Daewoo NUBIRA, User Manual

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IMMOBILIZER ANTI–THEFT SYSTEM 9T – 3
DAEWOO V–121 BL4
S
KEY IS OCCUPIED. Only five keys may be coded.
If a new key is desired, the previous key codes
must be deleted. Up to five keys may then be au-
thorized.
S
ALREADY AUTHORIZED. Key coding is being at-
tempted with a key that is already authorized.
S
ERROR NO. 001, 002, 003. There is no commu-
nication between the transponder in the ignition key
and the detection coil. Follow the steps below to
diagnose the problem:
1. Try a different key. If a different key works, the
problem is in the original key.
2. If trying a different key results in the same error
message, replace the detection coil.
S
INVALID KEY. The communication between the
immobilizer control unit and the key transponder
has not validated the key. Follow the steps below to
diagnose the problem:
1. Code the key. Refer to”Key Coding Procedure”in
this section.
2. If the same message is received after key coding,
check the connection of the detection coil.
3. If the detection coil is okay, replace the immobilizer.
Refer to”Immobilizer Control Unit” in this section.
S
NO TRANSPONDER DETECTED. The fault may
be in ignition key transponder, the detection coil, or
the immobilizer. Follow the steps below to diagnose
the problem:
1. Try a different key. If a different key works, the
problem is in the original key.
2. If trying a different key results in the same error
message, check the connection of the detection
coil.
3. If the connection of the detection coil is okay, dis-
connect the detection coil and use an ohmmeter to
check for an open detection coil.
4. If the detection coil is not open, replace the immobi-
lizer control unit. Refer to”Immobilizer Control Unit”
in this section.
COMMUNICATION BETWEEN
IMMOBILIZER AND TEST
EQUIPMENT
1. Connect the test equipment as described in theS-
can Tool Equipment Manual.
2. If communication between the scan tool and the
test equipment is unsuccessful, wait 30 seconds
and try again.
3. If communication is not successful on the second
try, turn the ignition OFF, and check the wire and
the connectors between the immobilizer control unit
terminal 3 and the data link connector (DLC).
4. If the wire and the connectors between the DLC
and the immobilizer control unit are OK, replace the
immobilizer control unit. Refer to ”Immobilizer Con-
trol Unit”in this section.