SUPPLEMENTAL RESTRAINT SYSTEM(SRS) 8B-3
CAUTIONS
Failure to follow the correct service procedure can cause air bag damage or personal injury due to unexpected air
bag deployment. Before service (removal and installation of part, check for replacement), please be weal noticed offollowing items for your correct service.
1. For service, turn the ignition switch to ‘LOCK’ position and wait for 30 seconds after disconnecting the negative battery cable.
2. If the vehicle collapsed, remove the air bag ECU first to reserve the crash records.
3, Never use other vehicles’ air bag components and replace with specified new part.
4. Never disassemble or repair the air bag module, air bag unit and wiring harness to re-use.
5. Replace the air bag module and air bag unit with new if it dropped, cracked or damaged.
6. Only qualified technicians in service shop should check or repair the air bag,
7. Before service, should be well noticed of warning labels on the vehicle.
A. Sun Visor Side
[Warning] Pull down the sun visor and see SRS air bag warning lamp on the head lining. B. Head Lining
[Warning]
1 . This vehicle is equipped with air bag. Air bag is supplemental device for the seatbelt. Fasten your seatbelt.
2. This air bag should be replaced by authorized supplier within replacement intervals.
3. When the ignition key is turned to ON position, SRS warning lamp will turn on for 6 sec. and go off. In this case, the system is normal. For the following cases, see service manual. - SRS warning lamp does not turn on. - SRS warning lamp does not go off.- SRS warning lamp continues to blink.
C. Steering Wheel Body Inner
[Warning] Before removing the steering wheel, read service manual first. Set the front wheels straight forward
and align the center position marks of SRS clock spring. Improper removal or installation of the steering wheel can damage the SRS components. D. Engine Compartment
[Warning] This vehicle is equipped with air bag. Before checking the engine compartment, read servicemanual first. Faultuy check and service can cause SRS air bag deployment and system defects that can be led to severe damage. E. Battery Cable
[Warning]
Before disconnecting the battery power, read service manual first.
SUPPLEMENTAL RESTRAINT SYSTEM(SRS) 8B-19
Air Bag Horn (Relay) Remote Control (Electronic Circuit)
CLOCK SPRING
General SpecificationVoltage
Rating Operating VoltageCurrent Rating Air Bag Circuit Resistance Isolating ResistanceRotating Range DC 12V
DC 6 - 18V
10 - 30mA(6A,0.1second)
200 - 220mA
15mA
0.16 - 0.38 (-40°C - 85°C)
5M
2.7 - 3.1 Rotation from neutral Position to Both Sides
Notice
Clock spring can not be repaired.
Do not disassemble or modify.
To adjust to the center position, rotate clockwise until it stops and then rotate it counterclockwise 2.3 ± 0.2revolutions and align marks. If not, airbag system can
not work normally and driver can be injured seriously.
8B-20 SUPPLEMENTAL RESTRAINT SYSTEM(SRS) Removal & Installation Procedure preceding work : removal of steering wheel
1. Turn the ignition switch to “OFF” position and disconnectthe battery negative cable. Start the procedure after waiting over 3oseconds.
2. Unscrew 3 screws from lower cover on steering column shaft and remove the lower cover.
3. Unscrew 4 screws from clock spring and remove the clock
spring
Installation Notice
Don’t try to repair and modify the clock spring.
When aligning the neutral position, turn to clockwise until it stops, and turn to counter clockwise until the marks are aligned
SUPPLEMENTAL RESTRAINT SYSTEM(SRS) 8B-21
AIR BAG CONTROL UNIT(AC4) Removal & Installation Procedure AC4 is installed on the center portion of the front floor tunnel.
Built-in accelerometer sensor detects collision and determines action or non-action and ignition time. Notice
Do not disassemble the AC4 to repair. If defective, replace it. AC4 should not be shocked or vibrated by dropping on the ground or bumping. Replace the AC4 with new after air bag inflation.
1. Disconnect the negative battery cable and wait for 30seconds before starting service. Notice Though battery cable is disconnected, air bag control unit will maintain backup power for 150ms and air bag can beinflated, so wait for min.30 seconds.
