ignition AUDI A4 1996 B5 / 1.G AFC Engine On Board Diagnostic Multiport Fuel Injection User Guide

01-30

Output on GST and/or
on VAG 1551 scan tool
Possible malfunction cause

Malfunction repair
P0117 / 16501
Engine Coolant
Temperature Circuit
Low Input Harness connector on Engine Coolant
Temperature (ECT) sensor -G62- loose or
corroded due to dampness in the harness
connector

- Check harness connector for tight fit and
contact corrosion, if necessary reconnect
and/or clean, installation location page 28
-7

Malfunction cause found: Yes
No

- Erase DTC memory, test drive, after test
drive check DTC memory again
MIL Status:
MIL lights up
immediately Wiring connection to Engine Coolant
Temperature (ECT) sensor -G62- faulty, or
sensor -G62- faulty

- Engine Coolant Temperature (ECT)
sensor -G62-, checking page 28
-25


Malfunction cause found: Yes
No

- Erase DTC memory, test drive, after test
drive check DTC memory again
For troubleshooting
Display groups 000,
001
Engine Control Module (ECM) -J192-
faulty

- Replace and code engine control module
page 01
-265
erase DTC memory and
test drive check DTC memory
Notes:
The malfunction "P0117 / 16501" is set as soon as the signal voltage drops below 0.10 volts for longer than 1 sec when
ignition is switched on (corresponds to a coolant temperature over 200 C (392 F).
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01-31

Output on GST and/or
on VAG 1551 scan tool
Possible malfunction cause

Malfunction repair
P0118 / 16502
Engine Coolant
Temperature Circuit
High Input Harness connector on Engine Coolant
Temperature (ECT) sensor -G62- loose or
corroded due to moisture in the harness
connector

- Check harness connector for tight fit and
contact corrosion, if necessary reconnect
and/or clean, installation location page 28
-7

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check
DTC memory again
MIL Status:
MIL lights up
immediately Wiring connection to Engine Coolant
Temperature (ECT) sensor -G62- faulty, or
sensor -G62- faulty

- Check Engine Coolant Temperature
(ECT) sensor -G62- page 28
-25


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check
DTC memory again
For troubleshooting
Display groups 000,
001
Engine Control Module (ECM) -J192-
faulty

- Replace and code engine control module
page 01
-265
erase DTC memory and
test drive check DTC memory
Notes:
The malfunction "P0118 / 16502" is set as soon as the signal voltage is over 4.98 volts for longer than 1 sec with ignition on
(corresponds to a coolant temperature below -50 C (-58 F)).
Pa
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jection
(MFI
)
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play?action=Goto&t
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01-54


Malfunction in spark plug(s) or ignition cable(s)
in bank 1

- Spark harness connector loose or faulty
- Check ignition cable for damage (e.g. cracks, traces of burns,
worn places)
- Check face side of spark plug

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Malfunction in the fuel injectors in bank 1
because of
- Resistance in fuel injector connectors
- Fuel injector dirty, faulty or has carbon deposits

- Check harness connector on fuel injector for tight fit
- Check fuel injection quantity and for leaks in fuel injectors
page 24
-33


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Intake valves have carbon deposits

- Check intake valves for carbon deposits, if necessary clean
valves

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Continue troubleshooting per Diagnostic Trouble Code (DTC) table page 01
-60

Pa
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jection
(MFI
)
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

01-58


Malfunction on spark plug(s) or ignition cable(s)
of Bank 1

- Spark harness connector loose or faulty check- Check ignition cable for damage (e.g. cracks, traces of
burns, worn places)
- Check face side of spark plugs

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Malfunction in the fuel injectors in Bank 2
because of
- Resistance in the fuel injector connectors
- Fuel injector that is dirty, faulty or has carbon
deposits

- Check harness connector on fuel injector for tight fit
- Check fuel injection quantity and for leaks page 24
-33

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Intake valves have carbon deposits

- Check intake valves for carbon deposits, if necessary clean
valves

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Continue Troubleshooting per Diagnostic Trouble Code (DTC) table page 01
-16

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jection
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01-63


Has combustion misfiring only been recognized on one
or two cylinders (2/4 or 3/5 or 1/6)?
No
Yes

- Spark harness connector loose or faulty check- Check ignition cable for damage (e.g. cracks, traces
of burns, worn places)
- Check face side of spark plug
- Fuel injector of the cylinder faulty; check fuel injector
page 24
-29


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC
memory again

Has combustion misfiring occurred on two cylinders
(2/4 or 3/5 or 1/6)?
No Yes

- Common ignition coil of both affected cylinders
faulty, check ignition coil page 28
-16


