Audi Workshop Service and Repair Manuals > A2 > Power transmission | 5-speed Manual Gearbox 085 DS Self-diagnosis | Self diagnosis, V.A.G Inspection Service | Electrical test | Connect test box V.A.G 1598/18 to electronic manual gearbox control unit J514

Test table > < Performing electrical test

Connect test boxV.A.G 1598/18 to electronic manual gearbox control unitJ514

Connect test box -V.A.G 1598/18- to electronic manual gearbox control unit -J514-

Using test box -V.A.G 1598/18- the wiring can be checked according to current flow diagram.

–	Switch off ignition.

–	Lift up floor mat in left side footwell.

–	Turn the lock mechanisms -1- anticlockwise and remove the cover plate.

–	Release multiple connector -arrow 1- and unplug from the control unit -arrow 2-.

–	Connect test box -V.A.G 1598/18- to the multiple connector -arrow 1- and lock -arrow 2-.

Caution

To prevent damage to the electronic components, the appropriate measuring range must be selected before connecting the diagnosis leads and observe the test requirements.

–	Carry out all measures listed in the column “Measures if readout does not match specification”.

–	Only carry out test steps recommended in the fault table (targeted approach).

After the electrical test:

–	Connect multiple connector to the pins of the electronic manual gearbox control unit -J514--arrow 1- and then lock -arrow 2-.

When installing, ensure that the guides are positioned on the pins of the control unit.

Note

t	For testing, use the portable multimeter -V.A.G 1526 B- with auxiliary wires from -V.A.G 1594 C- or the vehicle diagnostic, testing and information system -VAS 5051 A- with diagnosis leads -VAS 5051 A/7-.

t	The socket designations of the test box -V.A.G 1598/18- are identical to the contact designations of the electronic manual gearbox control unit -J514- in the current flow diagram.

t	Damage may be caused to the system by testing incorrectly. Apart from the connectors listed in the test table, no other bridges may be connected.

t	The specified values are valid for an ambient temperature from 0°... 40° C.

t	If the readings obtained differ from the specified values, determine fault on the basis of the current flow diagram.

t	If the measured values deviate only slightly from the specified values, clean sockets and connectors of the testers and diagnosis leads and repeat test.

t	Before replacing components, their lines and connectors must be tested. Especially with specified values under 10 Ω the resistance measurement at the component should be repeated.

Check 68-part multiple connector of electronic manual gearbox control unit -J514- (sockets on the test box -V.A.G 1598/18-)

1 -

Earth (terminal 31)

37 -

Potentiometer 1 for gear recognition -G239- signal

2 -

Earth (terminal 31)

38 -

Potentiometer 2 for gear recognition -G240- signal

3 -

CAN low signal

39 -

Switch for selector lever gate recognition -F257-

4 -

Potentiometer for selector lever, forwards/backwards -G272- (supply voltage 5 V)

40 -

Lockout switch for diesel engine -F207-

5 -

Clutch travel sender -G162- signal

41 -

Switch for selector lever Stop recognition -F259-

6 -

Not used

42 -

Not used

7 -

Not used

43 -

Gearbox speed sender -G38- (screening)

8 -

Not used

44 -

Earth for:

9 -

Load shutoff relay -J511-

t	Sender for gearbox hydraulic pressure -G270-

10 -

Not used

t	Potentiometer 1 for gear recognition -G239-

11 -

Not used

t	Potentiometer 2 for gear recognition -G240-

12 -

Starter inhibitor and reversing light relay -J226-

45 -

Supply voltage of terminal 30

13 -

Not used

46 -

Gear selector valve 2 -N285-

14 -

Sender for gearbox hydraulic pressure -G270- signal

47 -

Supply voltage of terminal 15

15 -

Brake pressure switch -F270-

48 -

Gear selector valve 4 -N287-

16 -

Door contact switch signal

49 -

Potentiometer for selector lever, forwards/backwards -G272- signal

17 -

Supply voltage 5 V (bridge to pin 30) for:

50 -

Supply voltage 5 V for clutch travel sender -G162-

t	Sender for gearbox hydraulic pressure -G270-

51 -

Engine cycle (monitoring signal for kick-down)

t	Potentiometer 1 for gear recognition -G239-

52 -

Not used

t	Potentiometer 2 for gear recognition -G240-

53 -

Gear selector valve 3 -N286-

18 -

Start prompt from ignition/starter switch (terminal 50)

54 -

Gearbox hydraulic pump relay -J510-

19 -

TD-(speed) signal

53 -

Not used

20 -

Gearbox speed sender -G38- signal

54 -

Not used

21 -

Vehicle speed signal

55 -

Not used

22 -

Gear selector valve 1 -N284-

56 -

Not used

23 -

Supply voltage for terminal 15 (bridge to pin 47)

57 -

Not used

24 -

K-wires of diagnosis

58 -

Valve for clutch actuator -N255-

25 -

CAN high signal

59 -

Reversing light switch -F4-

26 -

Not used

60 -

Not used

27 -

Potentiometer for selector lever, forwards/backwards -G272- earth

61 -

Not used

28 -

Clutch travel sender -G162- earth

62 -

Switch for selector lever N-recognition -F258-

29 -

Selector lever lock solenoid -N110-

63 -

Switch for Start/Stop mode -E262-

30 -

Jumper to pin 17

64 -

Not used

31 -

Not used

65 -

Gearbox speed sender -G38-

32 -

Valve for clutch actuator -N255-

66 -

Not used

33 -

Gear selector valve 2 -N285-

67 -

Supply voltage for:

34 -

Gear selector valve 1 -N284-

t	Gear selector valve 3 -N286-

35 -

Not used

t	Gear selector valve 4 -N287-

36 -

Not used

68 -

Supply voltage of terminal 30

Power transmission
5-speed Manual Gearbox 085 DS Self-diagnosis / Self diagnosis, V.A.G Inspection Service
Electrical test
Connect test box V.A.G 1598/18 to electronic manual gearbox control unit J514

Test table > < Performing electrical test

Audi Workshop Service and Repair Manuals

A2

Power transmission 5-speed Manual Gearbox 085 DS Self-diagnosis / Self diagnosis, V.A.G Inspection Service Electrical test Connect test box V.A.G 1598/18 to electronic manual gearbox control unit J514

Power transmission 5-speed Manual Gearbox 085 DS Self-diagnosis / Self diagnosis, V.A.G Inspection Service Electrical test Connect test box V.A.G 1598/18 to electronic manual gearbox control unit J514

Power transmission
5-speed Manual Gearbox 085 DS Self-diagnosis / Self diagnosis, V.A.G Inspection Service
Electrical test
Connect test box V.A.G 1598/18 to electronic manual gearbox control unit J514

Power transmission
5-speed Manual Gearbox 085 DS Self-diagnosis / Self diagnosis, V.A.G Inspection Service
Electrical test
Connect test box V.A.G 1598/18 to electronic manual gearbox control unit J514