Ignition DAEWOO MATIZ 2003 Service Repair Manual

DAEWOO M-150 BL2
SECTION 9L
GLASS AND MIRRORS
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 B unless otherwise
noted.
TABLE OF CONTENTS
Description and System Operation 9L-2. . . . . . . . . .
Stationary Glass 9L-2. . . . . . . . . . . . . . . . . . . . . . . . . .
Inside Rearview Mirror 9L-2. . . . . . . . . . . . . . . . . . . . .
Outside Rearview Mirrors 9L-2. . . . . . . . . . . . . . . . . . .
Components Locator 9L-3. . . . . . . . . . . . . . . . . . . . . . .
Glass and Mirror 9L-3. . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Information and Procedures 9L-4. . . . .
Testing Rear Window Defogger Grid Line 9L-4. . . . .
Repair Instructions 9L-5. . . . . . . . . . . . . . . . . . . . . . . . .
On-Vehicle Service 9L-5. . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield 9L-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Window Glass 9L-7. . . . . . . . . . . . . . . . . . . . . . .
Rear Window Defogger Grid Line Repair 9L-9. . . . . Rear Window Defogger Braided Lead
Wire Repair 9L-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Door Glass 9L-10. . . . . . . . . . . . . . . . . . . . . . . . .
Front Door Quarter Glass 9L-12. . . . . . . . . . . . . . . . .
Rear Door Glass 9L-13. . . . . . . . . . . . . . . . . . . . . . . . .
Inside Rearview Mirror 9L-13. . . . . . . . . . . . . . . . . . . .
Outside Rearview Mirror (Manual) 9L-14. . . . . . . . . .
Outside Rearview Mirror (Cable) 9L-15. . . . . . . . . . . .
Outside Rearview Mirror (Electric) 9L-16. . . . . . . . . .
Special Tools and Equipment 9L-17. . . . . . . . . . . . . .
Special Tools Table 9L-17. . . . . . . . . . . . . . . . . . . . . . .
Schematic and Routing Diagrams 9L-18. . . . . . . . . .
Rear Window Defogger 9L-18. . . . . . . . . . . . . . . . . . .

9L –4 GLASS AND MIRRORS
DAEWOO M-150 BL2
DIAGNOSTIC INFORMATION AND PROCEDURES
TESTING REAR WINDOW DEFOGGER GRID LINE
D109E301
If it has been observed during use that a grid line is inop-
erative, the following procedure can be used to find the
break. If none of the grid lines is operating, a full system
diagnosis should be completed before attempting to re-
pair the grid lines.
1. Turn the ignition ON.
2. Turn on the rear window defogger.
Notice: Use care when touching the voltmeter terminals
to a grid line. If the terminals are roughly applied, the grid
line may be scratched, resulting in an open circuit.
3. From the inside of the vehicle, connect a voltmeter to
each end of a grid line. The voltmeter will indicate bat-
tery voltage if the grid line is open.
4. If a grid line is found to be open, move a voltmeter ter-
minal from one side of the grid line and retest at apoint nearer to the other side of the window. Continue
to retest, each time bringing one of the voltmeter ter-
minals closer to the opposite side of the window from
where it was originally connected. The break in the
grid line is at the point where the voltmeter begins
reading 0 volts instead of battery voltage.
5. Use a marking crayon to lightly mark the break point
on the rear window. Mark the glass instead of mark-
ing directly on the grid line, and make the mark far
enough from the grid line so that the mark can easily
be removed without disturbing the repair.
6. Use a grid line repair kit to fix the break in the grid line.
Refer to “Rear Window Defogger Grid Line Repair” in
this section.

