Mitsubishi Outlander XL. Manual - part 898

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-08 intermediate connector (connection
between curtain air bag harness and floor harness).

(4)

Connect the negative battery terminal.

(5)

Ignition switch: ON

ZC5007950016

C-27 Harness side
connector (front view)

(6)

Measure the voltage between the C-27 wiring harness side
connector terminal No. 39, 40 and body ground.
Voltage should measure 0 volt

Q:Is the measured 0 volt?

YES:

Go to Step 6.

NO:

Repair the wiring harness.

STEP 5. Voltage measurement at the D-08 intermediate
connector.

(1)

Disconnect the negative battery terminal.

ZC602163

Locking
button

Flat-tipped screwdriver

Inflator

Curtain air bag wiring
harness side connector

0000

To prevent the air bag from deploying unintentionally,
disconnect the curtain air bag module connector D-104 to
short the squib circuit.

(2)

Disconnect curtain air bag module (RH) D-104. 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.

(3)

Disconnect the D-08 intermediate connector (connection
between curtain air bag harness and floor harness).

ZC600212

D-08 Intermediate
connector (module side )
(front view)

4 mm or more

Terminal

Cable tie

Short
spring

Section
A - A

0001

(4)

Because the short spring is installed to the D-08 intermediate
connector (curtain air bag harness side), insert a cable tie [3
mm (0.12 inch) wide, 0.5 mm (0.02 inch) thick] between
terminals 1, 2 and the short spring to release the short spring.

(5)

Connect the negative battery terminal.

(6)

Ignition switch: ON

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-123

SRS AIR BAG DIAGNOSIS

ZC5007950017

D-08 Intermediate connector
(

Curtain air bag

harness side)

(rear view)

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

(7)

Check for continuity between the D-08 intermediate
connector (curtain air bag harness side) terminal No. 1, 2 and
the body ground.
Voltage should measure 0 volt.

Q:Is the measured voltage 0 volt?

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 B1B21 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-124

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

DTC B1B22: Curtain Air Bag Module (RH) (Squib) System (Squib Circuit Open)

M15204000959USA0000010000

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

NOTE

CURTAIN AIR BAG
MODULE
(SQUIB) (RH)

SRS-ECU

Curtain Air Bag Module (Squib) (RH) Circuit

ZC600876

Connector: C-27

C-27 (Y)

0025

ZC600880

Connectors: D-08, D-104

D-104 (B)

D-08 (Y)

0012

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-125

SRS AIR BAG DIAGNOSIS

If DTC B1B22 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 (RH) 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 (RH) (squib).

TROUBLESHOOTING HITS

｠

Open circuit in the curtain air bag module (RH)
(squib) circuit

｠

Improper connector contact

｠

Malfunction of the SRS-ECU

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

｠

MB991884: Resister harness

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958. Refer to "How to connect the
scan tool P.52B-31."

(2)

Turn the ignition switch to the "ON" position.

(3)

Diagnose the CAN bus line.

(4)

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

Q:Is the CAN bus line found to be normal?

YES:

Go to Step 2.

NO:

Repair the CAN bus line (Refer to GROUP 54D,

Diagnosis P.54D-17).

52B-126

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

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