1998 SSANGYONG MUSSO Workshop Repair Manual

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

IMMOBILIZER SYSTEM 9W-11
Check and Remedy when Engine Does not Start
Starter operates normally?
Ye s No
lCheck fuses (No. 19)
lCheck ECU and antenna power
and solenoid valve
ECU terminal
- No. 9 (Ignition)
- No. 6 (Ground)
lCheck battery voltage
lCheck battery wiring
lCheck signal wires between ICU
and antenna
- Immobilizer No.3 wire (0.5Y) =
ICU No. 1 pin (0.75BW)
:
Writing immobilizer code number
- Immobilizer No.4 wire (0.5G) =
ECU No.3 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 antennaNotice
2)
New valve is possible coded either with a
new ICU or an already used ICU. But old
coded valve is only possible coded with a
new ICU.
If transponder and ICU are replaced,
perform programming.
lReplace transponder and ICUlReplace the valve
1. Turn Ign sw ON
2. Turn Ign sw OFF & ON
(To learn the valve correctly it is necessary
to switch on Ignition twice for at least 5
seconds.)2)

9W-12 IMMOBILIZER SYSTEM
SCHEMATIC AND ROUTING DIAGRAMS
GASOLINE ENGINE (HFM) IMMOBILIZER

IMMOBILIZER SYSTEM 9W-13
DIESEL ENGINE IMMOBILIZER

9W-14 IMMOBILIZER SYSTEM
DIESEL ENGINE IMMOBILIZER - CRYPTO TYPE

IMMOBILIZER SYSTEM 9W-15
Notice
For circuit diagram of gasoline vehicle, refer to the ECU diagram.
IMMOBILIZER ANTENNA
Immobilizer antenna is installed in key set outer surface (it is
installed in the location of key hall illumination).(see the figure)
1 Immobilizer Antenna
2 Key
3 Transponder
MAINTENANCE AND REPAIR
ON-VEHICLE SERVICE

9W-16 IMMOBILIZER SYSTEM
4. Remove the transponder. Carefully remove the old shock
absorbing sealant with a razor blade if applied.
5. Replace the transponder with new one, and apply the small
amount of shock absorbing sealant.
6. Installation should follow the removal procedure in the
reverse order.
1 Transponder
Replacement Procedure
1. Open the cover on key handle.
2. Remove the small screw in symmetrical position of key
illumination.
3. Remove the cover.