immobilizer SSANGYONG MUSSO 1998 Workshop User Guide

9A-10 BODY WIRING SYSTEM
94 Seat Belt Switch (Driver)
95 Seat Belt Switch (Dirver)
96 Parking Brake Switch
97 Rear Cigarette Lighter
9 8 OVPR.................................................................Gasoline E/G
99 LH Side Repeater...............................................Rear Fog Lamp
100 Engine Wiring Connector
101 Engine Joint Connector
102 Engine Joint Connector......................................Gasoline E/G
103 ECS Engine Wiring Connector...........................Diesel E/G & Gasoline E/G with HFM ECU
104 ABD Engine Wiring Connector...........................ABD 5.0
105 ABD Engine Wiring Connector...........................ABD 5.0
105-1ABS Engine Wiring Connector............................ABS 5.0
106 Canister Purge Solenoid Valve...........................Gasoline E/G with MSE ECU
106-1Canister Purge Solenoid Valve...........................E20 & E23 Gasoline E/G with FHM ECU
107 Econo/Standard Solenoid Valve.........................Gasoline E/G with Automatic Transmission
108 CO Potentio Meter..............................................Gasoline E/G with HFM ECU & CO Potentio Meter
109 Front Wiper Motor
11 0 O
2 Sensor...........................................................E20 or E23 Gasoline E/G
111 RH Side Repeater
112 Engine Wiring Connector
113 Vertical Sensor
114 Lateral Sensor
115 Diagnosis
11 6 Joint Box.............................................................Gasoline E/G (E32)
117 Canister Purge Solenoid Valve...........................E32 Gasoline E/G with HFM ECU
118 Led Antenna......................................................Rolling code type Immobilizer
119 E-key Connector................................................Gasoline E/G with Rolling Code Type Immobilizer
120 Receiver Unit......................................................Gasoline E/G with Rolling Code Type Immobilizer
121 Receiver Unit......................................................Gasoline E/G with Rolling Code Type Immobilizer
122 Receiver Antenna..............................................Gasoline E/G with Rolling Code Type Immobilizer
123 Receiver Connector...........................................Gasoline E/G with Rolling Code Type Immobilizer
124 ICU Connector....................................................Gasoline E/G with Rolling Code Type Immobilizer
125 ICU .....................................................................Gasoline E/G with TOD (MSE ECU 3.2 Engine Only)
126 CAN Line............................................................Gasoline E/G with TOD (MSE ECU 3.2 Engine Only)
127 TOD ...................................................................Gasoline E/G with TOD (MSE ECU 3.2 Engine Only)
128 TOD ...................................................................Gasoline E/G with TOD (MSE ECU 3.2 Engine Only)
129 Transfer Case Speed Sensor.............................Gasoline E/G with TOD (MSE ECU 3.2 Engine Only)
130 Engine Main Wiring Connector...........................Gasoline E/G with MSE ECU
131 Remote Engine Start..........................................Diesel E/G with A/T & Black Out Lamp
132 Remote Engine Start..........................................Diesel E/G with A/T & Black Out Lamp
133 TCU ....................................................................Diesel E/G with BTRE A/T
134 TCU ....................................................................Diesel E/G with BTRE A/T
135 Ground 5............................................................Diesel E/G
136 Start Protection Relay.........................................Diesel E/G with Rolling Code Type Immobilizer
137 EGR control unit.................................................Diesel E/G
1 3 8 ICU 1..................................................................Diesel E/G with Rolling Code Type Immobilizer
1 3 9 ICU 2..................................................................Diesel E/G with Rolling Code Type Immobilizer
140 Injection Pump Valve Extension..........................Diesel E/G with Rolling Code Type Immobilizer
141 Injection Pump Valve Extension..........................Diesel E/G with Rolling Code Type Immobilizer
142 EGR Solenoid....................................................Diesel E/G
143 ICU led................................................................Diesel E/G with Rolling Code Type Immobilizer
144 Immobilizer Solenoid Valve..................................Diesel E/G with Crypto Type Immobilizer
147 Immobilizer Unit...................................................Diesel E/G with Crypto Type Immobilizer

