Workshop Manuals Factory service & repair Alfa Romeo
01 General data and specifications02 Maintenance03 Diagnosis – checks04 Engine (1.6 and 2.0 Twin Spark)05 Clutch06 Gearbox (manual and Selespeed)07 Front axle08 Brakes, ABS and traction control09 Steering10 Suspension and wheels11 Heating, air conditioning and washers12 Electrical equipment13 Body14 Body panels and reinforcement15 Wiring diagrams16 Connectors and pin-outs17 Wiring harnesses18 Fault diagnosis19 Special tools
Alfa Romeo 147 Factory Service Manual (2000-2002)08 · Brakes, ABS and traction control
08 · Brakes

Diagnostic functions

Make
Alfa Romeo
Model
147 Factory Service Manual
Year
2000–2002
Section
Traction control › Diagnostic functions
Brakes, ABS and traction controlDiagnostic functions

Diagnostic functions

The ABS 5.7 control unit is able to carry out automatic diagnosis on the system and if a fault is found is able to:

deactivate the entire system

deactive the system partially (maintaining the ABS/EBD function)

A list of anomalies detectable by the control unit, warning light statuses and recovery strategies is given below.

ErrorABS warning lightEBD warning lightVDC warning lightRecovery
electrical fault in rh front sensorONOFFONR3
electrical fault in lh front sensorONOFFONR3
electrical error in rh rear sensorONOFFONR3
electrical error in lh rear sensorONOFFONR3
error in rh front sensorONOFFONR3
error in lh front sensorONOFFONR3
error in rh rear sensorONOFFONR3
error in lh rear sensorONOFFONR3
rh front ABS discharge solenoidONONONR4
rh front ABS charge solenoidONONONR4
lh front ABS discharge solenoidONONONR4
lh front ABS charge solenoidONONONR4
lh rear ABS discharge solenoidONONONR4
lh rear ABS charge solenoidONONONR4
rh rear ABS discharge solenoidONONONR4
rh rear ABS charge solenoidONONONR4
Main valve 1 (VLV1)ONONONR4
Main valve 2 (VLV2)ONONONR4
Pilot valve 1 (USV1)ONONONR4
Pilot valve 2 (USV2)ONONONR4
Pump motorONOFFONR3
Valve relayONONONR2/R5
NO - NC brake light switchONOFFONR3
Side acceleration sensor (AY)OFFOFFONR4
Yawing sensorOFFOFFONR4
Brake fluid pressure sensorONOFFONR3
Lambda 6 (magnetic wheel malfunction)ONONR1
NOTB (implementation anomaly)ONOFFONR5/R3
Steering angle sensorOFFOFFONR4
CAN-BUS networkOFFOFFONR4
Engine CAN message errorsOFFOFFONR4
JunctionONONONR1
Supply voltageONONONR2
Variant Coding (incorrect vehicle configuration received from CAN network)ONONONR1
Communication with fault warning lightsONONONON

R1 - System deactivation

R2 - VDC/ASR,ABS,EBD deactivation

R3 - VDC/ASR,ABS deactivation

R4 - VDC/ASR deactivation

R5 - Inhibition of VDC/ASR and ABS during malfunction

R6 - Store fault without disabling system

NOTE:

Although the system is connected to the C-CAN line, it comes with its own diagnostic line known as the K line. The system may be diagnosed by connecting a Tester to the tester connection on the N.B.C. (body computer node).

Parts & tools for this job For 2000 Alfa Romeo 147

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