Workshop Manuals Factory service & repair Alfa Romeo
01 General data and specifications02 Engine (Twin Spark, JTD and V6)03 Clutch04 Gearbox (manual, Selespeed and Q-System)05 Front axle06 Brakes, ABS and traction control07 Steering08 Suspension and wheels09 Heating, air conditioning and washers10 Electrical equipment11 Body12 Body panels and reinforcement13 Wiring diagrams14 Connectors and pin-outs15 Wiring harnesses16 Fault diagnosis17 Special tools
Alfa Romeo 156 Factory Service Manual (1997-2002)16 · Fault diagnosis
16 · Diagnostics

L16 Climate control re-circulation not working

Make
Alfa Romeo
Model
156 Factory Service Manual
Year
1997–2002
Section
Climate control › L16 Climate control re-circulation not working
Fault diagnosisL16 Climate control re-circulation not working

L16 Climate control re-circulation not working

The recirculation function is not working properly

StepTest procedureResultAction
1CHECK WITH DIAGNOSTIC EQUIPMENT

Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket

Check that there are no faults in the climate control control unit.

OK

Move onto step 2

An error is detected in the control unit
  • Continue according to the instructions for the diagnostic equipment

End of diagnosis

Lack of dialogue with the control unit

Restore:

End of diagnosis

2MIXTURE MOTOR CHECK

Using the diagnostic equipment (Examiner or other instruments) carry out the active diagnosis for the recirculation motor

OK

Move onto step 3

Recirculation motor faulty connection

End of diagnosis

Recirculation motor faulty

End of diagnosis

Recirculation motor flap faulty

End of diagnosis

3CHECK CORRECT OPERATION

Check that the fault is no longer present

OK

End of diagnosis

Fault persists

Incorrect selection of diagnostic procedure

Parts & tools for this job For 1997 Alfa Romeo 156

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