2003 SSANGYONG MUSSO ignition

8B-10 SUPPLEMENTAL RESTRAINT SYSTEM(SRS)
1. Position the ignition switch to ‘OFF’.
2. Connect the harness connector of scanner to the diagnosissocket in engine compartment.
3. Turn the ignition switch to ‘ON’ position.
4. Select “Electronic control vehicle diagnosis” from function selection display and press ‘Enter’ .
5. Select “Musso (’98 model year)” from vehicle model selection display and press ‘Enter’ .
6. Select “Electronic air bag” from control system selection display and press ‘Enter’ .
7. Select “Self-diagnosis” from diagnosis item selection display.
Notice
Check sensor value of output display, if necessary.
8. Determine the fault code and trace defective component.
NoticeRefer to self-diagnosis list.
SELF DIAGNOSIS

SUPPLEMENTAL RESTRAINT SYSTEM(SRS) 8B-11
Self-Diagnosis List
Fault
CodeDefects Service Hint
01 Driver’ s squib (+) side No. 1 Short of (+) side No. 1 in the driver ’ s squib circuit.
Check connection of connector.
Check the ECU.Appli-
cation
02 Driver’ s squib (+) side No. 2 Short of (+) side No. 2 in the driver ’ s squib circuit.
Check connection of connector.
Check the ECU.X
03 Driver’ s squib (+) side No. 3 Short of (+) side No. 3 in the driver ’ s squib circuit.
Check connection of connector.
Check the ECU.X
04 Driver’ s squib (+) side No. 4 Short of (+) side No. 4 in the driver ’ s squib circuit.
Check connection of connector.
Check the ECU.X
05 Driver’ s squib ground (-) side No. 1 Short of ground side No. 1 in the driver ’ s squib
circuit.
Check and replace the ECU.
06 Driver’ s squib ground (-) side No. 2 Short of ground side No. 2 in the driver ’ s squib
circuit.
Check and replace the ECU.X
07 Driver’ s squib ground (-) side No. 3 Short of ground side No. 3 in the driver ’ s squib
circuit.
Check and replace the ECU.X
08 Driver’ s squib ground (-) side No. 4 Short of ground side No. 4 in the driver ’ s squib
circuit.
Check and replace the ECU.X
09 Energy shutdown switch No. 1 Air bag control unit internal defects.
Check and replace the ECU.
10 Energy shutdown switch No. 2 Air bag control unit internal defects.
Check and replace the ECU.X
11 Energy shutdown switch No. 3 Air bag control unit internal defects.
Check and replace the ECU.X
12 Energy shutdown switch No. 4 Air bag control unit internal defects.
Check and replace the ECU.X
13 Ignition switch wire No. 1 Air bag control unit internal defects.
Check and replace the ECU.
14 Ignition switch wire No. 2 Air bag control unit internal defects.
Check and replace the ECU.X
15 Ignition switch wire No. 3 Air bag control unit internal defects.
Check and replace the ECU.X
16 Ignition switch wire No. 4XAir bag control unit internal defects.
Check and replace the ECU.

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-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

9A-20 BODY WIRING SYSTEM
GASOLINE ENGINE (MSE)1 ECU Main Wiring Connector
2 ECU Main Wiring Connector
3 Crankshaft Position Sensor
4 Oil Pressure Switch
5 Knock Sensor 2
6 Hot-Film Air Mass Sensor
7 Injector 6
8 Injector 5
9 Injector 4
10 Injector 3
11 Injector 2
12 Injector 1
13 Camshaft Adjustment Magnet 14 Ignition Coil 3
15 Ignition Coil 2
16 Ignition Coil 1
17 Temperature Sensor (Gauge)
18 Double Sensor
19 Camshaft Position Sensor
20 Knock Sensor 1
21 Throttle Regulating Unit
22 Resonance Flap
23 Main Wiring Connector
2 4 ECU
25 ECU Engine Wiring Connector
26 ECU Engine Wiring Connector