Mitsubishi Outlander XL. Manual - part 875

SRS AIR BAG DIAGNOSIS

INTRODUCTION TO DIAGNOSIS

M15204000050USA0000010000

The SRS system is controlled by the SRS-ECU. The
SRS-ECU  judges  how  severe  a  collision  is  by
detecting signals from the left and right front impact
sensors and side impact sensors, front air bag analog
G-sensor and front air bag safing G-sensor and side-
airbag  safing  G-sensor.  If  the  impact  is  over  a
predetermined level, the SRS-ECU sends an ignition
signal. At this time, if the safing G-sensor is on, the
SRS air bag will inflate. (The passenger's air bag may
not inflate according to the occupant detection data
from  the  occupant  classification-ECU.)  The  SRS
warning  light  in  the  combination  meter  alerts  a

malfunction of the SRS system. If the following
symptoms occur even when the vehicle has not been
in a collision, there may be a malfunction in the SRS
system.

｠

The SRS warning light does not go off within
approximately seven seconds after the ignition
switch has been turned to the "ON" position.

｠

The SRS warning light does not illuminate when the
ignition switch is turned to the "ON" position.

Refer to Post-collision Diagnosis when inspecting and
servicing a vehicle that has been in a collision (Refer
to P.52B-315).

TROUBLESHOOTING STRATEGY

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Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will be sure that you
have exhausted all of the possible ways to find a SRS
fault.

Gather information about the problem from the
customer.

Verify that the condition described by the customer
exists.

Check the vehicle for any SRS diagnostic trouble
codes (SRS DTC).

If you cannot verify the condition but there are no
SRS DTCs, the malfunction is intermittent. Refer to
GROUP 00, How to Use Troubleshooting -

Inspection Service Points - How to Cope with
Intermittent Malfunctions P.00-15.

If there is a SRS DTC, record the code number, then
erase the code from vehicle memory using scan tool
(M.U.T.-III Sub Assembly) MB991958.

Recreate the SRS DTC set conditions to see if the
same SRS DTC will be set again.

｠

If the same SRS DTC is set again, follow the
Inspection Chart for the DTC and find the fault.

｠

If you cannot get the same SRS DTC to be set
again,  the  malfunction  is  intermittent.  Refer  to
GROUP  00,  How  to  Use  Troubleshooting  -
Inspection  Service  Points  -  How  to  Cope  with
Intermittent Malfunctions P.00-15.

DIAGNOSTIC FUNCTION

M15204000984USA0000010000

HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)

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

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-31

SRS AIR BAG DIAGNOSIS

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.

Ensure that the ignition switch is at the "LOCK" (OFF) position.

Start up the personal computer.

Connect special tool MB991827 to special tool MB991824 and
the personal computer.

Connect special tool MB991910 to special tool MB991824.

Connect special tool MB991910 to the data link connector.

Turn the power switch of special tool MB991824 to the "ON"
position.

NOTE:

When special tool MB991824 is energized, special

tool MB991824 indicator light will be illuminated in a
green color.

Start the M.U.T.-III system on the personal computer.

NOTE:

Disconnecting scan tool MB991958 is the reverse of

the connecting sequence, making sure that the ignition
switch is at the "LOCK" (OFF) position.

HOW TO READ AND ERASE DIAGNOSTIC

TROUBLE CODES

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

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.

NOTE:

If the battery voltage is low, diagnostic trouble

codes will not be set. Check the battery if scan tool
MB991958 does not display.

Connect scan tool MB991958 to the data link connector.

Turn the ignition switch to the "ON" position.

Select "System select" from the start-up screen.

Select "From 2006 MY" of "Model Year." When the "Vehicle
Information" is displayed, check the contents.

Select "SRS-AIR BAG" from "System List," and press the "OK"
button.

NOTE:

When the "Loading Option Setup" list is displayed,

check the applicable item.

Select "Diagnostic Trouble Code."