Malfunction cause found: Yes
No
Continued next page

- Erase DTC memory, test drive and check DTC
memory
Pa
ge 87 of 366 On Board Dia
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(OBD
) - Multi
port Fuel In
jection
(MFI
)
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

01-66


Has combustion misfiring been recognized on only
one or two cylinders (2/4 or 3/5 or 1/6)?
No
Yes

- Spark harness connector loose or faulty check- Check ignition cable for damage (e.g. cracks, traces
of burns, worn places)
- Check face side of spark plug
- Fuel injector of the cylinder faulty Check fuel
injector page 24
-29


Malfunction cause found: Yes
No


- Erase DTC memory, test drive and check DTC
memory again

Has misfiring occurred on two cylinders (2/4 or 3/5 or
1/6)?
No Yes

- Common ignition coil for the two cylinders affected
faulty, check ignition coil page 28
-16


Malfunction cause found: Yes
No
Continued next page

- Erase DTC memory, test drive and check DTC
memory
Pa
ge 90 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

01-68

Output on GST and/or
on VAG 1551 scan tool Possible malfunction cause

Malfunction repair
P0322 / 16706
Ignition/Distributor Engine
Speed Input Circuit No
Signal Malfunction P1339 / 17747
"Crankshaft Pos./Engine Speed
Sensors Cross connected" also in
DTC memory
No
Yes

- 3-pin harness connector on Crankshaft Position
(CKP) sensor -G4- and engine speed (RPM) sensor
-G28- transposed disconnect both connectors and
connect correctly; installation location page 28
-7

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC
memory again
MIL Status:
MIL lights up
immediately
Harness connector for engine
speed (RPM) sensor -G28- loose
or corroded due to moisture in the
harness connector

- Check harness connector for tight fit and contact
corrosion, if necessary reconnect and/or clean,
installation page 28
-7

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC
memory again

Holding socket for engine
speed (RPM) sensor -G28- loose
or -G28- incorrectly adjusted

- Check mounting
- Adjust engine speed bracket page 28
-23

Malfunction cause found: Yes
No
Continued next page

- Erase DTC memory, test drive and check DTC
memory again
Pa
ge 92 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

01-69


Metal chips on engine speed (RPM) sensor -G28- or
distance from the engine speed (RPM) sensor -G28- to the
flywheel ring greater than 1.2 mm (0.049 in.)

- Remove engine speed (RPM) sensor -G28-,
check for contamination, clean if necessary

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC
memory again

Wiring connection to engine speed (RPM) sensor -G28-
faulty or sensor -G28- faulty

- Check and adjust engine speed (RPM) sensor -
G28- page 28
-21


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC
memory again

Engine Control Module (ECM) -J192- faulty

- Replace and code engine control module
page 01
-265
erase DTC memory and test drive
check DTC memory
Note:
If the malfunction "P0322 / 16706" is recognized during engine start, no ignition or fuel injection occurs.
Pa
ge 93 of 366 On Board Dia
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(OBD
) - Multi
port Fuel In
jection
(MFI
)
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p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

01-71


Wiring connection to Knock Sensor (KS) 1 -
G61- faulty, or sensor -G61- faulty

- Check knock sensor 1 -G61- page 28
-29

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory again

Engine Control Module (ECM) -J192- faulty

- Replace and code engine control module page 01
-265

erase DTC memory and test drive check DTC memory
Note:
The malfunction "P0327 / 16711" is set if the output voltage of the knock sensor is too low (below 0.2 V) (coolant temperature
over 20 C (68 F)/ engine speed greater than 3500 RPM and engine load greater than 16%). The ignition angle is then
retarded by 12 crankshaft in the knocking areas of the map (engine load greater than 40%).
Pa
ge 96 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

01-73


Wiring connection to Knock Sensor (KS) 2 -
G66- faulty or sensor -G66- faulty

- Check knock sensor 2 -G66- page 28
-29

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after test drive, check DTC
memory again

Engine Control Module (ECM) -J192- faulty

- Replace and code engine control module page 01
-265

erase DTC memory and test drive check DTC memory
Note:
The malfunction "P0332 / 16716" is set when the knock sensor output voltage is too low (under 0.2 V) (coolant temperature
over 20 C (68 F) / engine speed greater than 3500 RPM and engine load greater than 16%). The ignition angle is then
retarded by 12 crankshaft in the knocking ranges of the map (engine load greater than 40%).
Pa
ge 99 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1