Mitsubishi L200. Manual — part 627
AC801404
AK
Connector: C-155
C-155 (Y)
Harness side
connector
(rear view)
AC903856BN
Connector: C-157 <LHD>
C-157 (Y)
AC903868
CE
Connector: C-157 <RHD>
C-157 (Y)
AC806050
Connector: C-156 <LHD>
C-156 (Y)
AB
Floor wiringharness
Instrument panel
wiring harness
AC806051
Connector: C-156 <RHD>
C-156 (Y)
AB
Floor wiringharness
Instrument panel
wiring harness
AC600868
Outer housing of the intermediate connector
(Instrument panel wiring harness side)
AH
TROUBLESHOOTING
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-179
(2) Disconnect connectors C-155, C-156 and C-157
and then reconnect them. Slide the outer hosing
of intermediate connector C-156 and C-157 in the
arrow direction shown.
AC903885AQ
Connector: D-32 <LHD>
Harness side
connector
(rear view)
D-32 (B)
AC903886 AL
Connector: D-32 <RHD>
Harness side
connector
(rear view)
D-32 (B)
AC609928AL
Locking
button
Flat-tipped
screwdriver
Inflator
D-32 Harness side
connector (2-pin, black)
(3) Use the flat-tipped screwdriver to pull out the
locking button of D-32 harness side connector to
the direction of the arrow. After releasing the lock,
disconnect the connector. Then, reconnect the
connector.
(4) Connect the negative battery terminal.
(5) Erase the diagnosis code memory, and check the
TROUBLESHOOTING
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-180
diagnosis code.
Q: Is diagnosis code B1440 set?
YES :
Go to Step 4.
NO :
The procedure is complete. It is assumed
that diagnosis code B1440 set as connector
C-155, C-156, C-157 or D-32 was engaged
improperly.
STEP 4. Check the diagnosis code by connecting
a dummy resistor. (M.U.T.-III diagnosis code)
(1) Disconnect the negative battery terminal.
AC903885AQ
Connector: D-32 <LHD>
Harness side
connector
(rear view)
D-32 (B)
AC903886 AL
Connector: D-32 <RHD>
Harness side
connector
(rear view)
D-32 (B)
AC609928AL
Locking
button
Flat-tipped
screwdriver
Inflator
D-32 Harness side
connector (2-pin, black)
(2) Use the flat-tipped screwdriver to pull out the
locking button of D-32 harness side connector to
the direction of the arrow. After releasing the lock,
disconnect the connector.
AC301553
D-32 Harness
side connector
CL
MB991865
(Dummy resistor: 3 )
MB991884
(Resistor harness)
(3) Connect the dummy resistor (Special tool:
MB991865) to the resistor harness (Special tool:
MB991884).
(4) Connect special tool (MB991884) to the D-32
harness side connector.
(5) Connect the negative battery terminal.
(6) Erase the diagnosis code memory, and check the
diagnosis code.
Q: Is diagnosis code B1440 set?
YES :
Go to Step 5.
NO :
Replace the curtain air bag module (RH)
(Refer to
).
TROUBLESHOOTING
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-181
STEP 5. Resistance measurement at SRS-ECU
connector C-155.
(1) Disconnect the negative battery terminal.
AC801404
AK
Connector: C-155
C-155 (Y)
Harness side
connector
(rear view)
(2) Disconnect SRS-ECU connector C-155.
DANGER
To prevents the air bag from deploying unin-
tentionally, disconnect the curtain air bag
module (RH) connector D-32 to short the
squib circuit.
AC903885AQ
Connector: D-32 <LHD>
Harness side
connector
(rear view)
D-32 (B)
AC903886 AL
Connector: D-32 <RHD>
Harness side
connector
(rear view)
D-32 (B)
AC609928AL
Locking
button
Flat-tipped
screwdriver
Inflator
D-32 Harness side
connector (2-pin, black)
(3) Use the flat-tipped screwdriver to pull out the
locking button of D-32 harness side connector to
the direction of the arrow. After releasing the lock,
disconnect the connector.
AC801564
Section
A - A
C-155 Harness side connectors
(front view)
Cable tie
Terminal
7 mm or more
AF
Short spring
A
A
CAUTION
Insert an insulator such as a cable tie to a depth
of 7 mm or more, otherwise the short spring will
not be released.
(4) Insert a cable tie [3 mm wide, 0.5 mm thick]
between terminals 55, 56 and the short spring to
release the short spring.
AC800962 BR
C-155 Harness side
connector (rear view)
CAUTION
Do not insert a test probe into the terminal from
its front side directly as the connector contact
pressure may be weakened.
(5) Resistance measurement between C-155
harness side connector terminals 55 and 56.
OK: Open circuit
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the harness wires between SRS-
ECU connector C-155 (terminal No.55 and
56) and curtain air bag module (RH)
connector D-32 (terminal No.2 and 1).
STEP 6. Check whether the diagnosis code is
reset.
Q: Is diagnosis code B1440 set?
TROUBLESHOOTING
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-182
YES :
).
NO :
An intermittent malfunction is suspected
(Refer to GROUP 00, How to Cope with
Intermittent Malfunction ).
Code No.B1441: Curtain air bag module (RH) (squib) system (open-circuited in the squib circuit)
AC805929
SRS-ECU
CURTAIN AIR BAG MODULE
(SQUIB) (RH)
Curtain Air Bag Module (Squib) (RH) Circuit
NOTE
: CONNECTOR LOCK SWITCH
CONNECTOR COUPLED: ON
CONNECTOR UNCOUPLED: OFF
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple SI : Silver
AC
RH CURTAIN AIR BAG
DRIVE CIRCUIT
OPERATION
The SRS-ECU judges how severe a collision is by
detecting signals from the left and right side impact
sensors. If the impact is over a predetermined level,
the SRS-ECU sends an ignition signal. At this time, if
the side-airbag safing G-sensor is on, the curtain air
bag module will deploy.
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set if curtain air bag (RH)
squib wire(s) are open-circuited.
PROBABLE CAUSES
• Open circuit in the curtain air bag module (RH)
(squib) circuit
• Improper connector contact
• Malfunction of the SRS-ECU
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