Checking electrical components — AUDI

Checking electrical components
Note
The
“Electrical check”
function is not described in this Workshop Manual. When implementing electrical checks by way of the
“Guided fault-finding”
function, information is given on the functions to be checked
"Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051
.
The temperature-dependent resistance values of the various temperature sensors are stored in tables which can be called up via the
“Guided fault-finding”
function
"Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051
.
Vehicles with no air conditioner (heater only) are not fitted with various components which are required for control purposes on vehicles with an air conditioner (
air conditioner compressor regulating valve
N280
,
right temperature flap control motor
V159
,
temperature sensor blower
V42
etc.)
"Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051
and
Current flow diagrams, Electrical fault finding and Fitting locations
.
Various electrical components in the vehicle (e.g. the
heated rear window
Z1
and the heated seats), which do not form part of the air conditioner, are actuated by the air conditioner operating unit,
Climatronic control unit
J255
. Electrical checking of these components is to be performed as described in the air conditioner guided fault-finding routine
"Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051
.
Checking wiring and components with
test box
V.A.G 1598 A
Special tools and workshop equipment required
Basic test box
V.A.G 1598/14
with
adapter
V.A.G 1598/11
and
adapter
V.A.G 1598/12
Vehicle diagnostic, testing and information system
VAS 5051 A
with
multimeter leads
VAS 5051/7
,
probe
VAS 5051/8
and
current probe 50 A
VAS 5051/9
Voltage tester
V.A.G 1527 B
Adapter set
V.A.G 1594 C
Temperature measuring instrument (e.g. commercially available thermometer)
Current flow diagram for vehicle system to be checked
Current flow diagrams, Electrical fault finding and Fitting locations
Note
Electrical checking is to be performed as described in the guided fault-finding routine
"Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051
.