Ignition DAEWOO MATIZ 2003 Service Repair Manual

IMMOBILIZER ANTI-THEFT SYSTEM 9T–13
DAEWOO M–150 BL2
DIAGNOSTIC INFORMATION AND PROCEDURES
IMMOBILIZER SYSTEM (FENIX 5MR)
The immobilizer anti-theft system requires diagnosis
when it is not possible to start the engine. If the no-start
condition occurs because of the immobilizer system, a
diagnostic trouble code (DTC) 1600, 1601 or
1602 should be set.
The immobilizer control unit monitors the detection and
the reading of the ignition key. The self-test capacity is
limited to those functions. Faults are communicated to a
scan tool during diagnosis, but they are not stored in the
immobilizer control unit’s memory.
Unauthorized use of a scan tool could be a method of
defeating the immobilizer anti-theft system, so certain
scan tool procedures require the use of a password. The
following functions are password protected:

Coding of an additional key.

Deleting all key codes.

Deletion of the immobilizer identification (ID) code.

Deletion of the electronic control module (ECM) ID
code.
The following functions do not require a password:

Reading an ignition key to determine if the transpond-
er is working or if a key is authorized.
Reading the immobilizer ID code to verify that it
matches the ECM ID code.
IMMOBILIZER SYSTEM (SIRIUS D3)
The immobilizer anti-theft system requires diagnosis
when it is not possible to start the engine. If the no-start
condition occurs because of the immobilizer system, a
diagnostic trouble code (P) 1628, 1629 should be set.
The immobilizer control unit monitors the detection and
the reading of the ignition key. The self-test capacity is
limited to those functions. Faults are communicated to a
scan tool during diagnosis, but they are not stored in the
immobilizer control unit’s memory.
Unauthorized use of a scan tool could be a method of
defeating the immobilizer anti-theft system, so certain
scan tool procedures require the use of a password. The
following functions are password protected:

Coding of an additional key.

Deleting all key codes.
The following functions do not require a password:

Reading an ignition key to determine if the transpond-
er is working or if a key is authorized.

Reading the immobilizer ID code to verify that it
matches the ECM ID code.

9T–14 IMMOBILIZER ANTI-THEFT SYSTEM
DAEWOO M–150 BL2
D19T002B
DIAGNOSTIC TROUBLE CODE (DTC) 1600
ECM IMMOBILIZER ERROR (NO ANSWER)
Circuit Description
When the ignition is turned ON, the key is tested by the
immobilizer anti-theft system. While the key code is be-
ing read by the immobilizer control unit, the engine can
start and run with any key that will turn the lock cylinder.
The key code is read and compared with key codes that
have been stored in the memory of the immobilizer con-
trol unit. If a valid key is detected, the immobilizer control
unit sends a serial data release message to the elec-
tronic control module (ECM). Included in the release
message is an identification (ID) code which assures
that neither the immobilizer control unit nor the ECM has
been substituted to defeat the system. If the ECM re-
ceives an invalid release message, the ECM performs
the following actions:
Disables the fuel injector circuit.

Disables the fuel pump circuit.

Disables the ignition coil.
DTC Will Set When

The ECM does not receive the signal from the immo-
bilizer control module when the ignition is turned on.

The above conditions are maintained until the ignition
is switched OFF.
DTC 1600 Will Clear When

The ignition switch is turned OFF or the scan tool
TROUBLE CODE CLEAR command is issued.

IMMOBILIZER ANTI-THEFT SYSTEM 9T–15
DAEWOO M–150 BL2
DTC 1600 – ECM Immobilizer Error (No Answer)
StepActionValueYesNo
1
Connect the scan tool using the following procedure:
1. Insert the cartridge into the scan tool.
2. Turn the ignition switch to the OFF position.
3. Connect the scan tool to the data link connector
(DLC).
4. Connect the scan tool’s power cord to the cigar
lighter socket.
5. Turn the ignition ON, but do not start the engine.
Is communication established between the scan tool
and the immobilizer control unit?
–
Go to Step 2
Go to
“Communi-
cation
Between
Immobilizer
and Test
Equipment”
2
Select CURRENT KEY STATUS from the scan tool
menu.
Did the STATUS OF CURRENT KEY message
indicate “KEY IS WRONG”?
–
Go to “Key
Status Errors”
Go to Step 3
3
Read the IMMO & ECM ID CODE message that
was displayed after requesting DIAGNOSIS.
Did the message differ from normal message?
Normal Message –ECM MODE: LEARNT
IMMO. MODE: LEARNT
VIN CODE: SAME
–
Go to
“Identification
(ID) Code
Repro-
gramming”
Go to Step 4
4
Check for an open serial data wire between the
immobilizer control unit and the ECM.
Was the circuit open?
–
Go to Step 5Go to Step 6
5
Repair the open serial data wire between the ECM
and the immobilizer control unit.
Is the repair complete?
–
System OK
–
6
1. Replace the ECM.
2. Reprogram the identification (ID) code. Refer to
“Identification (ID) Code Reprogramming” in this
section.
Is the repair complete?
–
System OK
–

