24-31
If idle speed is too high or low and there are
no DTCs in DTC memory, the following tests
(marked with dots) must be performed:
Check for false air in intake air system
Page 24
-68
.
Check throttle valve control module Page 24
-124
.
Evaporative Emission (EVAP) canister purge
regulator valve always open, checking
Page 24
-114
.
Perform adaptation of throttle valve control
module Page 24
-125
.
Significance of 5 digit indication of display group 056 x
x
x
x
x
Display field 4
0 A/C compressor: 0 = A/C compressor off; 1 = A/C compressor on
0 Manual transmission: Indication always 0
Driving mode for automatic transmission: 0 = selector lever in P or N; 1 = selector lever in 2/3/4/D/R
0 Indication always 0
0 Indication always 0
0 Indication always 0
Pa
ge 34 of 79 Motronic in
jection s
ystem, servicin
g
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU07.24.1
24-32
System pressure, fuel pressure
regulator and residual pressure,
checking
Note:
Fuel pressure regulator regulates fuel pressure
according to intake manifold pressure. This
ensures that the pressure drop at the fuel
injectors remains the same for each speed and
load range of the engine.
Special Tools and Equipment
Test requirements:
Repair Manual, Fuel Supply System, Repair Group 20
VAG1318V.A.G 1318 with V.A.G 1318/11 adapter, V.A.G 1318/12 pressure
hose with connectors and V.A.G 1318/13 adapter Fuel Pump (FP) relay OK; checking Page 24
-52
.
Fuel Pump (FP) OK, checking: Fuel filter OK Battery voltage at least 12.7 V Vehicles with automatic transmission Selector lever in P or N.
Pa
ge 35 of 79 Motronic in
jection s
ystem, servicin
g
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU07.24.1