DAEWOO M-150 BL2
SECTION 9P
DOORS
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 B unless otherwise
noted.
TABLE OF CONTENTS
Description and Operation 9P-2. . . . . . . . . . . . . . . . . .
Door Lock Striker 9P-2. . . . . . . . . . . . . . . . . . . . . . . . . .
Childproof Rear Door Lock 9P-2. . . . . . . . . . . . . . . . . .
Power Door Locks 9P-2. . . . . . . . . . . . . . . . . . . . . . . . .
Power Windows 9P-2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate Strut 9P-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Locator 9P-3. . . . . . . . . . . . . . . . . . . . . . . .
Front Door 9P-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Door 9P-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair Instructions 9P-7. . . . . . . . . . . . . . . . . . . . . . . . .
On-Vehicle Service 9P-7. . . . . . . . . . . . . . . . . . . . . . . . . .
Front Door Glass Run 9P-7. . . . . . . . . . . . . . . . . . . . . .
Rear Door Glass Run 9P-8. . . . . . . . . . . . . . . . . . . . . .
Door Lock Striker 9P-9. . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate Lock Striker 9P-9. . . . . . . . . . . . . . . . . . . . . . .
Door Lock Striker Adjustment 9P-10. . . . . . . . . . . . . .
Tailgate Lock Striker Adjustment 9P-11. . . . . . . . . . . .
Front Door Lock 9P-13. . . . . . . . . . . . . . . . . . . . . . . . . .
Childproof Rear Door Lock 9P-14. . . . . . . . . . . . . . . . .
Central Door Lock Actuator 9P-16. . . . . . . . . . . . . . . .
Tailgate Lock 9P-16. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside Door Handle 9P-17. . . . . . . . . . . . . . . . . . . . . . . Outside Front Door Handle 9P-17. . . . . . . . . . . . . . . .
Outside Rear Door Handle 9P-18. . . . . . . . . . . . . . . . .
Door Lock Cylinder 9P-18. . . . . . . . . . . . . . . . . . . . . . .
Manual Window Regulator 9P-19. . . . . . . . . . . . . . . . .
Power Front Window Regulator 9P-19. . . . . . . . . . . .
Front Door Assembly 9P-20. . . . . . . . . . . . . . . . . . . . .
Rear Door Assembly 9P-21. . . . . . . . . . . . . . . . . . . . . .
Tailgate 9P-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate Lock Cylinder 9P-23. . . . . . . . . . . . . . . . . . . . .
Door Hinge 9P-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Hold Open Link 9P-24. . . . . . . . . . . . . . . . . . . . .
Inside Channel Weatherstrip (Standard) 9P-24. . . . .
Inside Channel Weatherstrip (Deluxe) 9P-25. . . . . . .
Door Outside Channel Weatherstrip 9P-25. . . . . . . . .
Door Weatherstrip 9P-26. . . . . . . . . . . . . . . . . . . . . . . .
Door Seal Trim 9P-27. . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Opening Weatherstrip 9P-27. . . . . . . . . . . . . . . .
Manual Window Regulator Handle 9P-28. . . . . . . . . .
Tailgate Strut 9P-28. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Schematic and Routing Diagrams 9P-30. . . . . . . . . .
Power Door Locks 9P-30. . . . . . . . . . . . . . . . . . . . . . . .
Power Windows (Front Only) 9P-34. . . . . . . . . . . . . . .

REMOTE KEYLESS ENTRY AND ANTI-THEFT SYSTEM 9T – 1
DAEWOO M-150 BL2
SECTION 9T
REMOTE KEYLESS ENTRY AND
ANTI-THEFT SYSTEM
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.
TABLE OF CONTENTS
Description and Operation 9T-2. . . . . . . . . . . . . . . . . .
Remote Keyless Entry and
Anti-Theft System 9T-2. . . . . . . . . . . . . . . . . . . . . . .
Remote Locking and Unlocking 9T-2. . . . . . . . . . . . . .
Security Indicator 9T-2. . . . . . . . . . . . . . . . . . . . . . . . . .
Intrusion Sensing 9T-2. . . . . . . . . . . . . . . . . . . . . . . . . .
Siren 9T-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle Locator 9T-2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Autolocking (Safety Lock) 9T-3. . . . . . . . . . . . . . . . . .
Control Module/Receiver 9T-3. . . . . . . . . . . . . . . . . . . Repair Instructions 9T-4. . . . . . . . . . . . . . . . . . . . . . . . .
On-Vehicle Service 9T-4. . . . . . . . . . . . . . . . . . . . . . . . . .
Siren 9T-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Password Programming 9T-5. . . . . . . . . . . . . . . . . . . .
Specifications 9T-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fastener Tightening Specifications 9T-6. . . . . . . . . . .
Schematic and Routing Diagrams 9T-7. . . . . . . . . . .
Remote Keyless Entry and
Anti-Theft System 9T-7. . . . . . . . . . . . . . . . . . . . . . .

