Mitsubishi Lancer Evolution 8. Manual — part 109
SRS AIRBAGS – GENERAL, ON-VEHICLE SERVICE POINTS
52B-1
SECTION 52B
CONTENTS
Caution
To ensure safety, carefully read through the service precautions before starting work.
General
New servicing information has been established with the following changes. Apart from the information below, servicing is the
same as in the previous model.
• Front impact sensors added (vehicles not fitted with front passenger’s seat airbag module)
• Clock springs and seat belt pre-tensioners have been changed
Service Precautions
Precautions relating to the front impact sensors have been added. With the exception of the following, precautions are the
same as those for the previous model.
1. If there is a fault in a front impact sensor, then it must always be replaced by a new sensor.
3. When painting, if the temperature is likely to rise to 93°C or above, the front impact sensors should be removed in
advance.
General . . …... …. . . . . . 1
Service precautions . … . . . . . ...1
Special tools. …... … . . . . . ...2
Test equipment . …... … . . . . ..3
Troubleshooting. …... … . . . . .4
Post-Collision diagnosis. … . . . ..28
Servicing SRS airbag and seat belt pre-
tensioner components . . . . . . . 29
Caution labels. . . . . . . . .29
Front impact sensors. …. . . . . ..30
Airbag modules and clock
spring. …... … . . . . . . . . .
32
Seat belt pre-tensioner. . . . . . .34
Disposal procedures for airbag module
and seat belt pre-tensioner . . . . …34
2. If there is an abnormality in the SRS airbag harness connector, then
this must be replaced by a new one. If there is an abnormality in the
harness, then it must be repaired or replaced, in accordance with
the following table.
SRS-ECU connector
SRS-ECU
Terminal No.
Harness connection point
Measure
1, 2
Instrument panel harness
→
Front harness (RH)
→
Front impact sensor (RH)
Repair or replace respective
harnesses
3, 4
Instrument panel harness
→
Front harness (LH)
→
Front impact sensor (LH)
Repair or replace respective
harnesses
Tool
Number
Name
Use
MB991502
A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991825
F: MB991826
MUT-III Assembly
A: V.C.I (Vehicle
Communication
Interface)
B: USB cable
C: MUT-III main
harness A (for
vehicles fitted
with CAN
communications)
D: MUT-III main
harness B (for
vehicles not fitted
with CAN
communications)
E: Measurement
adapter
F: Trigger harness
Reading and erasing diagnosis codes
MB991502
MUT-II sub-
assembly
• Reading and erasing diagnosis codes
• Reading problem duration time
• Reading no. of memory erasure operations
MB991606 or
MB991613
SRS check harness
Checking SRS airbag electrical circuits
SRS AIRBAGS – SPECIAL TOOLS
52B-2
Special Tools
A
B
C
D
E
F
Name
Use
Digital circuit tester
Checking SRS airbag circuits (use a meter which
has a maximum test current of 2 mA or less in
the minimum resistance value range)
Tool
Number
Name
Use
MB991865
Dummy resistor
Checking electrical circuits of SRS airbags and
seat belt pre-tensioners
MB991884
Resistance harness
(for pre-tensioners)
Checking electrical circuits of seat belt pre-
tensioners
MB991885
Seat belt pre-
tensioner harness
adapter
Operating seat belt pre-tensioners from inside or
outside vehicle
MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222
Harness set
A: Check harness
B: LED harness
C: LED harness
adapter
D: Probe
Checking connectivity and measuring voltage at
SRS-ECU harness connectors
SRS AIRBAGS – SPECIAL TOOLS, TEST DEVICES
A
B
C
D
Test equipment
Device
13R0746
52B-3
SRS AIRBAGS – TROUBLESHOOTING
52B-4
Troubleshooting
With the exception of the following points, servicing follows the same procedure as in the previous model.
Remarks
In the Inspection procedure, based on the diagnosis code, the driver’s airbag module (squib) system is set up differently
depending on the type of steering wheel, as indicated below.
1. Type 1: Separate systems for steering wheel and airbag module system (fitted as standard in GSR, optional in RS)
2. Type 2: Integrated system for steering wheel and airbag module (fitted as standard in RS)
1. Basic procedure for fault diagnosis
Refer to Chapter 00 – How to Use Troubleshooting / Service Inspection Points.
2. Diagnosis function
2-1 Reading diagnosis codes
Connect the MUT-II/III to the 16-pin diagnosis connector and read out the diagnosis codes.
(Refer to Chapter 00 – How to Use Troubleshooting / Service Inspection Points.)
2-2 Erasing diagnosis codes
Connect the MUT-II/III to the 16-pin diagnosis connector and erase the diagnosis codes.
(Refer to Chapter 00 – How to Use Troubleshooting / Service Inspection Points.)
(Type 1)
(Type 2)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст