Mitsubishi Outlander GS45X. Manual - part 1383

SERVICE PRECAUTIONS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-27

.

WARNING

•

The SRS components and seat belt with pre-ten-
sioner should not be subjected to heat, so remove 
the SRS-ECU, driver’s and front passenger’s air 
bag modules, clock spring, side-airbag modules, 
Curtain air bag modules, front and side impact 
sensor and seat belt pre-tensioner before drying or 
baking the vehicle after painting.

•

SRS-ECU, air bag module, clock spring, impact 
sensor: 93

°

 C (200

°

 F) or more

•

Seat belt with pre-tensioner 90

°

C (194

°

 F) or 

more

•

After servicing the SRS system, check the warning 
light operation to make sure that the system func-
tions properly. (Refer to 

P.52B-3

).

•

Make certain that the ignition switch is in the 
"LOCK"(OFF) position when the scan tool is con-
nected or disconnected.

45, 46

Floor wiring harness 

→ Seat belt 

pre-tensioner (LH)

Correct or replace the floor wiring 
harness.

49, 50

Floor wiring harness 

→ Side impact 

sensor (LH)

Correct or replace the floor wiring 
harness.

51, 52

Floor wiring harness 

→ Side impact 

sensor (RH)

Correct or replace the floor wiring 
harness.

55, 58

Floor wiring harness 

→ Passenger’s 

seat belt buckle switch

Correct or replace the floor wiring 
harness.

61

Floor wiring harness 

→ ETACS-ECU 

(fuse No.18)

Correct or replace the floor wiring 
harness.

62

Floor wiring harness 

→ ETACS-ECU 

(fuse No.12)

Correct or replace the floor wiring 
harness.

SRS-ECU terminal No.

Destination of wiring harness

Corrective action

SRS AIR BAG DIAGNOSIS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-28

SRS AIR BAG DIAGNOSIS

INTRODUCTION TO DIAGNOSIS

M1524005000523

The SRS system is controlled by the SRS-ECU. The 
SRS-ECU judges how severe a collision is by detect-
ing signals from the left and right front impact sen-
sors 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-424

).

TROUBLESHOOTING STRATEGY

M1524003100892

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.
1. Gather information about the problem from the 

customer.

2. Verify that the condition described by the 

customer exists.

3. Check the vehicle for any SRS diagnostic trouble 

codes (SRS DTC).

4. 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

.

5. 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.

6. 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

M1524013800201

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

SRS AIR BAG DIAGNOSIS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-29

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Ensure that the ignition switch is at the "LOCK" (OFF) 

position.

2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824 

and the personal computer.

4. Connect special tool MB991910 to special tool MB991824.
5. Connect special tool MB991910 to the data link connector.
6. 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.

7. 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

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting 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.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "System select" from the start-up screen.
4. Select "From 2006 MY" of "Model Year." When the "Vehicle 

Information" is displayed, check the contents.

5. 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.

6. Select "Diagnostic Trouble Code" to read the DTC.
7. If a DTC is set, it is shown.
8. Choose "Erase DTCs" to erase the DTC.

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector

SRS AIR BAG DIAGNOSIS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-30

SRS WARNING LIGHT CHECK

M1524004301171

1. Check that the SRS warning light illuminates when the 

ignition switch is in the "ON" position.

2. Check that it illuminates for approximately seven seconds 

and then goes out.

3. If not, check for DTC.

PASSENGER'S SEAT BELT WARNING LIGHT 
CHECK

M1524026200113

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.
The light comes on when a person sits on the front passenger 
seat but does not fasten the seat belt.

PASSENGER'S AIR BAG OFF INDICATOR LIGHT 
CHECK

M1524026300154

.

SYSTEM CHECK

Check that the passenger’s air bag OFF indicator light illumi-
nates when the ignition switch is in the "ON" position.
Check that it illuminates for approximately seven seconds and 
then goes out.
In the following situations, the indicator will stay on to show that 
the passenger’s (front) air bag is not operational.

• The occupant classification-ECU and weight sensor sense 

66 pounds (30 kg) on the front passenger seat.

• The front passenger’s seat is not occupied.

.

AC901647

SRS Warning light

AB

AC607689AF

Passenger's seat belt 
warning light

AC607689

Passenger's air bag OFF 
indicator light

AG