9T–2 REMOTE KEYLESS ENTRY AND ANTI-THEFT SYSTEM
DAEWOO M-150 BL2
DESCRIPTION AND OPERATION
REMOTE KEYLESS ENTRY AND
ANTI-THEFT SYSTEM
The remote keyless entry and anti-theft system can per-
form the following functions:

Remotely lock and unlock the vehicle doors with a
hand-held high-frequency transmitter.

Sense intrusion into the vehicle through the doors,
the tailgate, or the hood.

Activate a warning to signal an intrusion.

Help the driver find the vehicle in a parking area.

Automatically re-lock the doors if a door or the trunk is
not opened within 30 seconds after the vehicle has
been unlocked by the remote keyless entry.

Communicate serial data to a scan tool to help diag-
nose system faults.
The remote keyless entry and anti-theft system consists
of the following components:

Keyless entry and anti-theft control module/receiver.

Security indicator.

Tailgate open switch.

Door open switches.

Central locking unit.

Flashing turn signal lamps.

Siren.

Hood open switch.
REMOTE LOCKING AND UNLOCKING
The hand-held transmitter locks and unlocks the vehicle
doors by sending radio waves to the control module/re-
ceiver in the vehicle. The effective range of the transmit-
ter varies between 5 and 10 meters (approximately 16 to
32 feet), depending on whether or not objects such as
other vehicles are blocking the path of the radio waves.
The transmitter has a LOCK button and an UNLOCK
button which only function when the ignition is OFF.
Pressing the UNLOCK button has the following effects:

The doors are unlocked.

The turn signal lamps flash twice.

The control module is disarmed.
Pressing the LOCK button has the following effects:

The doors are locked.

The turn signal lamps flash once.

The control module is armed.
The transmitter has a replaceable battery. The battery is
designed to last at least two years before replacement is
necessary.
SECURITY INDICATOR
There is a security indicator on the instrument panel. Af-
ter the LOCK button of the transmitter is pressed, the
module is placed in the armed mode, and the security
indicator flashes. The security indicator turns ON for 1/8
second and OFF for 7/8 second. It then flashes at that
frequency until the control module/receiver is disarmed.
INTRUSION SENSING
The anti-theft function is armed if the transmitter sends
the LOCK message to the control module/receiver when
the ignition is OFF.
When the hood, the door, or the tailgate is opened, the
hood open switch, the door open switch, or the tailgate
open switch will change its input to ground. The alarm
will be activated if the hood open sensor, the door open
sensor, or the tailgate open sensor changes its input to
ground before either of the following conditions occurs:

An UNLOCK message is received from the transmit-
ter.
SIREN
The remote keyless entry system is armed when the
LOCK message is received from the transmitter when
the ignition is OFF. When the system is armed, it will ac-
tivate the siren and flash the turn signals for 28 seconds
if any of the following conditions occurs:

A door is opened (front door open switch input is
changed to ground).

The tailgate is opened (tailgate open switch input is
changed to ground).

The hood is opened while the anti-theft system is
armed (hood open switch input is changed to
ground).
The siren is disarmed when any of the following condi-
tions occurs:

The ignition switch is turned ON with the key.

The UNLOCK button or the LOCK button on the re-
mote transmitter is pressed.
VEHICLE LOCATOR
The remote keyless entry system assists the driver in lo-
cating the vehicle. When the vehicle is unlocked with the
remote control, the turn signals flash twice to indicate
the location of the vehicle. The duration of the flashes
and the length of time between flashes is used to indi-
cate certain vehicle conditions. Refer to “Fault or Alarm
Indication” in this section.

REMOTE KEYLESS ENTRY AND ANTI-THEFT SYSTEM 9T–3
DAEWOO M-150 BL2
AUTOLOCKING (SAFETY LOCK)
The remote keyless entry system features an autolock-
ing control. If the doors are unlocked with the remote
transmitter when the control module/receiver is in the
armed mode, the doors are automatically re-locked after
30 seconds unless any of the following events occur:

The door is opened.