SECTION 9W
IMMOBILIZER SYSTEM
Function Description . . . . . . . . . . . . . . . . . . 9W-2
System Description . . . . . . . . . . . . . . . . . . . . . 9W-3
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 9W-8
Gasoline Engine . . . . . . . . . . . . . . . . . . . . . . . 9W-8
Diesel Engine . . . . . . . . . . . . . . . . . . . . . . . . 9W-10
Schematic and Routing Diagrams . . . . . . . 9W-12
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 otherwise
noted.
Gasoline Engine (HFM) Immobilizer . . . . . . . 9W-12
Diesel Engine Immobilizer . . . . . . . . . . . . . . . 9W-13
Diesel Engine Immobilizer (Crypto Type) . . . . 9W-14
Maintenance and Repair . . . . . . . . . . . . . . 9W-15
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . . 9W-15
Immobilizer Antenna . . . . . . . . . . . . . . . . . . . 9W-15

9W-2 IMMOBILIZER SYSTEM
Notice
lIf vehicle is equipped with immobilizer system and the engine
cranks normally but not start, check immobilizer system first
rather than ignition and other electrical systems because it
can be disabled fuel supply of injectors by ECU due to
defective immobilizer system.
lProgramming of the immobilizer system will be performed
by authorized personnel only. If following defective codes
for immobilizer system appear during diagnosis of vehicle
with SCANNER, ask immobilizer programming to authorized
personnel and actual programming should be performed
by authorized personnel only.
Display of defectives relevant to immobilizer system :
SCANNER
1. No communication with transponder
2. No immobilizer programming
lThe transponder in the key can be damaged by shocks of
dropping or hitting other objectives, so handle it with care.
lEach supplied key has programming of code on its own.
Accordingly if ECU needs to be replaced, replace the
transponder in the key.
lThe vehicle equipped with immobilizer system will never be
started with remote ignition device, so do not attempt to
install it.
lThe immobilizer system will never be removed from the
vehicle. So never attempt to remove it to install a remote
ignition device or others.
lIf engine does not start during service, use every key to
start the engine and then check immobilizer system finally.
FUNCTION DESCRIPTION
Immobilizer is a device disabling vehicle ignition unless a speific key is used and designed to help prevent vehicle
theft.
Immobilizer is comprised of two devices, a key with encoded transponder and engine control unit(ECU) with the same
encoding of the transponder. When a key is inserted into the key hole to start vehicle and turned to ‘ON’, the ECU
reads and decodes the transponder code and, if the same, starts the engine, it is called immobilizer. It means
immobilizer system disables starting by stopping fuel supply if the code in the transponder does not match the code
stored in ECU each other.
Cases that requires immobilizer
programming
1. Replacement ECU
In this case, replace the every transponder
of the key at once.
2. Replacement of the transponder
3. Additional key for lost 1 or 2 keys
1 ) Clear all codes for current keys from the
ECU
2 ) When using current key : clear code of
the transponder and re-program it
3) Additional (purchased) key : perform
programming
4. When lost all keys
1 ) Clear all memorized key codes from the
ECU
2 ) Replace the key and key set
3 ) Immobilizer programming

IMMOBILIZER SYSTEM 9W-3
SYSTEM DESCRIPTION
Gasoline Version
The Immobilizer System consists of an electronic device with integrated coil, called ‘Active Antenna’, the crypto
transponder, which is integrated in the ignition key, and the engine management system (EMS).
The Active Antenna is mounted at the ignition lock and handles the following tasks :
lTo supply the transponder with power
lTo receive the data from the EMS and transmit it to the transponder
lTo receive and demodulate the data from the transponder and transmit it to the EMS
The whole Immobilizer software, the authentication and the management of valid keys is completely managed by the
EMS.
Immobilizer system for gasoline vehicle

