AUDI A6 1998 C5 / 2.G AEB Engine Technical Data Spark Plug
Manufacturer: AUDI, Model Year: 1998, Model line: A6, Model: AUDI A6 1998 C5 / 2.GPages: 22, PDF Size: 0.09 MB
Page 11 of 22
28-8
Continuation
- Disconnect 3-pin connector from Knock Sensor
(KS) 1 -G61-.
If resistance is OK (no continuity): - Connect multimeter US 1119 (Fluke 83 or equivalent) to measure
resistance between connector terminals, using adapter cables from VW
1594 connector test kit.
Connector terminal 1 to terminal 2
Connector terminal 1 to terminal 3
Connector terminal 2 to terminal 3
Specified value:
- Connect VAG 1598/22 test box to Motronic ECM harness connector
Page 01
-56
.
- Check wiring for open circuit between ECM/test box and 3-pin harness
connector, according to wiring diagram.
Connector terminal 1 to ECM/test box socket 68
Connector terminal 2 to ECM/test box socket 67
Connector terminal 3 to ECM/test box socket 2
Specified value: max. 1.5
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Page 12 of 22
28-9
- Check wiring for short circuits between terminals
of 3-pin connector, and between connector and
ECM/test box.
Connector terminal 2 to ECM/test box
socket 68
Connector terminal 3 to ECM/test box
socket 68
Connector terminal 3 to ECM/test box
socket 67
Specified value:
If the wiring is OK:
- Loosen knock sensor and re-tighten to 20 Nm
(15 ft lb).
If the malfunction still exists (stored in DTC
memory):
- Replace Knock Sensor (KS) 1 -G61-.
-
Check readiness code Page 01
-59
. If
Diagnostic Trouble Code (DTC) memory has
been erased, or ECM was disconnected,
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Page 13 of 22
generate new readiness code Page 01
-62
.
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Page 14 of 22
28-10
- Disconnect 3-pin connector from Knock Sensor
(KS) 2 -G66-.
If resistance is OK (no continuity): - Connect multimeter US 1119 (Fluke 83 or equivalent) to measure
resistance between connector terminals, using adapter cables from VW
1594 connector test kit.
Connector terminal 1 to terminal 2
Connector terminal 1 to terminal 3
Connector terminal 2 to terminal 3
Specified value:
- Connect VAG 1598/22 test box to Motronic ECM harness connector
Page 01
-56
.
- Check wiring for open circuit between ECM/test box and 3-pin harness
connector, according to wiring diagram.
Connector terminal 1 to ECM/test box socket 60
Connector terminal 2 to ECM/test box socket 67
Connector terminal 3 to ECM/test box socket 2
Specified value: max. 1.5
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Page 15 of 22
28-11
- Check wiring for short circuits between terminals
of 3-pin connector, and between connector and
ECM/test box.
Connector terminal 2 to ECM/test box
socket 60
Connector terminal 3 to ECM/test box
socket 60
Connector terminal 3 to ECM/test box
socket 67
Specified value:
If the wiring is OK:
- Loosen knock sensor and re-tighten to 20 Nm
(15 ft lb).
If the malfunction still exists (stored in DTC
memory):
- Replace Knock Sensor (KS) 2 -G66-.
-
Check readiness code Page 01
-59
. If
Diagnostic Trouble Code (DTC) memory has
been erased, or ECM was disconnected,
Pa
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Page 16 of 22
generate new readiness code Page 01
-62
.
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Page 17 of 22
28-12
Misfiring recognition, checking
Required special tools and test equipment
VAG 1551 or VAG 1552 Scan Tool (ST) with
VAG 1551/3 adapter cable
Checking
- Connect VAG 1551/1552 Scan Tool (ST) and
press buttons -0- and -1- to insert "Engine
Electronics" address word 01 (engine running at
idle) Page 01
-7 .
Rapid data transfer
HELP
Select function XX
Indicated on display
- Press buttons -0- and -8- to select "Read Measuring Value Block"
function 08, and press -Q- button to confirm input.
Read Measuring Value Block
HELP
Input displa
y group number XXX
Indicated on display
- Press buttons -0-, -1- and -4- to input display group number 14, and
press -Q- button to confirm input.
Read Measuring Value Block 14 1 2 3 4
Indicated on display (1-4 display groups)
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Page 18 of 22
28-13
- Compare displayed values with specified values
for misfire recognition (display fields 3-4):
Display groups
1 2 3 4
Display group 14: Misfire recognition
Display xxx RPM xx.xx ms xxx activated
deact
Indicates Engine speed
(in 40 RPM steps) Engine load Misfire harmful to emissions (total) Misfire recognition status
Range 0-6800 RPM 0.00-8.50 ms --- ---
Specified value 760-960 RPM 0.5-1.5 ms 20 activated
--- --- If displayed values are NOT OK Page 28
-14
If displayed values are OK:
- Check readiness code Page 01
-59
. If
Diagnostic Trouble Code (DTC) memory has
been erased, or ECM was disconnected,
generate new readiness code Page 01
-62
.
-
Press button to advance program
sequence.
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Page 19 of 22
- Press buttons -0- and -6- to select "End Output"
function 06, and press -Q- button to confirm
input.
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Page 20 of 22
28-14
If displayed values are NOT OK:
- Press -C- button.
- Press buttons -0-, -1- and -5- to input display
group number 15, and press -Q- button to
confirm input. Read Measuring Value Block 15 1 2 3 4
Indicated on display (1-4 display groups) - Compare displayed values with specified values for misfire recognition
(display fields 1-4):
Display groups
1 2 3 4
Display group 15: Misfire recognition
Display xxx xxx xxx activated
deact
Indicates Misfire harmful to
emissions, Cyl. 1 Misfire harmful to
emissions, Cyl. 2 Misfire harmful to
emissions, Cyl. 3 Misfire recognition
status
Range 500 500 500 ---
Specified
value 0-5 0-5 0-5 activated
If displayed values are NOT OK Page 28
-16
, Evaluating display groups 15 and 16
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