Daewoo MATIZ Service Manual page 1169

DTC 1601 – ECM Immobilizer Error (Incorrect Answer)
Step
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).
1
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?
1. Select CURRENT KEY STATUS from the scan
tool menu.
2. Read the STATUS OF CURRENT KEY message.
2
Does the KEY STATUS message indicate "KEY IS
WRONG"?
1. Select DIAGNOSIS from the scan tool menu.
2. Read the IMMO & ECM ID CODE (immobilization
and electronic control module identification code)
message.
3
Did the message differ from normal message?
Normal Message – ECM MODE: LEARNT
Check for an open serial data wire between the
immobilizer control unit and the electronic control
4
module (ECM).
Was the circuit open?
Repair the open serial data wire between the ECM
and the immobilizer control unit.
5
Is the repair complete?
1. Replace the ECM.
6 2. Reprogram the ID code.
Is the repair complete?
DAEWOO M–150 BL2
Action
IMMO. MODE: LEARNT
VIN CODE: SAME
IMMOBILIZER ANTI-THEFT SYSTEM 9T – 17
Value
–
Go to Step 2
–
Status Errors"
–
"Identification
–
Go to Step 5
–
–
Yes No
Go to
"Communi-
cation
Between
Immobilizer
and Test
Equipment"
Go to "Key
Go to Step 3
Go to
(ID) Code
Repro-
gramming" Go to Step 4
Go to Step 6
–
System OK
–
System OK