2. Remove the console box and center fascia panel assembly.
3. Remove the heater control switch and audio assembly.
4. Remove the lower side panel of the driver ’ s portion and glove box.
5. Remove the lower main panel.
6. Release the lock lever of the AC4 connector and disconnect the connector.
7. Unscrew 3 nuts and remove the AC4.
NoticeFor installation, horizontal position should be secured for the better changes of collision pulse between the vehiclebody and air bag control unit.
8. Installation should follow the removal procedure in the reverse order.
Inspection Procedure
1. Check AC4 case and welt bolts for crack or deformation.
2. Check connector, lock lever and terminal for deformation. NoticeReplace the AC4 with new if dust, deformation or corrosion found.
8B-22 SUPPLEMENTAL RESTRAINT SYSTEM(SRS)GENERAL DESCRIPTION
AND SYSTEM OPERATION
INTRODUCTION SRS (Supplemental Restraint System) air bag protects driver and passenger by inflating air bag under collision and seat belt pre - tensioner is a supplemental equipment for seat belt
reducing shocks from the collision by pulling passenger’ s bodyagainst seat back at the same time of air bag inflation. Air bag unit has diagnosis functions and indicates system malfunctions to the driver by turning on the air bag warninglamp. CAUTION Perform the service procedures for the air bag system as ordered, if not, the air bag can be operated suddenly and it
could result in damage of air bag or injury. Before service(removal, installation, checking and replacement of parts),
observe the following instructions and service correctly.
1. To service, turn the ignition switch to ‘LOCK’ position and disconnect the negative battery cable and continue the procedures after approx. 30 seconds.
2. If the vehicle is damaged due to accident, remove the air bag ECU first to get the accident records.
3. Never use the other vehicle’s air bag parts and replace with genuine part, if required.
4. Do not disassemble or repair the air bag module, air bag unit and wiring harness to reuse.
5. Replace the air bag unit or air bag module if dropped, cracked or damaged.
SECTION 9A
BODY WIRING SYSTEM
Schematic and Routing Diagrams . . . . . . . . 9A-2
Power Distribution . . . . . . . . . . . . . . . . . . . . . . 9A-2
Starting & Charging (Gasoline HFM) . . . . . . . 9A-3
Starting & Charging (Diesel) . . . . . . . . . . . . . . 9A-4
Fuse Box and Relay . . . . . . . . . . . . . . . . . . . 9A-5
Location of Connectors by
Wiring Harness . . . . . . . . . . . . . . . . . . . . . 9A-7
Main . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A-7
Engine Room . . . . . . . . . . . . . . . . . . . . . . . . 9A-11
Floor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A-13
Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A-14
Driver's Door . . . . . . . . . . . . . . . . . . . . . . . . . 9A-15
Passenger's Door . . . . . . . . . . . . . . . . . . . . . 9A-15
TABLE OF CONTENTS
Caution: Disconnect the negative battery cable before removing or installing any electrical unit or when a tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless otherwisenoted.
Rear Left Door . . . . . . . . . . . . . . . . . . . . . . . 9A-16
Rear Right Door . . . . . . . . . . . . . . . . . . . . . . 9A-16
Tail Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A-17
Semi Automatic Air Conditioner . . . . . . . . . . 9A-18
Full automatic Air Conditioner . . . . . . . . . . . . 9A-19
Gasoline Engine (MSE) . . . . . . . . . . . . . . . . 9A-20
Gasoline Engine (HFM) . . . . . . . . . . . . . . . . 9A-21
Diesel Engine . . . . . . . . . . . . . . . . . . . . . . . . 9A-22
Manual Transmission . . . . . . . . . . . . . . . . . . 9A-23
Automatic Transmission (BENZ) . . . . . . . . . . 9A-24
Automatic Transmission (BTRA) . . . . . . . . . . 9A-25
Driver's Seat . . . . . . . . . . . . . . . . . . . . . . . . . 9A-26
9A-6 BODY WIRING SYSTEM Engine Room Fuse (EF) and Relay Box1 Fuse (15A) : ABS, ABD
