Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 145/146 Electrical System Diagnosis Manual, Volume 3 (1994-2001)01 · 145 electrical system diagnosis
01 · Diagnostics

Manual diagnosis (page 6 of 8)

Make
Alfa Romeo
Model
145/146 Electrical System Diagnosis Manual, Volume 3
Year
1994–2001
Section
Anti Theft Device
145 electrical system diagnosisManual diagnosis · page 6 of 8
THE ANTI-THEFT FAILS TO OPERATE THE DOOR LOCKSTEST H
TEST PROCEDURERESULTCORRECTIVE ACTION
H1CHECK OPERATION OF THE DOOR LOCKING DEVICE
– Check that the door locking device is working properly engaging the key in the door locks		OKCarry out step H2
NOT OKFollow the instructions in FAULT-FINDING of the "DOOR LOCKING DEVICE" section
H2CHECK CONTINUITY
– Check the continuity of the cables between fusebox G1 - pin 3 and 2 of connector M - and receiver N67 - pin 5 and 6 respectively		OKCheck the connection between receiver N67 and the anti- theft control unit N45 (pin A2)
NOT OKRestore the wiring
REMOTE CONTROL NOT WORKINGTEST I
TEST PROCEDURERESULTCORRECTIVE ACTION
I1CHECK REMOTE CONTROL
– Check that the remote control is working properly: pressing the button the led should turn on		OKCarry out step I2
NOT OKCheck the transmitter batteries.
If necessary change the transmitter.
N.B. In this case it will be necessary to reprogramme the whole system (see "Programming the transmitter")
I2CHECK RECEIVER
– Check that the receiver is working properly: pressing the button of the transmitter suitably pointed at the receiver N67 the receiver led should light up to indicate that the signal has been received		OKCarry out step I3
NOT OKChange the trnsmitter N67 located in the front ceiling light
I3CHECK FUSE
– Check the intactness of fuse F16 of fusebox G1		OKCarry out step I4
NOT OKChange the fuse F16
I4CHECK VOLTAGE
– Check for 12 V "direct" at pin 3 of N67 and 12 V "key-operated" at pin 7 of N67		OKCarry out step I5
NOT OKRestore the wiring between N67 and fusebox G1
I5CHECK EARTH
– Check that pin 4 of N67 is earthed		OKChange the receiver N67
NOT OKRestore the connection between N67 and earth G63b

Parts & tools for this job For 1994 Alfa Romeo 145/146

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