The ignition switch is turned ON.

The tailgate is opened.

The hood is opened.
CONTROL MODULE/RECEIVER
The remote keyless entry control module/receiver is
contained in the tie-bar center. The module/receiver pro-
cesses signals from the remote transmitter and the in-
trusion sensors, and it activates the alarm if an intrusion
is detected.
The control module/receiver will not communicate with
transmitters from other vehicles because there are over
four billion possible electronic password combinations,
and passwords are not duplicated. The control module/
receiver has an attached antenna to detect signals from
the transmitter.

IMMOBILIZER ANTI-THEFT SYSTEM 9T – 9
DAEWOO M–150 BL2

SECTION 9T
IMMOBILIZER ANTI-THEFT SYSTEM
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.
TABLE OF CONTENTS
Description and Operation 9T-10. . . . . . . . . . . . . . . . .
Immobilizer System 9T-10. . . . . . . . . . . . . . . . . . . . . . .
Electronically Coded Keys 9T-10. . . . . . . . . . . . . . . . .
Detection Coil 9T-10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Immobilizer Control Unit 9T-10. . . . . . . . . . . . . . . . . . .
Serial Data Link 9T-11. . . . . . . . . . . . . . . . . . . . . . . . . .
Electronic Control Module (ECM) 9T-11. . . . . . . . . . .
Security Indicator 9T-12. . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Information and Procedures 9T-13. . . .
Immobilizer System (FENIX 5MR) 9T-13. . . . . . . . . .
Immobilizer System (SIRIUS D3) 9T-13. . . . . . . . . . .
DTC 1600 ECM Immobilizer Error
(No Answer) 9T-14. . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 1601 ECM Immobilizer Error
(Incorrect Answer) 9T-16. . . . . . . . . . . . . . . . . . . . . .
DTC 1602 ECM Immobilizer Error
(ECM Locked) 9T-18. . . . . . . . . . . . . . . . . . . . . . . . .
P1628 ECM Immobilizer Error 9T-20. . . . . . . . . . . . . .
P1629 ECM Immobilizer Error 9T-22. . . . . . . . . . . . . . Key Status Errors (FENIX 5MR) 9T-24. . . . . . . . . . . .
Key Status Errors (SIRIUS D3) 9T-24. . . . . . . . . . . . .
Communication Between Immobilizer and
Test Equipment (FENIX 5MR) 9T-25. . . . . . . . . . . .
Communication Between Immobilizer and
Test Equipment (SIRIUS D3) 9T-25. . . . . . . . . . . . .
Repair Instructions 9T-26. . . . . . . . . . . . . . . . . . . . . . . .
On-Vehicle Service 9T-26. . . . . . . . . . . . . . . . . . . . . . . . .
Key Coding Procedure 9T-26. . . . . . . . . . . . . . . . . . . .
ID Code Reprogramming 9T-26. . . . . . . . . . . . . . . . . .
Transponder 9T-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Detection Coil 9T-27. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Immobilizer Control Unit 9T-28. . . . . . . . . . . . . . . . . . .
Specifications 9T-30. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fastener Tightening Specifications 9T-30. . . . . . . . . .
Schematic and Routing Diagrams 9T-31. . . . . . . . . .
Immobilizer Anti-Theft System 9T-31. . . . . . . . . . . . .
Remote Keyless Entry and Immobilizer
Anti-theft System 9T-32. . . . . . . . . . . . . . . . . . . . . . .

