engine AUDI A4 1997 B5 / 1.G AFC Engine On Board Diagnostic Multiport Fuel Injection User Guide

01-9

For the function:

02: Check DTC
Memory - Let engine idle, or, crank
engine with starter for at
least 5 seconds without
switching ignition off
03: Output
Diagnostic
Test Mode - Switch ignition on
04: Basic Setting
- Let engine run or switch
ignition on
07: Code Control
Module - Switch ignition on
08: Read
Measuring
Value Block - Let engine run or switch
ignition on

- Switch printer on with PRINT button (indicator
light in the button lights up).

- Press button -1- for "rapid data transfer"
operating mode.
Rapid data transfer
HELP
Insert address word XX

Indicated on display
Note:
After inserting address word 00 and pressing -Q- button to confirm input,
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an automatic test sequence is carried out (checks DTC memory of all
systems with rapid data transfer).
- Press buttons -0- and -1- to insert the "Engine Electronics" address
word 01.
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01-10

Rapid data transfer
Q
01 - Engine Electronics

Indicated on display
- Press -Q- button to confirm input.
Rapid data transfer Scan Tool sends address word 01

Indicated on display
_________________________________________________________
Rapid data transfer
HELP
Control module does not answer

If the following is shown on the display:
Notes:
Electrical Wiring Diagrams, Troubleshooting & Component Locations - A list of possible malfunction causes can be printed out by pressing the
HELP button.
Check data link connector/engine control module wiring connection:Engine control module faulty Diagnostic Trouble Code (DTC) table,
page 01
-26
.
Rapid data transfer
HELP
Error in communication link

If the following is shown on the display:
Notes:
Electrical Wiring Diagrams, Troubleshooting & Component Locations
On vehicles with several On Board Diagnostic (OBD) systems, check
wiring connection between the individual systems: For vehicles with only MFI (Engine Electronics) On Board Diagnostic
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(OBD) capability, the engine control module is faulty Diagnostic
Trouble Code (DTC) table, page 01
-26
.
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01-11

Rapid data transfer
HELP
K wire not switching to Ground

If one of the following two problems is shown on the display
Rapid data transfer HELPK wire not switching to B+

Note:
Check data link connector/engine control module wiring connection:
Electrical Wiring Diagrams, Troubleshooting & Component Locations
_________________________________________________________ - A list of possible malfunction causes can be printed out by pressing the
HELP button. - After the malfunction cause is repaired, insert address word 01 again
and press -Q- button to confirm input.
8D0906266 2.8l V6/2V MFI OBD2
D01
Codin
g 01051
WSC 06388

The control module identification and the coding are shown on the
display:
Engine control module replacement part no. 8D0906266
For current engine control module version Parts catalog
Engine displacement: 2.8 liters Engine construction type: V-engine, 6-cylinderValves per cylinder: 2 valvesFuel injection system: Multiport Fuel Injection (MFI)Engine control module software version: OBD2, EPROM-status
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01-12

Engine control module hardware and software
version: D_ _ Control module program status
Engine control module coding: 01051
Diagnostic Trouble Code (DTC) table, page 01
-247
.

VAG plant number: WSC 06388 (where the
VAG 1551 scan tool was used for the last
coding and/or adaptation)

Notes:
If the engine control module version that
corresponds to the vehicle is not displayed,
replace engine control module page 01
-265
.
Incorrect engine control module coding leads to:

Driving performance problems (jerky shifting,
abrupt load change, etc.)
Increased fuel consumption
Elevated exhaust gas values
Reduction in transmission service life

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(OBD), carry out additional troubleshooting according to the Malfunction
Table in the "Engine Troubleshooting" binder.
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01-15

Rapid data transfer DTC Memor
y is erased

Indicated on display
-
Press button.
Rapid data transfer
HELP
Select function XX

Indicated on display
Note:
After address word 00 is inserted, the DTC memory of all systems with
rapid data transfer is checked. - Repair malfunctions printed out according to Diagnostic Trouble Code
(DTC) table page 01
-26
.
- After repairing the malfunctions, check DTC memory again to erase
any malfunctions that may have been stored (e.g. by disconnecting
connectors).
- Stop engine (switch ignition off) and start again.
- Test drive for at least 10 minutes.
- Carry out Automatic Test Sequence by inserting address word 00.
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01-16
Diagnostic Trouble Code (DTC) overview

Notes:

The Diagnostic Trouble Code (DTC) overview is organized according to SAE and VAG trouble codes.
Diagnostic Trouble Codes (DTC) for which the MIL is not switched on by the engine control module after a malfunction is
recognized are identified with the MIL switching condition "off."
Diagnostic Trouble Codes (DTC) for which the MIL is switched on by the engine control module immediately after a
malfunction is recognized are identified with the MIL switching condition "immediately."
Diagnostic Trouble Codes (DTC) for which the MIL is not switched on until the malfunction is recognized after taking 2
trips (FTP 72) are identified with the MIL switching condition "2 Trips."
Always repair the malfunctions with the MIL switching condition "immediately" first, and then the malfunctions with the
switching condition "2 Trips."
Diagnostic Trouble Code
(DTC) Malfunction text
MIL switching
condition
SAE
VAG
P0102 16486 Mass or Volume Air Flow Circuit Low Input immediately
P0103 16487 Mass or Volume Air Flow Circuit High Input immediately
P0116 16500 Engine Coolant Temperature Circuit Range/Performance
Problem immediately
P0117 16501 Engine Coolant Temperature Circuit Low Input immediately
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P0118 16502 Engine Coolant Temperature Circuit High Input immediately
P0120 16504 Throttle Position Sensor A Circuit Malfunction immediately
P0121 16505 Throttle Position Sensor A Circuit Range/Performance
Problem immediately
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yp
e=re
pair&id=AUDI.B5.FU01.01.1