Removing and installing dash panel temperature sensor G56 — AUDI

Removing and installing
dash panel temperature sensor
G56
Note
G56
2
is only installed in vehicles with automatically controlled air conditioners. On vehicles with a manually controlled air conditioner, the opening in the storage area (or knee bolster) on the driver side is closed off using a sealing cap with no electrical function.
The
G56
2
measures 3 different values, which cannot be checked using workshop equipment. The
Climatronic control unit
J255
uses these measured values to calculate the temperature in the passenger compartment. The 3 measured values can vary depending on the ambient conditions and may only be approximately the same after a longer period of operation or no operation
Vehicle diagnostic tester
(
“Guided Fault Finding”
)
A contaminated sensor head on the
G56
2
or a contaminated or sealed opening in the storage area (or knee bolster)
4
may cause problems in controlling the air conditioner
Vehicle diagnostic tester
(
“Guided Fault Finding”
)
Removing
WARNING
Risk of injury from knee airbag.
Before working in the vicinity of pyrotechnic components, the mechanic must
“discharge static electricity”
. Observe the safety precautions for working on airbags
General body repairs, interior
Rep. gr.
00
Safety precautions; Safety precautions when working on pyrotechnic components
.
Switch off ignition.
Equipment version with ignition lock: Remove ignition key.
Remove dash panel trim or knee airbag (driver side)
3
General body repairs, interior
Rep. gr.
68
Shelves / trim panels; Removing and installing dash panel trim (driver side)
.
Unplug electrical connector
1
.
Remove the
dash panel temperature sensor
G56
2
from the retainer in the storage area (or knee bolster)
3
.
Installing
Install in reverse order.
Check the opening in the storage area (or knee bolster)
4
and sensor head on the
G56
2
for contamination.
Install remaining components.
Interrogate event memory and erase any entries displayed
Vehicle diagnostic tester
(
“Guided Fault Finding”
).
As a final step, check operation of heater/air conditioner.