ignition AUDI A4 1995 B5 / 1.G APB Engine Electronic Engine Power Control Checking User Guide
Page 24 of 39
24-157
Checking voltage supply to throttle valve
control module
- Disconnect harness connector from throttle
valve control module.
- Switch ignition on.
If the specifications are not obtained, test wiring connections from engine
control module to throttle valve control module Page 24
-158
.
If the readouts match the specifications, test also the signal wires and
activation wires for the throttle valve positioner Page 24
-158
. - Connect hand-held multimeter (voltage range) between the following
sockets on connector:
6-pin connector on wiring harness, socket
Specification
2 + Ground (GND) approx. 5 V
2 + 6 approx. 5 V
Pa
ge 24 of 39 Electronic En
gine Power Control
(EPC
), checkin
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.FU04.24.4
Page 26 of 39
24-159
Throttle Position (TP) sensor -G79 and
Sender -2- for accelerator pedal position
-G185, checking
Component location of Throttle Position (TP) sensor -G79 and
Sender -2- accelerator pedal position
The Throttle Position (TP) Sensor -G79 and Sender -2- for accelerator
pedal position -G185 are located at the accelerator pedal. Both sensors
inform (completely independently of the other) the engine control module
of the driver's throttle requirement (pedal position). Both sensors are
located in a single housing.
- Connect vehicle diagnostic, testing and information system VAS 5051
or VAG1551 scan tool and select engine electronics control module by
entering address word "01" Page 01
-9 . When doing this the ignition
must be switched on.
Pa
ge 26 of 39 Electronic En
gine Power Control
(EPC
), checkin
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.FU04.24.4
Page 31 of 39
24-163
Checking voltage supply of accelerator
position sensors
- Remove storage compartment on driver's
side.
Repair Manual, Body Interior, Repair Group
68
- Disconnect harness connector for accelerator
position sensor.
- Switch ignition on.
- Connect hand-held multimeter (voltage range) between the following
sockets on the connector: 6-pin connector on wiring harness, socket
Specification
2 + Ground (GND) approx. 5 V
1 + 3 approx. 5 V
5 + Ground (GND) approx. 5 V
5 + 4 approx. 5 V
Pa
ge 31 of 39 Electronic En
gine Power Control
(EPC
), checkin
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.FU04.24.4
Page 35 of 39
24-166
Kick-Down function, adaptation
On vehicles with automatic/inifinitely variable
transmission, when the accelerator position
sensor or the Engine Control Module (ECM) was
replaced, the Kick-Down function from ECM must
be adapted.
Test conditions
No malfunctions stored in DTC memory
Page 01
-15
, check DTC memory
Engine not running, ignition switched on
- Connect vehicle diagnostic, testing and
information system VAS 5051 or VAG1551 scan
tool and select engine electronics control
module by entering address word "01" Page 01
-9 .
When doing this the ignition must be switched
on.
Pa
ge 35 of 39 Electronic En
gine Power Control
(EPC
), checkin
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.FU04.24.4