of the SRS-ECU
CONNECTOR
LOCK
SWITCH
NOTE
CONNECTOR
COUPLED: ON
CONNECTOR
UNCOUPLED: OFF
CONNECTOR
LOCK
SWITCH
MICROCOMPUTER
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
SRS-ECU
SEAT BELT
PRE-TENSIONER
(LH)
AIR BAG
DRIVE CIRCUIT
Passenger's (Front) Seat Belt Pre-tensioner (Squib)
TROUBLESHOOTING
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-117
DIAGNOSIS PROCEDURE
STEP 1. Check the passenger's seat belt
pre-tensioner. (Check whether the diagnosis
code is reset.)
(1) Disconnect the negative battery terminal.
(2) Disconnect passenger's seat belt pre-tensioner
connector D-29. Use a flat-tipped screwdriver to
pull out the locking button at the harness side
connector, and then disconnect the connector.
(3) Connect special tool dummy resistor (MB991865)
to special tool resistor harness (MB991884).
(4) Connect special tool (MB991884) to the D-29
harness side connector.
(5) Connect the negative battery terminal.
(6) Erase diagnosis code memory, and then check
the diagnosis code.
Q: Is diagnosis code 68 set?
YES :
Go to Step 2.
NO :
Replace the passenger's seat belt
pre-tensioner (Refer to
). Then
go to Step 4.
STEP 2. Measure the voltage at the SRS-ECU
connector C-114.
(1) Disconnect SRS-ECU connector C-114.
(2) Disconnect passenger's seat belt pre-tensioner
connector D-29. Use a flat-tipped screwdriver to
pull out the locking button at the harness side
connector, and then disconnect the connector.
AC308787
Connector: D-29
AE
1
2
Harness side
D-29 (B)
AC300147AE
Flat-tip screw
driver
Locking button
D-29 Driver's seat
belt pre-tensioner
connector
D-29 Harness side connector
MB991884
MB991885
AC300975AD
MB991865
(Dummy resistor : 3
Ω)
MB991884
(Resistor
harness)
D-29 Harness side connector
AC301661
Connector: C-114
AE
SRS-ECU
C-114 (Y)
Center lower
panel
Harness side
connector
(front view)
40
23
24
41
32
42
33
31
29
38
39
30
37
28
21
22
35
26
36
27
34
25
AC308787
Connector: D-29
AE
1
2
Harness side
D-29 (B)
AC300147AE
Flat-tip screw
driver
Locking button
D-29 Driver's seat
belt pre-tensioner
connector
D-29 Harness side connector
TROUBLESHOOTING
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-118
(3) Turn the ignition switch to the "ON" position,
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 voltage between C-114 harness
side connector terminals 27, 28 and body earth.
OK: 0 V
Q: Is the check result normal?
YES :
Erase the diagnosis code memory, and
check the diagnosis code. If diagnosis code
68 sets, replace the SRS-ECU (Refer to
NO :
Go to Step 3.
STEP 3. Connector check: SRS-ECU connector
C-114, passenger's seat belt pre-tensioner
connector D-29 and intermediate connector D-44
Q: Is the check result normal?
YES :
Check the harness wires for short circuit to
power supply between SRS-ECU connector
C-114 (terminal No.27 and 28) and
passenger's seat belt pre-tensioner
connector D-29 (terminal No.2 and 1), and
repair if necessary. Then go to Step 4.
NO :
Repair or replace it. than go to Step 4.
34 35 36 37 38 39 40 41 42
25 26 27 28 29 30 31 32 33
21 22
23 24
AC301038AB
C-114 Harness side
connector (rear view)
AC301661
Connector: C-114
AE
SRS-ECU
C-114 (Y)
Center lower
panel
Harness side
connector
(front view)
40
23
24
41
32
42
33
31
29
38
39
30
37
28
21
22
35
26
36
27
34
25
AC308787
Connector: D-29
AE
1
2
Harness side
D-29 (B)
AC308785
Connector: D-44
AF
Harness side
D-44 (B)
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