9T–16 IMMOBILIZER ANTI-THEFT SYSTEM
DAEWOO M–150 BL2
D19T002B
DIAGNOSTIC TROUBLE CODE (DTC) 1601
ECM IMMOBILIZER ERROR (INCORRECT ANSWER)
Circuit Description
When the ignition is turned ON, the key is tested by the
immobilizer anti-theft system. While the key code is be-
ing read by the immobilizer control unit, the engine can
start and run with any key that will turn the lock cylinder.
The key code is read and compared with key codes that
have been stored in the memory of the immobilizer con-
trol unit. If a valid key is detected, the immobilizer control
unit sends a serial data release message to the elec-
tronic control module (ECM). Included in the release
message is an identification (ID) code which assures
that neither the immobilizer control unit nor the ECM has
been substituted to defeat the system. If the ECM re-ceives an invalid release message, the ECM performs
the following actions:

Disables the fuel injector circuit.

Disables the fuel pump circuit.

Disables the ignition coil.
DTC 1601 Will Set When

The ECM receives an incorrect release message
from the immobilizer control unit more than five times.
DTC 1601 Will Clear When

The ignition switch is turned OFF or the scan tool
TROUBLE CODE CLEAR command is issued.

IMMOBILIZER ANTI-THEFT SYSTEM 9T–17
DAEWOO M–150 BL2
DTC 1601 – ECM Immobilizer Error (Incorrect Answer)
StepActionValueYesNo
1
Connect the scan tool using the following procedure:
1. Insert the cartridge into the scan tool.
2. Turn the ignition switch to the OFF.
3. Connect the scan tool to the data link connector
(DLC).
4. Connect the scan tool’s power cord to the cigar
lighter socket.
5. Turn the ignition ON, but do not start the engine.
Is communication established between the scan tool
and the immobilizer control unit?
–
Go to Step 2
Go to
“Communi-
cation
Between
Immobilizer
and Test
Equipment”
2
1. Select CURRENT KEY STATUS from the scan
tool menu.
2. Read the STATUS OF CURRENT KEY message.
Does the KEY STATUS message indicate “KEY IS
WRONG”?
–
Go to “Key
Status Errors”
Go to Step 3
3
1. Select DIAGNOSIS from the scan tool menu.
2. Read the IMMO & ECM ID CODE (immobilization
and electronic control module identification code)
message.
Did the message differ from normal message?
Normal Message –ECM MODE: LEARNT
IMMO. MODE: LEARNT
VIN CODE: SAME
–Go to
“Identification
(ID) Code
Repro-
gramming”
Go to Step 4
4
Check for an open serial data wire between the
immobilizer control unit and the electronic control
module (ECM).
Was the circuit open?
–
Go to Step 5Go to Step 6
5
Repair the open serial data wire between the ECM
and the immobilizer control unit.
Is the repair complete?
–
System OK
–
6
1. Replace the ECM.
2. Reprogram the ID code.
Is the repair complete?
–
System OK
–

9T–18 IMMOBILIZER ANTI-THEFT SYSTEM
DAEWOO M–150 BL2
D19T002B
DIAGNOSTIC TROUBLE CODE (DTC) 1602
ECM IMMOBILIZER ERROR (ECM LOCKED)
Circuit Description
When the ignition is turned ON, the key is tested by the
immobilizer anti-theft system. While the key code is be-
ing read by the immobilizer control unit, the engine can
start and run with any key that will turn the lock cylinder.
The key code is read and compared with key codes that
have been stored in the memory of the immobilizer con-
trol unit. If a valid key is detected, the immobilizer control
unit sends a serial data release message to the elec-
tronic control module (ECM). Included in the release
message is an identification (ID) code which assures
that neither the immobilizer control unit nor the ECM has
been substituted to defeat the system. If the ECM re-ceives an invalid release message, the ECM performs
the following actions:

Disables the fuel injector circuit.

Disables the fuel pump circuit.

Disables the ignition coil.
DTC 1602 Will Set When

The immobilizer control unit does not learn and store
the codes of valid keys.
DTC 1602 Will Clear When

The ignition switch is turned OFF or the scan tool
TROUBLE CODE CLEAR command is issued.