9T–10 IMMOBILIZER ANTI-THEFT SYSTEM
DAEWOO M–150 BL2
DESCRIPTION AND OPERATION
IMMOBILIZER SYSTEM
The purpose of the Immobilizer system is to provide
additional theft deterrence to the vehicle in which it is
installed and to prevent it from being stolen or driven by
unauthorized users.
The verification of the user authorization is done by an
ignition key with integrated transponder.
The external LED displays the Immobilizer status and
has an additional theft deterrence function.
To secure the communication, the status is exchanged
between the Immobilizer and the ECM in a 5 byte of en-
coded data.
These 5 bytes are composed by a mixture of random
data and two types of fixed code

a vehicle model identification number : MIN

a vehicle specific identification : VIN
The MIN is known from the first supply of the system.
The VIN is realized by ICU on the special order from the
key coding (reading of transponder code and storing it
as valid key code in Immobilizer EEPROM).
A different random data is computed at each key transi-
tion.
All the immobilization communication between the ECM
and ICU is made on K-line (K line : Serial data line ’7’).
Due to the learning of the Vehicle specific identification
Number, both ICU and ECM can stay in 3 stable modes

Virgin mode (VIN not learnt)

Learnt mode (VIN learnt)

Neutral mode (for a new VIN learning)
In case of using valid key, the release message commu-
nication with the ECM take place and the LED displays
the Immobilizer status valid key In case of using invalid
key, the ECM disables the fuel injector circuit with coded
intervention and sets DTC(Diagnostic Trouble Code)
The above conditions are maintained until the ignition is
switched off.
An ECM without an immobilizer control unit cannot be
interchanged for an ECM that is used with an immobiliz-
er control unit system. The Immobilizer control unit and
ECM must have a matching ID code. ID coding and key
coding are accomplished by using Scanner–100
The Immobilizer system consists of

a maximum or 5 ignition keys with integrated trans-
ponder

the toroidal coil (Detection coil) for energizing and
reading the transponder mounted at the ignition lock.

the Immobilizer control unit(ICU) with :
– power supply
– ignition input circuit
– transponder modulation and demodulation unit – EEPROM
– driver electronic for the external status LED
– serial data link hardware

the external status LED for displaying the Immobilizer
status

the serial data link between Immobilizer and ECM
ELECTRONICALLY CODED KEYS
Each valid ignition key has an internal transponder
which is a read /write transponder.
The transponder contains an implementation of a cryp-
to-algorithm with 96 bits of user configurable s cret-key
contained in EEPROM and transmits data to the ICU by
modulating the amplitude of the ele tromagnetic field,
and receives data and commands in a similar way.
DETECTION COIL
The toroidal coil is mounted at the ignition lock in front of
the key barrel.
It is connected to the ICU with a four terminal connector
fixed at the body of the coil.
The length of the connection between coil and Immobi-
lizer is restricted to 50cm. The correct placement on the
ignition lock and the exact electrical data is very impor-
tant for the reading distance of transponder.
The toroidal coil and receiving coil inside the transpond-
er built a transformer. During the readingprocess the coil
induces energy into the transponder. The transponder
charges the field and generates an amplitude modulated
signal with the manchester coded data. This charge of
the field is demodulated inside the Immobilizer.
The Immobilizer contains the coil driver hardware for di-
rect connection of the toroidal coil.
IMMOBILIZER CONTROL UNIT
The function of the Immobilizer System is shared be-
tween the ICU and the ECM.
The task of the Immobilizer Electronic Control unit (ICU)
are:

Reading of the input information “ignition ON/OFF”

Controlling the states LED

Controlling the transponder read/write process (mod-
ulation, demodulation, decoding, comparison of the
read code with the code of the valid keys).

Communication with the ECM after ignition ON (re-
ceiving of the ECM-request and transmission of re-
lease message).

Special functions for calculation and handling of the
VIN-code.

IMMOBILIZER ANTI-THEFT SYSTEM 9T–11
DAEWOO M–150 BL2
The VIN code is calculated by the Immobilizer using a
random generator.
The VIN code is transmitted from the Immobilizer in the
release message communication only incase of using
an authorized key. Without an authorized key it is not
possible to getthe system VIN code.In case of ECM in-
ternal state is in Virgin mode or neutral mode the ECM
learns the system VIN code automatically after receiving
the first release response message.
To get a synchronized Immobilizer system (same VIN-
code in Immobilizer and ECM,authorized key) the DLC
test equipment has to be used for authorization of the
keys(first key coding). The usage of this test equipment
is restricted to authorized persons.

Communication with the DLC-test equipment. Main
functions are the key coding procedure, the VIN-code
handling and the support for system test functions.