2 Fuse (20A) : Sun Roof
3 Fuse (10A) : Air Bag
4 Fuse (15A) : Audio, Clock, Out Side Mirror
5 Fuse (30A) : Cigarette lighter, Power Socket
6 Fuse (30A) : Heater
7 Fuse (15A) : Door Lock
8 Fuse (30A) : Rear Heated
9 Fuse (10A) : Audio, Buzzer, Chime, Clock
10 Fuse (30A) : Power Window
11 Fuse (10A) : Immobilizer
12 Fuse (20A) : T/C
13 Fuse (15A) : Interior Lamp
14 Fuse (15A) : Hazard Lamp
15 Fuse (15A) : Stop Lamp
16 Fuse (15A) : Turn signal Lamp, Head Lamp
17 Fuse (10A) : Back up Lamp
18 Fuse (15A) : Cluster, STICS
19 Fuse (15A) : A/T, Diagnosis
20 Fuse (15A) : Over Voltage Protection Relay (Gasolin Only)
21 Fuse (15A) : Seat Heater
22 Fuse (15A) : ECS
23 Fuse (15A) : Front Wiper & Washer
24 Fuse (10A) : Rear Wiper & Washer, A/C
25 Relay : Front Wiper 26 Relay : ABS Warning Lamp
27 Relay : Flasher Unit
28 Relay : Fuel Pump (Gasoline Only)
29 Relay : Shift Lock (A/T)
30 Relay : Clutch Interlock & Neutral
31 Relay : Sun Roof
32 Relay : A/T ‘B’ Interlock (MB A/T)
33 Relay : Power Window
34 Relay : Rear Fog Lamp
35 Relay : ECS
36 Relay : Compressor (Diesel E/G)
Condenser Fan (Gasoline E/G)
37 Relay : Condenser Fan
38 Relay : Air Conditioner
39 Fuse (10A) : Tail Lamp
40 Fuse (15A) : Head Lamp(LH)
41 Fuse (15A) : Head Lamp(RH)
42 Fuse (15A) : Front Fog Lamp
43 Fuse (10A) : Horn
44 Fuse (10A) : Compressor
45 Relay : Resistor with Diode (Gasoline E/G)
46 Relay : Front fog Lamp
47 Relay : Condenser Fan
48 Relay : Tail Lamp
49 Relay : Horn
9A-8 BODY WIRING SYSTEM1 Fuse Box
2 Door Lock Relay
3 Relay Box
3.1 Front Wiper Relay
3.2 ABS Warning Lamp Relay ....................................ABD 5.0
3.3 Flasher Unit
3.4 Fuel Pump Relay ................................................. Gasoline E/G
3.5 Shift Lock Relay ................................................... Automatic Transmission
3.6 Clutch Interlock & Neutral Relay ...........................Manual Transmission or Automatic Transmission
3.7 Sun Roof Relay
3.8 Automatic T ransmission ‘B’ Switch Interlock ....... Automatic Transmission
3.9 Power Window Relay
3.10 Rear Fog Lamp Relay .......................................... Rear Fog Lamp
3.11 ECS Relay 4 Defogger Relay
5 Ground 1
6 Roof Wiring Connector
7 Diode 1
8 Front Door Wiring Connector
9 Front Door Wiring Connector
10 Front Door Wiring Connector 11 Front Door Wiring Connector
12 Kick Down Relay .................................................. Automatic Transmission
13 Floor Wiring Connector
14 Floor Wiring Connector
15 Floor Wiring Connector
16 ABD Floor Wiring Connector ................................ABD 5.0
17 ECS Floor Wiring Connector
18 Rear Iper & Washer Switch
19 Clutch Switch ........................................................ Manual Transmission
19-1 Clutch Switch ........................................................ E32 Gasoline E/G with Manual Transmission
20 Stop Lamp Switch
21 Outside Mirror Switch
22 Ignition Switch
23 Multi Function Switch
24 Multi Function Switch
25 Black Out Switch .................................................. Black Out Lamp
26 Black out switch ................................................... Black Out Lamp
27 Joint Connector (Tail)
28 Joint Connector (Ignition)
29 Cluster
30 Cluster ................................................................. Automatic Transmission
31 Cluster
32 Cluster
33 4WD Switch .......................................................... Except TOD
33-1 4WD Switch .......................................................... TOD
3 4 Hazard Switch
35 Ground 2
36 Pedal Module ....................................................... Gasoline E/G with MSE ECU
37 Audio Switch
3 8 Immobilizer ........................................................... Crypto Type, Gasoline E/G with MSE ECU or Diesel E/G
39 Ignition Switch
40 Multi Function Switch
4 1 STICS
4 2 STICS
4 3 REKES ................................................................. Remote Keyless