Mitsubishi Outlander XL. Manual - part 894

ZC600210

Lock lever

0000

(2)

While pushing the part "A" indicated in the figure of the
harness side connector, turn the lock lever to the direction of
the arrow to release the lock lever, and disconnect the C-27
SRS-ECU connector.

(3)

Disconnect the D-13 intermediate connector (connection
between curtain air bag harness and floor harness).

ZC5007880024

D-13 Intermediate connector
(Curtain air bag harness side)
(rear view)

C-27 Harness side
connector (front view)

Do not insert a probe into the terminal from D-13
intermediate connector front side directly, as the connector
contact pressure may be weakened.

(4)

Check for continuity between the following terminals. It
should be less than 2 ohms.

｠

SRS-ECU connector C-27 (terminal No.41) and the
intermediate connector D-13 (terminal No.1)

｠

SRS-ECU connector C-27 (terminal No.42) and the
intermediate connector D-13 (terminal No.2)

Q:Does continuity exist?

YES:

Go to Step 6.

NO:

Repair the wiring harness between the C-27 harness

side connector terminal No. 41, 42 and the D-13
intermediate connector (floor harness side) terminal No.
1, 2.

STEP 5. Resistance measurement at the D-13 intermediate
connector terminal No. 1, 2 and the D-109 curtain air bag
module harness side connector terminal No. 1, 2.

(1)

Disconnect the negative battery terminal.

(2)

Disconnect the D-13 intermediate connector (connection
between curtain air bag harness and floor harness).

ZC602163

Locking
button

Flat-tipped screwdriver

Inflator

Curtain air bag wiring
harness side connector

0000

(3)

Disconnect curtain air bag module (LH) D-109. Use a flat-
tipped screwdriver to unlock the locking button at the harness
side connector by withdrawing it toward you in two stages,
and then disconnect the connector.

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-107

SRS AIR BAG DIAGNOSIS

ZC603339

MB991884

D-109
Harness side
connector

0004

(4)

Connect special tool MB991884 to the removed D-109
harness side connector.

ZC5007880025

D-13 Intermediate connector
(Curtain air bag harness side)
(rear view)

Resistor

harness

connector

Do not insert a probe into the terminal from D-13
intermediate connector front side directly, as the connector
contact pressure may be weakened.

(5)

Check for continuity between the following terminals. It
should be less than 2 ohms.

｠

Intermediate connector D-13 (terminal No.1) and resistor
harness connector terminal No.2)

｠

Intermediate connector D-13 (terminal No.2) and resistor
harness connector terminal No.1)

Q:Is the check result normal?

YES:

Replace the curtain air bag module (squib) (Refer

to P.52B-341).

NO:

Repair the wiring harness.

STEP 6. Recheck for diagnostic trouble code.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

Check again if the DTC is set.

(1)

Erase the DTC.

(2)

Turn the ignition switch to the "ON" position.

(3)

Check if the DTC is set.

(4)

Turn the ignition switch to the "LOCK" (OFF) position.

Q:Is DTC B1B1A set?

YES:

Replace SRS-ECU. (Refer to P.52B-326.)

NO:

Intermittent Malfunction (Refer to GROUP 00, How to

Use Troubleshooting/Inspection Service Points - How to
Cope with Intermittent Malfunction P.00-15).

52B-108

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

DTC B1B1B: Curtain Air Bag Module (LH) (Squib) System (Short Circuit between Squib
Circuit Terminals)

M15204000963USA0000010000

CURTAIN AIR BAG
MODULE
(SQUIB) (LH)

SRS-ECU

Curtain Air Bag Module (Squib) (LH) Circuit

: CONNECTOR LOCK SWITCH
CONNECTOR COUPLED : ON
CONNECTOR UNCOUPLED : OFF

NOTE

ZC600876

Connector: C-27

C-27 (Y)

0025

ZC6008800011

D-13 (Y)

D-109 (B)

Connectors: D-13, D-109

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-109

SRS AIR BAG DIAGNOSIS

If DTC B1B1B is set in the SRS-ECU, always
diagnose the CAN main bus line.

CIRCUIT OPERATION

｠

The SRS-ECU judges how severe a collision is by
detecting  signals  from  the  side  impact  sensors
installed on the lower side of the center pillar and at
the  quarter  panel  inner.  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 SRS side-airbag will inflate.

｠

The ignition signal is input to the curtain air bag
module (LH) to inflate the curtain air bag.

DTC SET CONDITIONS
This DTC is set if there is abnormal resistance
between the input terminals of the curtain air bag
module (LH) (squib).

TROUBLESHOOTING HITS

｠

Improper engaged connector or defective short
spring*

｠

Short circuit between the curtain air bag module
(LH) (squib) circuit terminals

｠

Damaged connector(s)

｠

Malfunction of the SRS-ECU

NOTE:

*: The squib circuit connectors integrate a

"short" spring (which prevents the air bag from
deploying unintentionally due to static
electricity by shorting the positive wire to the
ground wire in the squib circuit when the
connectors are disconnected) (Refer to P.52B-31).
Therefore, if connector C-27, D-13 or D-109 is
damaged or improperly engaged, the short spring
may not be released when the connector is
connected.

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: Vehicle Communication Interface (V.C.I.)

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A (Vehicles with
CAN Communication System)

｠

MB991865: Dummy resistor

｠

MB991866: Resister harness

52B-110

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

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