2003 DAEWOO MATIZ Service Repair Manual

IMMOBILIZER ANTI-THEFT SYSTEM 9T–25
DAEWOO M–150 BL2
COMMUNICATION BETWEEN
IMMOBILIZER CONTROL UNIT AND
TEST EQUIPMENT (FENIX 5MR)
1. Connect the test equipment as described in the Scan
Tool Equipment Manual.
2. If communication between the scan tool and the test
equipment was unsuccessful, wait 30 seconds and
try again.
3. If communication was not successful on the second
try, turn the ignition OFF and check the wire and con-
nectors between the immobilizer control unit termi-
nal 10 (17) and the data link connector (DLC) terminal
M.
4. If the wire and connectors between the DLC and the
immobilizer control unit are okay, replace the immobi-
lizer control unit. Refer to “Immobilizer Control Unit” in
this section.
Notice: Install the resistor cover in the DLC connec-
tor after remove the scan tool. Because ECM Immo-
bilizer Error Problem may exist.
COMMUNICATION BETWEEN
IMMOBILIZER CONTROL UNIT AND
TEST EQUIPMENT (SIRIUS D3)
1. Connect the test equipment as described in the Scan
Tool Equipment Manual.
2. If communication between the scan tool and the test
equipment was unsuccessful, wait 30 seconds and
try again.
3. If communication was not successful on the second
try, turn the ignition OFF and check the wire and con-
nectors between the immobilizer control unit termi-
nal 10 and the data link connector (DLC) terminal 7
(8).
4. If the wire and connectors between the DLC and the
immobilizer control unit are okay, replace the immobi-
lizer control unit. Refer to “Immobilizer Control Unit” in
this section.

9T–26 IMMOBILIZER ANTI-THEFT SYSTEM
DAEWOO M–150 BL2
REPAIR INSTRUCTIONS
ON-VEHICLE SERVICE
KEY CODING PROCEDURE
1. Install the immobilizer control unit cartridge in the
scan tool.
2. Turn the ignition OFF
3. Connect the scan tool.
4. Turn the ignition ON with the key to be coded.
5. Enter the four-digit password that enables service
personnel to use the scan tool for coding keys.
6. A lost key can be deleted only by deleting all keys
and reauthorizing the remaining keys as new keys.
If a key is lost, go to the next step. If no keys have
been lost but an additional key is desired, go to Step
8.
7. Use the scan tool command DELETE ALL KEY
CODES.
8. Use the scan tool command AUTHORIZE ONE
ADDITIONAL KEY.
9. Repeat Steps 4, 5, and 6 until the immobilizer con-
trol unit has recorded all of the new keys or, after a
deletion, has reauthorized all of the remaining keys.
The immobilizer control unit can record a maximum
of five keys.
10. Return the system to the normal mode.
11. Turn OFF the ignition.
12. Turn ON the ignition.
13. Crank to start the engine.
ID CODE REPROGRAMMING
Reprogram the identification (ID) code in the following
situations:

An immobilizer control unit has been replaced.

An electronic control module (ECM) has been re-
placed.
If a valid key has been lost, refer to “Key Coding Proce-
dure” in this section.
Reprogramming Procedure
1. Turn the ignition OFF. Reprogramming is not allowed
while the engine is running.
2. Insert the immobilizer control unit cartridge into the
scan tool.
3. Do not start the vehicle, but turn the ignition ON.
4. Enter the four-digit password that enables service
personnel to use the scan tool for ID code reprogram-
ming.
5. Use the scan tool to command RESET ID CODE.

IMMOBILIZER ANTI-THEFT SYSTEM 9T–27
DAEWOO M–150 BL2
6. Turn the ignition OFF and ON again, but do not
crank or start the engine. The ECM will reset the
ECM ID code to match the new ID code that was
calculated and sent by the immobilizer control unit
when the ignition was first turned ON after the reset
command.
7. Return the system to the normal mode.
8. Turn OFF the ignition.
9. Turn ON the ignition.
10. Start the engine.
After reprogramming the ID code, the scan tool SYS-
TEM DIAGNOSIS command can verify that the ECM ID
code matches the immobilizer control unit ID code.
If the reprogramming procedure does not result in
matching ID codes, check the electrical connectors for
the serial data wire between the immobilizer control unit
and the ECM.
TRANSPONDER
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 secret-key
contained in EEPROM and transmits data to the ICU by
modulating the amplitude of the electromagnetic field,
and receives data and commands in a similar way.
D105A504
DETECTION COIL
(Left–Hand Drive Shown, Right–Hand
Drive Similar)
Removal Procedure
1. Remove the steering column covers. Refer to Section
6E, Steering Wheel and Column.
D29T001
2. Remove the detection coil.

Disconnect the two-pin connector from the detec-
tion coil (1).

Pry the detection coil away from the lock cylinder
(2).
Important: If the detection coil will be replaced with a
new one, it does not matter if the key position trim ring is
damaged during removal. A new trim ring is part of the
new detection coil.

9T–28 IMMOBILIZER ANTI-THEFT SYSTEM
DAEWOO M–150 BL2
D29T002
Installation Procedure
1. Install the detection coil by pressing it onto the lock
cylinder until it snaps in place.
2. Connect the two-pin connector to the immobilizer.
D105A505
3. Install the steering column covers with the screws.
Refer to Section 6E, Steering Wheel and Column.
D105A504
IMMOBILIZER CONTROL UNIT
(Left–Hand Drive Shown, Right–Hand
Drive Similar)
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the steering column covers. Refer to Section
6E, Steering Wheel and Column.
D29T003
3. Slide the immobilizer control unit toward steering
wheel until it slides off its mounting bracket.
4. Disconnect the electrical connectors from the immo-
bilizer control unit (1).

IMMOBILIZER ANTI-THEFT SYSTEM 9T–29
DAEWOO M–150 BL2
D29T004
Installation Procedure
After replacing the immobilizer control unit, the keys
must be re-authorized using the key coding procedure.
Refer to “Key Coding Procedure” in this section. Also,
the electronic control module (ECM) identification (ID)
code must be reset. Refer to “Identification (ID) Code
Reprogramming” in this section.
1. Connect the electrical connectors to the immobilizer
control unit.
2. Slide the immobilizer control unit onto its mounting
bracket.
D105A505
3. Install the steering column covers. Refer to Section
6E, Steering Wheel and Column.
4. Connect the negative battery cable.

9T–30 IMMOBILIZER ANTI-THEFT SYSTEM
DAEWOO M–150 BL2
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
 
Application
 
Nm
 
Lb-Ft
 
Lb-In
Immobilizer Control Unit Mounting Bolts4–35

IMMOBILIZER ANTI-THEFT SYSTEM 9T–31
DAEWOO M–150 BL2
SCHEMATIC AND ROUTING DIAGRAMS
D19T001B
IMMOBILIZER ANTI-THEFT SYSTEM

9T–32 IMMOBILIZER ANTI-THEFT SYSTEM
DAEWOO M–150 BL2
SCHEMATIC AND ROUTING DIAGRAMS
D209T001
REMOTE KEYLESS ENTRY AND IMMOBILIZER ANTI-THEFT SYSTEM