wiring diagram AUDI A4 2000 B5 / 1.G APB Engine Motronic Syst

[x] Cancel search | Manufacturer: AUDI, Model Year: 2000, Model line: A4, Model: AUDI A4 2000 B5 / 1.G
Pages: 166, PDF Size: 0.53 MB

Page 4 of 166

AUDI A4 2000 B5 / 1.G APB Engine Motronic Syst 01-4

Checking function

- Switch ignition on.

The MIL must light up
If the MIL does not light with ignition switched:

Cause:
MIL is not
activated or does
not li

Page 5 of 166

AUDI A4 2000 B5 / 1.G APB Engine Motronic Syst supply are OK:
- Check for open circuit or
short circuit in wiring
between engine control
module and MIL using wiring
diagram. Determine and
eliminate malfunction.
If there are no malfuncti

Page 7 of 166

AUDI A4 2000 B5 / 1.G APB Engine Motronic Syst reached:
- Determine and eliminate
short circuit to Ground in wiring
between engine control
module and MIL using wiring
diagram.
If there are no malfunctions in
the wiring to the MIL:
Mal

Page 13 of 166

AUDI A4 2000 B5 / 1.G APB Engine Motronic Syst 01-11

- If no display appears, check diagnostic
cables:

Electrical Wiring Diagrams, Troubleshooting &
Component Locations Depending on the function required:

-

Page 15 of 166

AUDI A4 2000 B5 / 1.G APB Engine Motronic Syst 01-12

Rapid data transfer
HELP
Control module does not answer

If the display shows one of the messages reproduced here, run through
the troubleshooting procedure as described in the Electrica

Page 22 of 166

AUDI A4 2000 B5 / 1.G APB Engine Motronic Syst 01-19
Diagnostic Trouble Code (DTC) table

Notes:

If malfunctions occur in the sensors and components being monitored, they will be stored in the DTC memory together
with an indication of the t

01-19
Diagnostic Trouble Code (DTC) table

Notes:

If malfunctions occur in the sensors and components being monitored, they will be stored in the DTC memory together
with an indication of the type of malfunction. Notes on Engine Power Control (EPC) (drive by wire) Page 24
-139
.
Malfunctions relating to the electronic throttle are also indicated by the EPC (Electronic Power Control) warning light in the
instrument cluster.
Malfunction which decrease exhaust emissions are indicated by an Exhaust Malfunction Indicator Light (MIL), the MIL is
located in the instrument cluster. As soon as certain malfunction are recognized, the MIL is switched on immediately.
There are also malfunctions, were the MIL is switched on only after the engine is started again.
Sporadically occurring malfunctions (temporary malfunctions) will be indicated on the VAG1551 display as "SP."
The DTC table is arranged according to the 5-digit DTC in the left-hand column.
If a malfunction is stored in the DTC memory and then does not occur again during the next 40 engine warm-up phases,
the DTC will be automatically erased.
Components that are indicated as being faulty by the VAG1551 should not be replaced immediately. Always start by
checking the wiring, connectors and Ground (GND) connections for the component using the current wiring diagram. This
is particularly important in the case of sporadic malfunctions (indicated by the letters "SP"on the scan tool display).
If the connector for the engine control module is disconnected or if the battery is disconnected, all the learned values
(adaptation values) stored in the control module will be erased, although the contents of the DTC memory will remain
intact. The next time the engine is started the idling may be rough at first. In this case let the engine run at idle for a few
Pa
ge 22 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

Page 71 of 166

AUDI A4 2000 B5 / 1.G APB Engine Motronic Syst 01-59

DTC
Description of malfunction
Corrective
SAE
VAG

P1475 17883 EVAP Emission Contr. LDP
Circ
Malfunction/Signal Circ.
Open
2) - Check hoses (pressure/vacuum) to leak d

Page 82 of 166

AUDI A4 2000 B5 / 1.G APB Engine Motronic Syst 01-68

DTC
Description of
malfunction
Corrective action
SAE
VAG

P1603 18011 Internal Control Module
Malfunction
2) - Replace Engine Control Module (ECM) Page 24
-24
.
P1604