Handling of the software watchdog
Operation
In the active mode of immobilizer (engine OFF, IG key
OFF) the status LED is blinking as mode A. When igni-
tion is turned ON, the system wakes up and tries to read
out the transponder.
In case of the detection of a valid key , The release mes-
sage communication with the ECM takes place. The sta-
tus LED displays the Immobilizer state “valid key”.
After turning off the ignition(ignition OFF detection simi-
lar to the ECM ignition OFF detection), the Immobilizer
changes to the active mode. The status LED is blinking
as Mode A.
Data Link Connector (DLC) Mode
When the ignition is on, a scan tool can switch the immo-
bilizer control unit to the DLC mode for diagnostics, key
coding and ID coding.

The status LED is turned off during DLC-mode

The Immobilizer will answer all correct messages,
which are defined as Immobilizer messages.
ID Code Handling
One of 65,535 VIN codes is stored in the immobilizer
EEPROM.
The VIN code can be erased by using “Reset VIN code”
command of the scan tool.
When the immobilizer control unit calculates a new VIN
code, ECM VIN code should be reset to get identical
with the immobilizer control unit’s.
During diagnostic procedures, the VIN code can be read
for comparison with the ECM VIN code by using the
scan tool’s “Read immobilizer control unit VIN code”
command.
SERIAL DATA LINK
Serial data can be exchanged between a scan tool and
the ECM and the Immobilizer control unit. The scan tool
connection is the data link connector (DLC).
ELECTRONIC CONTROL MOUDLE
(ECM)

ECM in Virgin mode
In this mode, the ECM knows only the model vehicle
identifier code.
The engine can be locked/unlocked.
ECM requests to ICU the VIN number. As soon as the
ECM receives two correct consecutive communica-
tion frames with the same VIN code the ECM learns
it.
The VIN code will be stored in non-volatile memory at
the end of power latch phase. ECM enters in Learnt
mode.

ECM in Learnt mode
In such a state, ECM checks on every communica-
tion, the correct encoding of the ICU.
If the code received is not correct, then the vehicle is
immobilized.
The coded 5 bytes of data emitted by ECM are a mix-
ture of MIN code and random.
The coded 5 bytes of data emitted by ICU are a mix-
ture of VIN code and random.

ECM in Neutral mode
This mode is a special intermediate mode, used for
ICU replacement or immobilizer option installation.
ECM request to ICU the VIN number. As soon as the
ECM receives two correct consecutive communica-
tion frames with the same VIN code the ECM learns
it. The VIN code will be stored in non-volatile memory
at the end of power latch phase. ECM enters in
Learnt mode.

After turning on the ignition the ECM will control the
engine in a normal way for starting and running while
waiting for a valid release response message from
the Immobilizer.
1. After receiving a response message including the in-
formation “ICU in learnt mode” and the correct sys-
tem VIN-code
→ the ECM enters the release state, which allows to
continue the running of the engine.
2. After receiving a response message including the in-
formation “ICU in learnt mode” and a wrong system
VIN-code
→ the ECM does not send a new request and enters
the blocked state, which causes the activation of the
immobilization actions of the engine.

9T–12 IMMOBILIZER ANTI-THEFT SYSTEM
DAEWOO M–150 BL2
3. If the ECM doesn’t receive a response message with-
in a defined time from beginning of the release time
period or the ECM receives a no release answer
→ the ECM enters the blocked state, which causes the
activation of the immobilization actions of the engine.

The inactive state of the Immobilizer (valid key/invalid
key) ends with turning off the ignition.
SECURITY INDICATOR
There is a security indicator on the instrument panel.
Status LED
An external LED displays the immobilizer system status.
The immobilizer contains the LED driver hardware for di-
rect connection of one LED.
Status LED Modes
Status
LEDImmobilizer
System StatusNote
BlinkingActive– Ignition OFF
BlinkingActive– Invalid key
detected
– Ignition ON
OFFInactive– Valid key detected
– Ignition ON
BlinkingActive– VIN-code is
different between
ICU and ECM in
learnt state
– Ignition ON
ONActive– Transponder
reading error
– Ignition ON
BlinkingActive– Reader exciter
ASIC error
– Ignition OFF