Mitsubishi MOTORS L200 1996, Workshop Manual

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CHASSIS ELECTRICAL –
Ignition Switch and Immobilizer System
54-13
INSPECTION CHART FOR DIAGNOSIS CODES
<DIESEL-POWERED VEHICLES>
54300710034
Diagnosis code No. Inspection items Reference page
11 Transponder communication system or radio interference of ID
code 54-11
12* ID codes are not the same or not registered 54-11
21 Communication system between fuel cut valve controller and
immobilizer-ECU 54-13
22 Malfunction of fuel cut valve controller system 54-14
23 Identification codes are not identical 54-14
31 EEPROM abnormality inside immobilizer-ECU 54-12
NOTE
*: diagnosis code No.12 is recorded.
INSPECTION PROCEDURE FOR DIAGNOSIS CODES
<DIESEL-POWERED VEHICLES>
For diagnosis code numbers other than those listed below, refer to “PETROL-POWERED VEHICLES”.
Code No.21 Communication system between fuel cut
valve controller and immobilizer-ECU Probable cause
The confirmation code is not sent from the fuel cut valve controller within the specified
time after the ignition key is turned to ON or, an incorrect code is sent.
D
Malfunction of harness or connector
D
Malfunction of fuel cut valve controller
D
Malfunction of immobilizer-ECU
Check the following connectors: A-90, C-19, C-36
NG
Repair
OK
Check trouble symptom.
NG
Check the harness between the immobilizer-ECU and fuel cut valve
controller.
NG
Repair
OK
Check the fuel cut valve controller power source and earth circuit.
(Refer to P.54-17, Inspection Procedure 6.)
NG
Repair
OK
Check trouble symptom.
NG
Replace the immobilizer-ECU.
Register the password (secret code), reset the code to the factory
setting and register the ID code. (Refer to P.54-23.)
Check trouble symptom.
NG
Replace the fuel cut valve controller (fuel injection pump assembly).