Workshop Manuals Factory service & repair Fiat
01 General information02 Specifications03 Manufacturing data and tolerances04 Tightening torques05 Fluids and lubricants06 Maintenance07 Diagnostic checks08 Engine09 Clutch10 Gearbox and differential11 Transmission (4x4)12 Axles and driveshafts13 Brakes14 Steering15 Suspension and wheels16 Heating, air conditioning and auxiliary units17 Electrical equipment18 Body fittings19 Body panels and frame20 Wiring diagrams and electrical functions21 Wiring harnesses22 Connectors and pin-outs23 Fault diagnosis24 Special tools
Fiat Ducato Factory Service Manual (2002-2006)20 · Wiring diagrams and electrical functions
20 · Electrical

Supplementary heater operational description

Make
Fiat
Model
Ducato Factory Service Manual
Year
2002–2006
Section
Climate control system › Supplementary heater operational description
Wiring diagrams and electrical functionsSupplementary heater operational description

SUPPLEMENTARY HEATER OPERATIONAL DESCRIPTION

Operational Description

The power supplies to fans N140, N141 and N142 are controlled by relay T23 and protected by fuse F57, both housed in the optional underfacia junction unit B101. Activation is controlled by a key housed in control unit M070. The control unit, from pin 5, supplies relay T23, which closes its internal contact to supply the fans.

Control unit M070 comes with its own internal lighting that is activated by turning on the side lights. The heater controls also come with internal lighting G045 that is activated with the side lights on.

Parts & tools for this job For 2002 Fiat Ducato

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