If a DTC is set, it is shown.

Choose "Erase DTCs" to erase the DTC.

52B-32

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

SRS WARNING LIGHT CHECK

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ZC601295

SRS Warning light

0000

Check that the SRS warning light illuminates when the ignition
switch is in the "ON" position.

Check that it illuminates for approximately seven seconds and
then goes out.

If not, check for DTC.

PASSENGER'S SEAT BELT WARNING LIGHT

CHECK

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ZC601349

Passenger’s seat belt
warning light

0002

When an adult on the front passenger's seat wears the seat belt
with the ignition switch "ON," confirm that the passenger's seat
belt warning light goes out..

PASSENGER'S AIR BAG OFF INDICATOR LIGHT

CHECK

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ZC601349

Passenger’s air bag OFF
indicator light

0003

Check that the passenger’s air bag OFF indicator light
illuminates when the ignition switch is in the "ON" position.

Check that it illuminates for approximately seven seconds and
then goes out.

If not, check for DTC.

DIAGNOSTIC TROUBLE CODE CHART

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During diagnosis, a DTC code associated with
another system may be set when the ignition
switch

turned

with

connector(s)

disconnected. After completing the repair,

confirm all systems for DTC code(s). If DTC code
(s) are set, erase them all.
Inspect according to the inspection chart that is
appropriate for the DTC.

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-33

SRS AIR BAG DIAGNOSIS

Diagnostic trouble
Code No.

Inspection item

Reference page

B1206

Passenger's air bag OFF indicator light (open circuit)

P.52B-38

B1207

Passenger's air bag OFF indicator light (short circuit between
circuit terminal)

P.52B-42

B1B00

Driver's air bag module (1st squib) system (shorted to squib
circuit ground)

P.52B-47

B1B01

Driver's air bag module (1st squib) system (shorted to squib
circuit power supply)

P.52B-53

B1B02

Driver's air bag module (1st squib) system (squib circuit
open)

P.52B-58

B1B03

Driver's air bag module (1st squib) system (short circuit
between squib circuit terminals)

P.52B-64

B1B04

Driver's air bag module (2nd squib) system (shorted to squib
circuit ground)

P.52B-47

B1B05

Driver's air bag module (2nd squib) system (shorted to squib
circuit power supply)

P.52B-53

B1B06

Driver's air bag module (2nd squib) system (squib circuit
open)

P.52B-58

B1B07

Driver's air bag module (2nd squib) system (short circuit
between squib circuit terminals)

P.52B-64

B1B08

Passenger's (front) air bag module (1st squib) system
(shorted to squib circuit ground)

P.52B-71

B1B09

Passenger's (front) air bag module (1st squib) system
(shorted to squib circuit power supply)

P.52B-76

B1B0A

Passenger's (front) air bag module (1st squib) system (squib
circuit open)

P.52B-82

B1B0B

Passenger's (front) air bag module (1st squib) system (short
circuit between squib circuit terminals)

P.52B-86

B1B0C

Passenger's (front) air bag module (2nd squib) system
(shorted to squib circuit ground)

P.52B-71

B1B0D

Passenger's (front) air bag module (2nd squib) system
(shorted to squib circuit power supply)

P.52B-76

B1B0E

Passenger's (front) air bag module (2nd squib) system (squib
circuit open)

P.52B-82

B1B0F

Passenger's (front) air bag module (2nd squib) system (short
circuit between squib circuit terminals)

P.52B-86

B1B18

Curtain air bag module (LH) (squib) system (shorted to squib
circuit ground)

P.52B-94

B1B19

Curtain air bag module (LH) (squib) system (shorted to squib
circuit power supply)

P.52B-99

B1B1A

Curtain air bag module (LH) (squib) system (squib circuit
open)

P.52B-104

B1B1B

Curtain air bag module (LH) (squib) system (short circuit
between squib circuit terminals)

P.52B-109

52B-34

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

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