Mitsubishi Outlander XL. Manual — part 926

STEP 2. 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 "ON" position.

(3)

Check if the DTC is set.

(4)

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

Q:Is the DTC set?

YES:

Go to Step 3.

NO:

There is an intermittent malfunction such as poor

engaged connector(s) or open circuit (Refer to GROUP 00,
How to Cope with Intermittent Malfunction P.00-15).

STEP 3. Check the passenger's seat belt pre-tensioner.
(Using scan tool MB991958, read the diagnostic trouble
code.)

(1)

Disconnect the negative battery terminal.

ZC6018230000

Seat belt
pre-tensioner

Floor wiring harness side
connector (2-pin, black)

Locking
button

Flat-tipped
screwdriver

(2)

Disconnect passenger's seat belt pre-tensioner connector
D-130. 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.

ZC600214

Harness side
connector

MB991865
(Dummy resistor: 3

)

MB991884
(Resistor harness)

0000

(3)

Connect special tool MB991865 to special tool MB991884.

(4)

Connect special tool MB991884 to the D-130 harness side
connector.

(5)

Connect the negative battery terminal.

(6)

Erase diagnostic trouble code memory, and then check the
diagnostic trouble code.

Q:Is DTC B1C47 set?

YES:

Go to Step 4.

NO:

Replace the passenger's seat belt with pre-tensioner

(Refer to P.52B-345). Then go to Step 6.

STEP 4. Check the passenger's seat belt pre-tensioner
circuit. Measure the resistance at the SRS-ECU connector
C-27.

(1)

Disconnect SRS-ECU connector C-27.

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-235

SRS AIR BAG DIAGNOSIS

ZC6018230000

Seat belt
pre-tensioner

Floor wiring harness side
connector (2-pin, black)

Locking
button

Flat-tipped
screwdriver

(2)

Disconnect passenger's seat belt pre-tensioner connector
D-130. 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.

ZC5007880045

C-27 Harness side
connector (front view)

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

(3)

Check for continuity between C-27 harness side connector
terminals 43, 44 and body ground.
It should be an open circuit.

Q:Does continuity exist?

YES:

Go to Step 5.

NO:

Erase the diagnostic trouble code memory, and check

the diagnostic trouble code. If DTC B1C47 sets, replace
the SRS-ECU (Refer to P.52B-326). Then go to Step 6.

STEP 5. Check harness wires for short circuit to ground
between SRS-ECU connector C-27 (terminal No.43 and 44)
and passenger's seat belt pre-tensioner connector D-130
(terminal No.2 and 1).

Q:Are the harness wires between SRS-ECU connector C-27

(terminal No.43 and 44) and passenger's seat belt pre-

tensioner connector D-130 (terminal No.2 and 1) in good

condition?

YES:

Go to Step 6.

NO:

Replace the harness wires between SRS-ECU connector

C-27 and passenger's seat belt pre-tensioner connector
D-130. Then go to Step 6.

52B-236

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

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 B1C47 set?

YES:

Return to Step 1.

NO:

The procedure is complete.

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-237

SRS AIR BAG DIAGNOSIS

DTC B1C48: Front Passenger's Pre-tensioner (Squib) System (Shorted to Squib Circuit
Power Supply)

M15204000943USA0000010000

SEAT BELT
PRE-TENSIONER
(RH)

CONNECTOR
LOCK SWITCH

CONNECTOR
LOCK SWITCH

Seat Belt Pre-Tensioner (RH) (Squib) Circuit

SRS-ECU

: CONNECTOR COUPLED : ON
CONNECTOR UNCOUPLED : OFF

NOTE

ZC600876

Connector: C-27

C-27 (Y)

0025

ZC600879

Connector: D-130

D-130 (B)

0013

If DTC B1C48 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 front impact sensors and

the front air bag analog G-sensor. If the impact is over
a predetermined level, the SRS-ECU sends an
ignition signal. At this time, if the front air bag safing
G-sensor is on, the pre-tensioner will deploy.

52B-238

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS