Mitsubishi Outlander GS45X. Manual - part 1481

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-419

STEP 4. Recheck for diagnostic trouble code.
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 set?

YES : Troubleshoot for the relevant DTC.
NO :  Go to Step 5

STEP 5. Recheck of the SRS warning light
(1) Connect the negative battery terminal.
(2) Ignition switch: ON
Q: Does the light stay on?

YES : Replace the SRS-ECU (Refer to 

P.52B-436

).

NO :  The procedure is complete.

DATA LIST REFERENCE TABLE

M1524003500414

DATA LIST OUTPUT

.

The following items can be read by the scan tool 
from the SRS-ECU input data.

.

The following items can be read by the scan tool from the occupant classification-ECU input data.

Item No.

Check items

Check conditions

Normal conditions

01

SRS warning light 
illumination request

• Ignition switch: ON

• After warning lamp pre-check

OFF

• Ignition switch: ON

• During warning lamp 

pre-check

ON

02

Pass. SRS light "ON" 
request

• Ignition switch: ON

• After warning light pre-check

OFF

• Ignition switch: ON

• During warning light 

pre-check

ON

04

Passenger’s seatbelt 
switch

• Ignition switch: ON

• After warning light pre-check

• Wear the passenger seatbelt.

Fastened

• Ignition switch: ON

• After warning light pre-check

• Undo the passenger seatbelt.

Unfastened

05

Passenger seat airbag 
ignition

• Ignition switch: ON

• After warning light pre-check

• Apply a load to the passenger 

seat.

Permission

• Ignition switch: ON

• After warning light pre-check

• Undo a load from a 

passenger seat.

Prohibition

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-420

NOTE: *: Radio Frequency Integrated Circuit

ACTUATOR TEST REFERENCE TABLE

M1524003600165

The scan tool activates the following actuators for 
testing.

FAIL-SAFE FUNCTION REFERENCE TABLE

M1524003700151

If the SRS-ECU determines that the following parts 
are defective, the SRS-ECU operates the SRS warn-
ing light and controls as follows.

• If the seat slide sensor is defective, the SRS-ECU 

determines that the seat is in its backward posi-
tion and controls the air bag. 

Item No.

Display on scan tool

Check conditions

Normal conditions

01

Passenger weight

Apply a load to the passenger 
seat.

−2048 Kg (4515 Ib) to 2048 Kg 

(4515 Ib)

02

Dr seat position sensor 
current

Slide the seat the back-end to 
the front-position.

0 to 1,700 mA

03

Dr seat position sensor 
voltage

Slide the seat the back-end to 
the front-position.

0 to 5,000 mV

07

Dr seat position sensor 
status

Slide the seat the back-end to 
the front-position.

Not Frontal Zone/Frontal 
Zone/Undetermined/No Dr 
STPS/No Pa STPS/Seat 
sensor DTC

08

occupant classification 
status

Apply a load to the passenger 
seat.

Empty/RFIS*/Child/More 
5th%/Less 5th%/Undermined

10

Battery voltage

Always

6.5 to 16 V

21

Pa seat weight sensor 1 
RR

Apply a load to the passenger 
seat.

−2048 Kg (4515 Ib) to 2048 Kg 

(4515 Ib)

22

Pa seat weight sensor 1 
RR volt

Apply a load to the passenger 
seat.

0 to 5,000 mV

23

Pa seat weight sensor 2 
RF

Apply a load to the passenger 
seat.

−2048 Kg (4515 Ib) to 2048 Kg 

(4515 Ib)

24

Pa seat weight sensor 2 
RF volt

Apply a load to the passenger 
seat.

0 to 5,000 mV

25

Pa seat weight sensor 3 
LF

Apply a load to the passenger 
seat.

−2048 Kg (4515 Ib) to 2048 Kg 

(4515 Ib)

26

Pa seat weight sensor 3 
LF volt

Apply a load to the passenger 
seat.

0 to 5,000 mV

27

Pa seat weight sensor 4 
LR

Apply a load to the passenger 
seat.

−2048 Kg (4515 Ib) to 2048 Kg 

(4515 Ib)

28

Pa seat weight sensor 4 
LR volt

Apply a load to the passenger 
seat.

0 to 5,000 mV

30

VIN Information

Always

−

Item No.

Item name

Test item

Driven 
component

01

SRS warning light

SRS warning light illumination

ON

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-421

• If the occupant classification sensor or the occu-

pant classification-ECU is defective, the 
SRS-ECU determines that the occupant classifi-
cation is class 2 [The occupant classification sen-
sor detects 30 kg (66 pounds) or more.] and 
controls the air bag and the passenger’s air bag 
OFF indicator light.

ACCURACY CHECK OF OCCUPANT CLASSIFICATION SENSOR

M1524025800093

The scan tool can be used to perform the next func-
tion.

• Zero-Calibration & System Test

SPECIAL TOOLS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-422

SPECIAL TOOLS

M1524000701296

Tool

Tool number and name

Supersession

Application

MB990784
Ornament remover

General service tool

Removal of cover.

MB990803
Steering wheel puller

General service tool

Steering wheel removal

MB991958

a: MB991824
b: MB991827
c: MB991910
d: MB991911
e: MB991914
f: MB991825
g: MB991826

Scan tool (M.U.T.-III sub 
assembly)

a: Vehicle communication 

interface (V. C. I.) 

b: M.U.T.-III USB cable
c: M.U.T.-III main harness 

A (Vehicles with CAN 
communication 
system)

d: M.U.T.-III main 

harness B (Vehicles 
without CAN 
communication 
system)

e: M.U.T.-III main 

harness C (for Chrysler 
models only)

f: M.U.T.-III measurement 

adapter

g: M.U.T.-III trigger 

harness

MB991824-KIT
NOTE: g: MB991826 
M.U.T.-III Trigger 
Harness is not 
necessary when 
pushing V.C.I. ENTER 
key.

CAUTION

For vehicles with CAN 
communication, use M.U.T.-III 
main harness A to send 
simulated vehicle speed. If you 
connect M.U.T.-III main harness 
B instead, the CAN 
communication does not 
function correctly.
Checking diagnostic trouble code

MB991865
Dummy resistor

SRS air bag and seat belt 
pre-tensioner circuit check

MB990784

MB990803AB

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

Do not use

a

b

c

d

e

f

g

Do not use

MB991865