AUDI A6 1996 C5 / 2.G AEB Engine Technical Data Spark Plug

28-1
Technical data, spark plugs Engine code
AEB

Engine idle RPM

Idle RPM cannot be adjusted, is corrected by idle air control 820-900 RPM
RPM limit
Operates by shutting off fuel injectors approx. 6500 RPM
Ignition timing
Ignition timing cannot be adjusted, is monitored by Engine Control Module (ECM)
Firing order 1-3-4-2
Spark plugs Tightening torque 30 Nm (22 ft lb)
Part No.
(Always check with your Parts Department for correct part numbers) 101 000 033 AB (NGK)
101 000 051 AB (BOSCH)

Manufacturer's codes
(if applicable) BKUR 7 ET (NGK)
F6 LTCR (BOSCH)


Electrode gap - mm 0.7 to 0.9 mm

Maintenance interval See Owner's Manual
Spark plug connector resistance
approx. 2 k
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28-2

Camshaft Position (CMP) sensor -G40-,
checking


Required special tools and test equipment

VAG 1598/22 test box
Multimeter US 1119 (Fluke 83 or equivalent)
VW 1594 connector test kit
Wiring diagrams

Checking

- Disconnect 3-pin connector from Camshaft
Position -G40- sensor.

- Connect multimeter US 1119 (Fluke 83 or equivalent) to measure
voltage across CMP connector terminals 1 (B+) and 3 (Ground), using
adapter cables from VW 1594 connector test kit.
- Switch ignition on.
- Measure voltage between terminals 1 and 3.
Specified value: 4.5 volts minimum
- Switch ignition off.
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28-3
If voltage is OK:

- 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 11
Connector terminal 2 to ECM/test box socket 76
Connector terminal 3 to ECM/test box socket 67
Specified value: max. 1.5
- Check wiring for short circuit between ECM/test box and 3-pin harness
connector, according to wiring diagram.

Connector terminal 2 to ECM/test box socket 11
Connector terminal 3 to ECM/test box socket 11
Connector terminal 3 to ECM/test box socket 76
Specified value:
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28-4
If wiring is OK (and voltage across terminals 1
and 3 is OK):

- Replace Camshaft Position (CMP) sensor.
If wiring is OK (but still no voltage across
terminals 1 and 3 :

- Replace Motronic ECM -J220- Page 01
-57
.

- Carry out adaptation of throttle valve control
module to ECM Page 24
-119
.

- 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
.
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28-5

Knock sensor and knock sensor
system, checking


Required special tools and test equipment

VAG 1551/1552 Scan Tool (ST) with adapter
cable VAG 1551/3
VAG 1598/22 test box
Multimeter US 1119 (Fluke 83 or equivalent)
VW 1594 connector test kit
Wiring diagrams

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.
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Read Measurin
g Value Block
HELP
Input display group number XXX

Indicated on display
- Press buttons -0-, -2- and -0- to input display group number 20, and
press -Q- button to confirm input.
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28-6

Read Measuring Value Block 20 1 2 3 4

Indicated on display (1-4 display groups)
Note:
The test must be carried out during a road test because the knock sensor
system is only active as of a certain engine speed.
WARNING!
A second technician is required to operate the VAG 1551 scan tool
during the road test. - Road test car and compare display with specified values for knock
sensor system in display field 1-4.

Display groups

1 2 3 4
Display group 20: Knock sensor system
Display
xx.x
xx.x
xx.x
xx.x
Indicates Timing correction,
cylinder 1 Timing correction,
cylinder 2 Timing correction
cylinder 3 Timing correction,
cylinder 4
Range
0.0 -15.0
(crankshaft)
0.0 -15.0
(crankshaft)
0.0 -15.0
(crankshaft)
0.0 -15.0
(crankshaft)
Specified value
0.0 -10.0
(crankshaft)
0.0 -10.0
(crankshaft)
0.0 -10.0
(crankshaft)
0.0 -10.0
(crankshaft)
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If displayed values are NOT OK Page 28
-7 , Evaluating display group 20
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28-7
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.
- Press buttons -0- and -6- to select "End Output"
function 06, and press -Q- button to confirm
input.
Evaluating display group 20 Display group: 20
Display fields: 1-4
Possible cause

Correcting action

All cylinders retarded more
than 10 (crankshaft)
Knock sensor faulty- Continuation Page 28
-8

Connector corroded
Knock sensor
incorrectly torqued - Loosen knock sensor and re-tighten to 20 Nm (15 ft lb)
Components loose
on engine - Tighten components
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Poor fuel quality- Change fuel
One cylinder reading is very
different from the others Connector corroded- Continuation Page 28
-8

Engine failure- Check compression Repair Manual, 1.8 Liter 4
-Cyl. 5V
Turbo Engine Mechanical, Engine Code(s): AEB, ATW, Repair Group 15


Components loose
on engine - Tighten components
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