IMMOBILIZER SYSTEM 9W-5
Diesel Version
The Immobilizer System consists of an electronic device with integrated coil, called ‘Active Antenna’, the crypto
transponder, which is integrated in the ignition key, and the Immobilizer-Control-Unit (ICU).
The Active Antenna is mounted at the ignition lock and handles the following tasks :
lto supply the transponder with power
lto receive the data from the ICU and transmit it to the transponder
lto receive and demodulate the data from the transponder and transmit it to the ICU
The whole Immobilizer software, the authentication and the management of valid keys and controlling the fuel valve
is managed completely by the ICU.
lConnector
- Immobilizer unit - Solenoid valve
16
815
714
613
512
411
310
29
1123
1 : Data out 3 : Data in 6 : Ground
7 : Data line 8 : K-Line 9 : IGN1 : IGN (Brown)
2 : Code (Green)
3 : Ground (Black)
l
Wire circuit diagram
Antenna
3
4
2
1Immo.
unit7
8Solenoid
valve 2
11
3
693
IGN
K-line (Diagnosis)
Solenoid Fuel Valve
Immobilizer System for Diesel Vehicles

9W-6 IMMOBILIZER SYSTEM

IMMOBILIZER SYSTEM 9W-7
System Integration
The med 98.2 immobilizer is an anti-theft protection device allowing the start of the engine only if a specific authorization
is obtained during the start up phase. The med 98.2 will allow (prohibit) the start of the engine by driving ON (OFF) an
internal solenoid valve.
The med 98.2 is a single unit integrating the following subsystem :
la valve that allows (valve open) or blocks (valve closed) the fuel flow through the engine fuel system
la microprocessor control system to control and activate the valve during the start up of the engine, in order to
allow the start up only when a specific permission is given
the med 98.2 task is, therefore, to prevent the non authorized start up of the engine.
The functional unit includes also a basic set of electronic components whose function is to reduce its dependence on
the microprocessor control system: a part from a short temporarily period, during the start up phase, the electronics
allows the control system to excite and open the valve, but it doesn’t allow to close it.
The valve can be shut off only after the KL 15 has been deactivated.
The structure allows to obtain the highest degree of safe-operation (functionality fail-start): a failure in the
microprocessor unit cannot cause the shut-off of the valve. The main consequence of this type of failure is to prevent
the next engine start up.
As a result of the above considerations, the med 98.2 immobilizer can realize its anti-theft functionality only in conjunction
with a control device: the ICU.
The ICU, when requested, sends a coded message to med 98.2 according to a settled communication protocol. The
med 98.2 will allow the start of the engine based upon this message.
In addition to the basic anti-theft functionality, the 98.2 immobilizer provides a number of diagnostic services when it
is connected to an external test instrument (SCAN-100). Those connections are depicted in the following integration
diagram (Fig. 1), where the dashed line indicates a temporary link for diagnostic purposes, and the shaded area the
med 98.2 system’s physical boundaries:
Fig. 1 - System Integration
Explanation of symbols:
med 98.2Immobilizer
ICU Immobilizer Control Unit
TESTER Device that can be connected for diagnostic purposes
K-LINESerial line for communication with ICU
KL15 Ignition key (Power supply for med 98.2)
GND Ground

9W-8 IMMOBILIZER SYSTEM
DefectsPossible cause Remedy
No communication with
transponder1. Defective wiring harness
- Power supply/Open/short of ground
- Open/short of signal terminal or
mis-conneting(between ECU
terminal No. 13 and 14)1. Connect/replace the wire correctly.
2.1 Replace the transponder
2.2 Immobilizer programming 2. Damaged transponder
3. Replace the antenna3. Defective antenna
4.1 Replace the ECU
4.2 Replace all transponder of the keys
4.3 Immobilizer programming 4. Defective ECU
No immobilizer
programming
(Components and
wiring harnesses are
normal but codes in
ECU and transponders
are not registered
normally)1. Replace the transponders and ECU
with new
; Immobilizer programming is not
performed1. Perform immobilizer programming
2. Replace transponders only(new)
; Immobilizer programming is not
performed2. Perform immobilizer programming
3. Replace ECU only(new) 3.1 Replace the transponders with new
3.2 Perform immobilizer programming
4. Replace the transponder only
; Programmed for other ECU4.1 Replace the transponders with new
4.2 Perform immobilizer programming
5. Re-programming is not performed
after clearing transponder code stored
in ECU that normally used system5. Immobilizer programming
Notice
1. Application of ex-programmed transponder into other ECUs.
; In this case, it can not be removed for the settled “lock bit” in transponder even though you perform immobilizer
problem normally. Moreover it is impossible to start engine, so replace the transponder with new and perform
immobilizer programming.
DIAGNOSIS
GASOLINE ENGINE
Cause and Remedy for Defective When Diagnosed by Scanner

