coolant temperature AUDI A8 1998 D2 / 1.G ATQ Engine Motronic Injection System Servicing Workshop Manual
Page 11 of 78
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17 -
Engine Coolant Temperature (ECT) sensor
-G62-
for Engine Control Module (ECM)At coolant line behind cylinder head engine
bank 1 with Engine Coolant Temperature (ECT)
Sensor -G2- Checking Page 28
-23
If necessary, release pressure in cooling
system before removing
18 -
Throttle valve control module -J338- With throttle drive (power accelerator
actuation) -G186-, angle sensor -1- for
throttle drive (power accelerator actuation)
-G187-, and angle sensor -2- for throttle
drive (power accelerator actuation) -G188-
19 -
Intake Manifold Change-Over Valve -N156-
20 -
Fuel pressure regulator
21 -
Engine Speed (RPM) sensor -G28- in transmission housing via ring gearChecking Page 28
-19
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Page 27 of 78
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Idle speed (RPM), checking
Special Tools and Equipment
Test requirements:
VAS5051 with VAG5051/1
orVAG1551 with VAG1551/3BExhaust system free of leaks. Coolant Temperature at least 80 C. Electrical consumers switched off (radiator fan must NOT run during
test). A/C switched off. No pressure gauge connected. Vehicles with automatic transmission Selector lever in P or N.
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Page 67 of 78
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Test requirements:
Coolant Temperature at least 80 C.
Electrical consumers switched off (radiator
fan must NOT run during test).
A/C switched off.
Fuse for Mass Air Flow (MAF) sensor OK
Electrical Wiring Diagrams, Troubleshooting &
Component Locations binder
Checking function
- Connect VAS5051 tester or VAG1551 scan tool
and select the control module for engine
electronics using "address word" 01 Page 01
-
9 .
Engine must run at idle for this.Rapid data transfer
HELP
Select function XX
When indicated on display:
-
Press buttons -0- and -4- to select "Initiate basic setting" and press -Q-
Pa
ge 67 of 78 Motronic in
jection s
ystem, servicin
g
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.24.1