Removing and installing exhaust temperature sender 1 for cylinder bank 2 G236 — AUDI

Removing and installing
exhaust temperature sender 1 for cylinder bank 2
G236
Special tools and workshop equipment required
Ring spanner
3035
Engine and gearbox jack
V.A.G 1383 A
Spark plug connector pliers
V.A.G 1922
Removing
Release fasteners
arrows
and remove noise insulation.
Remove bolts
arrows
and detach heat shield for drive shaft (left-side)
1
.
Detach drive shaft (left-side) from flange shaft of gearbox.
Slacken hose clip
1
on heat shield for front exhaust pipe
Note
Disregard
item 2
.
Remove cover
1
at right of engine compartment.
Detach engine cover panels
A ... C
by removing bolts
arrows
.
Unscrew hose connections and bolt connections
arrows
and remove air duct.
Detach vacuum line
arrow
going to brake servo at bulkhead.
Remove bolts
arrows
.
Unplug electrical wiring to
coolant shortage indicator switch
F66
and move coolant expansion tank
2
to one side with coolant hoses
1
and
3
attached.
Remove seal
arrows
.
Pull off plenum chamber cover
1
towards front of vehicle.
Unscrew bolts
arrows
and take off cover for electronics box in plenum chamber.
Carefully lever off retaining strap with a screwdriver
arrow
.
Lay aside engine control unit with electrical connectors attached.
Release retainer
arrow
and pull auxiliary relay carrier in electronics box upwards to remove.
Disconnect the electrical connectors at connector point using
spark plug connector pliers
V.A.G 1922
.
Detach earth connection
2
and retainer
1
for electrical connectors from bulkhead.
Disengage engine wiring harness at electronics box and bulkhead
arrows
and move clear.
Take electrical connectors
2
,
4
and
5
out of bracket (left-side) on bulkhead and unplug.
Remove heat insulation sleeve at wiring harness and move wire to Lambda probe clear.
Note
Disregard
items 1, 3
.
Unscrew bolts
1
and
3
for heat shield.
Note
Disregard
item 2
.
Unscrew Lambda probe from front exhaust pipe (left-side).
Bend heat shield for front exhaust pipe to the side.
Vehicles without secondary air system:
Unplug electrical connector
1
for
exhaust temperature sender 1
G235
, bank 1 (brown), on intake manifold (right-side).
Note
Disregard
items 2, 3
.
All vehicles (continued):
Use
ring spanner
3035
to unscrew
exhaust temperature sender 1 for bank 2
G236
arrow
from exhaust manifold flange.
Vehicles with secondary air system:
Move electrical wire to control unit for exhaust temperature sender clear.
Unplug electrical connectors
1
and
2
.
Unbolt the control units for exhaust temperature senders from intake manifold
arrows
.
Remove
exhaust temperature sender 1, bank 2
G236
with control unit (black connector).
Installing
Tightening torques:
Component
Nm
Exhaust temperature sender 1, bank 2
G236
to exhaust manifold
27
Control unit for exhaust temperature sender to intake manifold
8
1)
1)
Renew self-locking nuts.
Installation is carried out in the reverse order; note the following:
Note
Hose connections and air pipes and hoses must be free of oil and grease before assembly.
Secure all hose connections with the correct type of hose clips (same as original equipment)
Electronic parts catalogue
.
To ensure that the air hoses can be properly secured at their connections, spray rust remover onto the worm thread of used hose clips before installing.
Fit all cable ties in the original positions when installing.
Fit all heat insulation sleeves in the original position when installing.
Install Lambda probe
Rep. Gr.
24
.
Install heat shield for front exhaust pipe
Fig.
.
Install cover for electronics box in plenum chamber
Rep. Gr.
97
.
Install air duct
Fig.
.
Secure drive shaft to flange shaft of gearbox
Rep. Gr.
40
.
Install heat shield for drive shaft
Fig.
.
Install noise insulation
Rep. Gr.
50
.