IMMOBILIZER SYSTEM 9W-9
Check and Remedy when Engine Does not Start
Starter operates normally?
Ye s No
lCheck fuses (No. 8 and 27)
lCheck ECU and antenna power
ECU terminal
- No. 12 (Power)
- No. 11 (Ignition)
- No.5/10 (Ground)
lCheck battery voltage
lCheck battery wiring
lCheck signal wires between ECU
and antenna
- Immobilizer No.3 wire (0.5BY) =
ECU No. 14 pin (0.75BW)
:
Writing immobilizer code number
- Immobilizer No.4 wire (0.5Y) =
ECU No.13 pin (0.75Y)
: Reading immobilizer cod number
lCheck starter wires
lCheck TCU wires (only for 5-
speed automatic transmission)
lCheck starter and TCU
lECU No.2 pin : check normal
signal of the starter 1)
- Engine cranking voltage : 8-15V
lCheck engine speed sensor wires
and replace
lReplace immobilizer antenna
lReplace transponder and ECUNotice
1)
MSE ECU equipped vehicle is designed to
make fuel injection when the engine speed
for initial cranking is over 450rpm if there
are no start switch inputs in ECU No. 2 pin.
If transponder and ECU are replaced,
perform programming.

9W-10 IMMOBILIZER SYSTEM
1. Connect/replace the wire correctly
2. Replace the transponder
3.1 Replace the valve
3.2 Turn Ign sw on
3.3 Turn Ign sw OFF & ON
DefectsPossible cause Remedy
No communication with
transponder1. Defective wiring harness
- Power supply/Open/short of ground
- Open/short of signal terminal or
mis-conneting(between ICU
terminal No. 13 and 14)1. Connect/replace the wire correctly.
2.1 Replace the transponder
2.2 Immobilizer programming 2. Damaged transponder
3. Replace the antenna3. Defective antenna
4.1 Replace the ICU
4.2 Replace all transponder of the keys
4.3 Immobilizer programming 4. Defective ICU
No immobilizer
programming
(Components and
wiring harnesses are
normal but codes in
ICU and transponders
are not registered
normally)1. Replace the transponders and ICU
with new
; Immobilizer programming is not
performed1. Perform immobilizer programming
2. Replace transponders only(new)
; Immobilizer programming is not
performed2. Perform immobilizer programming
3. Replace ICU only(new) 3.1 Replace the transponders with new
3.2 Perform immobilizer programming
4. Replace the transponder only
; Programmed for other ICU4.1 Replace the transponders with new
4.2 Perform immobilizer programming
5. Re-programming is not performed
after clearing transponder code stored
in ICU that normally used system5. Immobilizer programming
Notice
1. Application of ex-programmed transponder into other ICUs.
; In this case, it can not be removed for the settled “lock bit” in transponder even though you perform immobilizer
problem normally. Moreover it is impossible to start engine, so replace the transponder with new and perform
immobilizer programming.
DIESEL ENGINE
Cause and Remedy for Defective When Diagnosed by Scanner
No communication with
valve1. Defective wiring harness
- Power supply/Open/short of ground
- Open/short of signal terminal or
mis-conneting(between ICU
terminal No. 13 and 14)
2. Defective ICU
3. Defective valve