IMMOBILIZER ANTI-THEFT SYSTEM 9T–19
DAEWOO M–150 BL2
DTC 1602 – ECM Immobilizer Error (ECM Locked)
StepActionValueYesNo
1
Connect the scan tool using the following procedure:
1. Insert the cartridge into the scan tool.
2. Turn the ignition switch to the OFF.
3. Connect the scan tool to the data link connector
(DLC).
4. Connect the scan tool’s power cord to the cigar
lighter socket.
5. Turn the ignition ON, but do not start the engine.
Is communication established between the scan tool
and the immobilizer control unit?
–
Go to Step 2
Go to
“Communi-
cation
Between
Immobilizer
and Test
Equipment”
2
1. Select CURRENT KEY STATUS from the scan
tool menu.
2. Read the STATUS OF CURRENT KEY message.
Does the KEY STATUS message indicate “KEY IS
WRONG”?
–
Go to “Key
Status Errors”
Go to Step 3
3
1. Select DIAGNOSIS from the scan tool menu.
2. Read the IMMO & ECM ID CODE (immobilization
and electronic control module identification code)
message.
Did the message differ from normal message?
Normal Message –ECM MODE: LEARNT
IMMO. MODE: LEARNT
VIN CODE: SAME
–Go to
“Identification
(ID) Code
Repro-
gramming”
Go to Step 4
4
Check for an open serial data wire between the
immobilizer control unit and the electronic control
module (ECM).
Was the circuit open?
–
Go to Step 5Go to Step 6
5
Repair the open serial data wire between the ECM
and the immobilizer control unit.
Is the repair complete?
–
System OK
–
6
1. Replace the ECM.
2. Reprogram the ID code.
Is the repair complete?
–
System OK
–

9T–20 IMMOBILIZER ANTI-THEFT SYSTEM
DAEWOO M–150 BL2
D209T002
DIAGNOSTIC TROUBLE CODE (P) 1628 (SIRIUS D3)
ECM IMMOBILIZER ERROR (NO SUCCESSFUL COMMUNICATION)
Circuit Description
When the ignition is turned ON, the key is tested by the
immobilizer anti-theft system. While the key code is be-
ing read by the immobilizer control unit, the engine can
start and run with any key that will turn the lock cylinder.
The key code is read and compared with key codes that
have been stored in the memory of the immobilizer con-
trol unit. If a valid key is detected, the immobilizer control
unit sends a serial data release message to the elec-
tronic control module (ECM). Included in the release
message is an identification (ID) code which assures
that neither the immobilizer control unit nor the ECM has
been substituted to defeat the system. If the ECM re-ceives an invalid release message, the ECM performs
the following actions:

Disables the fuel injector circuit.
P 1628 Will Set When

The ECM does not receive the signal from the immo-
bilizer control module within 1.260 seconds after the
ignition is turned on.

The above conditions are maintained until the ignition
is switched OFF.
P 1628 Will Clear When

The ignition switch is turned OFF or the scan tool
TROUBLE CODE CLEAR command is issued.

IMMOBILIZER ANTI-THEFT SYSTEM 9T–21
DAEWOO M–150 BL2
P 1628 – ECM Immobilizer Error (No Successful Communication)
StepActionValueYesNo
1
Connect the scan tool using the following procedure:
1. Insert the cartridge into the scan tool.
2. Turn the ignition switch to the OFF position.
3. Connect the scan tool to the data link connector
(DLC).
4. Connect the scan tool’s power cord to the cigar
lighter socket.
5. Select immobilizer mode on the scan tool.
6. Turn the ignition ON, but do not start the engine.
Is communication established between the scan tool
and the immobilizer control unit?
–
Go to Step 2
Go to
“Communi-
cation
Between
Immobilizer
and Test
Equipment”
2
Read the IMMO & ECM ID CODE message that
was displayed after requesting DIAGNOSIS.
Did the message differ from normal message?
Normal Message –ECM MODE: LEARNT
IMMO. MODE: LEARNT
VIN CODE: SAME
–
Go to
“Identification
(ID) Code
Repro-
gramming”
Go to Step 3
3
Check for an open serial data wire between the
immobilizer control unit and the ECM.
Was the circuit open?
–
Go to Step 4Go to Step 5
4
Repair the open serial data wire between the ECM
and the immobilizer control unit.
Is the repair complete?
–
System OK
–
5
1. Replace the immobilizer.
2. Reprogram the identification (ID) code. Refer to
“Identification (ID) Code Reprogramming” in this
section.
Is the repair complete?
–
System OK
–
Go to Step 6
6
1. Replace the ECM.
2. Turn the ignition ON, OFF for more than 4
seconds.
3. Turn the ignition ON.
Is the repair complete?
–
System OK
–

9T–22 IMMOBILIZER ANTI-THEFT SYSTEM
DAEWOO M–150 BL2
D209T002
DIAGNOSTIC TROUBLE CODE (P) 1629 (SIRIUS D3)
ECM IMMOBILIZER ERROR (INCORRECT ANSWER)
Circuit Description
When the ignition is turned ON, the key is tested by the
immobilizer anti-theft system. While the key code is be-
ing read by the immobilizer control unit, the engine can
start and run with any key that will turn the lock cylinder.
The key code is read and compared with key codes that
have been stored in the memory of the immobilizer con-
trol unit. If a valid key is detected, the immobilizer control
unit sends a serial data release message to the elec-
tronic control module (ECM). Included in the release
message is an identification (ID) code which assures
that neither the immobilizer control unit nor the ECM hasbeen substituted to defeat the system. If the ECM re-
ceives an invalid release message, the ECM performs
the following actions:

Disables the fuel injector circuit.
P 1629 Will Set When

The ECM receives an incorrect release message
from the immobilizer control unit more than five times.
P 1629 Will Clear When

The ignition switch is turned OFF or the scan tool
TROUBLE CODE CLEAR command is issued.