Downloaded from www.Manualslib.com manuals search engine GWFLORID Maintenance Manual186
Immobilizer System
Immobilizer system composition
This vehicle's engine immobilizer system consists of a theft deterrent ECU assembly, a theft deterrent coil as-
sembly, and two theft deterrent converter assemblies. The theft deterrent coil assembly is put on the head of
ignition lock cylinder, with the other end connected to the theft deterrent ECU assembly. The two theft deterrent
converter assemblies are separately installed inside the plastic handles\
of the two keys.
1. Position diagram
All the components of immobilizer system are assembled on the overall vehicle except for the theft deterrent
converter assemblies inside the keys. They achieve communication functions via the wire harness connections.
The following figure shows the position of each component in the overall\
vehicle.
Theft deterrent controller
Ignition lock key
Theft deterrent coil
Steering column
2. Theft deterrent controller
The theft deterrent controller assembly mainly consists of a microprocessor and peripheral components. It com-
municates with the password transmitter assembly and engine ECU. The theft deterrent controller assembly
communicates with the engine ECU via the W wire, while communicating with the theft deterrent transponder
assembly via radio frequency. The theft deterrent controller connects with the scanner via the K wire. Through
the scanner, it can initiate matching, state controlling, and malfunction diagnosti\
c on the immobilizer system.
3. Theft deterrent coil
The theft deterrent coil assembly is installed on the ignition lock cylinder, the other end of wire harness
plug is connected to the theft deterrent controller assembly. The theft deterrent coil assembly can generate
an electromagnetic field to achieve communication between the theft deterrent controller assembly and the
password transmitter assembly.
4. Transponder
The theft deterrent transponder is installed inside the key handle. It has no power supply, maintains a small size,
and long use life. It acquires electric energy and transmission signals using the stimulation of the electromagnetic
field generated by the theft deterrent coil, so as to communicate with t\
he theft deterrent controller assembly.
Downloaded from www.Manualslib.com manuals search engine 217Airbags
Malfunction judgment
1. Malfunction record (trouble code storage)
After the ECU performs the diagnostic test cycle in order to verify a malfunction, the SRS-ECU will store the
relevant code, the initial detection time, the final detection time, and the number of times it occurred in the
EEPROM.
The SRS-ECU can store 16 codes at most.
2. SRS-ECU approved trouble codes
No.Malfunction introductionType codeTrouble
code
Possible
removal
1(Front passenger side preload seat belt), connected to the
power supply03H01HRemovable
2(Driver side front row preload seat belt), connected to the
power supply03H02HRemovable
3(Driver side airbag assembly), connected to the power
supply03H03HRemovable
4(Front passenger side airbag assembly), connected to the
power supply03H04HRemovable
5(Front passenger side seat preload seat belt), grounded02H01HRemovable
6(Driver side front row preload seat belt), grounded02H02HRemovable
7(Driver side airbag assembly), grounded02H03HRemovable
8(Front passenger side airbag assembly), grounded02H04HRemovable
9(Front passenger side preload seat belt), resistance too
high or open circuit01H01HRemovable
10(Driver side front row preload seat belt), resistance too
high or open circuit01H02HRemovable
11(Driver side airbag assembly), resistance too high or open
circuit01H03HRemovable
12(Front passenger side airbag assembly), resistance too
high or open circuit01H04HRemovable
13(Front passenger side preload seat belt), resistance too
low or short circuit0CH01HRemovable
14(Driver side preload seat belt), resistance too low or short
circuit0CH02HRemovable
15(Driver side airbag assembly), resistance too low or short
circuit0CH03HRemovable
16(Front passenger side airbag assembly), resistance too
low or short circuit0CH04HRemovable
17Power supply voltage is out of range (high voltage or low
voltage)12H42HRemovable
18Power cord contact dysfunctional11H42HRemovable
19Warning lamp fault - connected to the power supply or
bulb is short circuited03H40HRemovable
20Warning lamp fault - grounded or open circuit in filament02H41HRemovable
21Configuration error06H44HRemovable
22
Internal malfunction0DH>80HIrremovable
Replace
airbag ECU
Trouble code transmission is completed the SRS-ECU outputs through the maintenance program's
serial data interface to the specified diagnostic instrument (X-431 dia\
gnostic scanner).
3. Internal malfunction
The microcontroller can detect the following items not only when starting up detection, but also during the
diagnostic detection cycle.
(a) The ignition circuit triggers the transistor: The high-end transistor will be detected not only when starting up
