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Test table > < Testing "two-wire bus system"

A4 Mk1

Automatic Gearbox 01V Self-diagnosis
Electrical check
Electrical check
 
G01-0003

The following special tools and testers are required for this work:

  • ◆ Portable multimeter V.A.G 1526 A or vehicle diagnostic, testing and information system VAS 5051 with test leads VAS 5051/7
  • ◆ V.A.G 1598/20 Test box
  • ◆ V.A.G 1594 A Adapter set

Additional information material required

  • ◆ Workshop Manual Audi A4, Automatic Gearbox 01V Front and Four-wheel Drive
  • ◆ Binder: "Current Flow Diagrams, Electrical Fault-finding and Fitting Locations"

Notes:

  • ◆ Use is to be made of portable multimeter V.A.G 1526A for testing. The tables indicate the measurement modes to be set in each case before taking the corresponding measurements.
  • ◆ The specifications listed apply to an ambient temperature of 0 °C to 40 °C.
  • ◆ Use current flow diagram to establish fault if readings do not match specifications.
  • ◆ If measured values only differ slightly from specifications, clean sockets and connectors of testers and test leads and repeat test. Check wiring and connections before replacing components. Repeat resistance measurement at component, particularly in the case of specifications below 10 ω.
  • ◆ Use test box V.A.G 1598/20 for connection of testers.
  • ◆ Contact numbers of connector coincide with socket numbers of test box V.A.G 1598/20 .
  • ◆ Checking of multi-function switch does not require connection of test box V.A.G 1598/20, as checking is first performed at connector of multi-function switch => Page 01-314.
Attention:
So as not to destroy electronic components, select required measuring range on measuring instrument before connecting test leads.

Test requirements

  • ● Battery voltage OK
  • ● Fuses for gearbox control unit OK

=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder

  • ● Fuses for component to be checked OK
  • Fuse box is located behind a cover on the side of the dash panel insert.
  • ● Earth connections OK
  • Check battery earth strap and earth strap between body and gearbox.
  • Check earth connections for gearbox control unit.

=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
 
V37-1037
  • ‒ → For all test steps, switch off ignition, unplug multi-pin connector from automatic gearbox control unit -J217 (control unit is located in front of right seat beneath cover in footwell => Page 01-6) and connect test box V.A.G 1598/20 to wiring harness connector.
  • ‒ If readings do not match specifications, perform "Measures to be taken if reading does not match specification" as listed on right of test table.
  • ‒ Perform all measures listed in column "Measures to be taken if reading does not match specification".
  • ‒ Only perform test steps recommended in fault table (specific testing).

Multi-pin connector (88-pin) of automatic gearbox control unit -J217 (sockets on V.A.G 1598/20)

1-

Solenoid valve 5 -N92

18-

Kickdown switch -F8 (not with electronic throttle
and V6-TDI)

2-

Selector lever lock solenoid -N110

19-

Gearshift by ABS control unit

3-

Not used

20-

Engine intervention (ignition point adjustment) 1)

4-

Solenoid valve 7 -N94

21-

Gearbox oil temperature sender -G93 (ATF)

5-

Solenoid valve 4 -N91

22-

Gearbox oil temperature sender -G93 (ATF)

6-

Earth for loads (terminal 31)

23-

Gearbox input speed sender -G182 (screen)

7-

Not used

24-

Not used

8-

Multi-function switch -F125 L2

25-

Selector lever position indicator (not for highline dash panel insert)

9-

Multi-function switch -F125 L4; supply voltage for cruise control system

26-

Supply voltage (terminal 30), with or without fuse depending on design status => Current flow diagram

10-

Brake light switch -F (not with electronic throttle
and V6-TDI)

27-

Kickdown for air conditioner 1)

11-

Not used

28-

Earth for electronics (terminal 31) 4)

12-

Not used

29-

Solenoid valve 6 -N93

13-

Tiptronic recognition

30-

Solenoid valve 1 -N88

14-

Gearbox speed sender -G38

31-

Not used

15-

Gearbox speed sender -G38 (screen)

32-

Solenoid valve 3 -N90

16-

Gearbox input speed sender -G182

33-

Solenoid valve 2 -N89

17-

Signal for fault display (OBD II requirement) 1) 2)

34-

Earth for loads (terminal 31)

Notes and footnotes on assignment of multi-pin connector => Page 01-287

35-

Fuel consumption signal (engine actual torque) 1)

54-

Supply voltage (terminal 15)

36-

Multi-function switch -F125 L1

55-

Supply voltage (terminal 15)

37-

Multi-function switch -F125 L3

56-

Not used

38-

Not used

-

39-

Not used

-

40-

Engine speed signal 1)

-

41-

Throttle valve value (load signal) 1)

-

42-

Gearbox speed sender -G38

-

43-

Not used

-

44-

Gearbox input speed sender -G182

-

Sockets 57 - 83 not used

45-

Not used

-

46-

Tiptronic change-up

-

47-

Tiptronic change-down

-

48-

Not used

-

49-

Not used

84-

Not used

50-

Not used

85-

CAN bus 3)

51-

Change-up/change-down signal (for engine
intervention) 1)

86-

CAN bus 3)

52-

Supply voltage for solenoid valves

87-

Not used

53-

Supply voltage for solenoid valves

88-

Diagnosis K-wire

Notes and footnotes on assignment of multi-pin connector => Page 01-287

Notes and footnotes on assignment of multi-pin connector

1)    Vehicles with no CAN bus only

=> Automatic Gearbox 01V Front and Four-Wheel Drive; Repair Group 00; Code letters, assignment of mechanical units, transmission ratios, features

2)    Signal is transmitted via engine control unit to gearbox control unit and can only be checked in measured value block => Page 01-194.

3)    Vehicles with CAN bus only. For further information on CAN bus, refer to => Page 01-271

=> Automatic Gearbox 01V Front and Four-Wheel Drive; Repair Group 00; Code letters, assignment of mechanical units, transmission ratios, features

4)    Control-unit pin 28 is not used on vehicles with 10-pin connector for multi-function switch -F125.

List of test steps (88-pin connector)

    Only perform test steps from fault table and measured value block listed according to component.

Component checked

Component checked

Automatic gearbox control unit -J217 supply voltage

- Perform test steps 1
and 7

Solenoid valve 5 -N92
(pressure control valve 2 -N216)

- Perform test steps 13
and 8

Selector lever lock solenoid -N110

- Perform test steps 2, 6 and 16

Solenoid valve 6 -N93
(pressure control valve 3 -N217)

- Perform test steps 14
and 8

Brake light switch -F

- Perform test step 3

Solenoid valve 7 -N94
(pressure control valve 4 -N218)

- Perform test steps 15
and 8

Supply voltage for cruise control system

- Perform test step 4

Gearbox speed sender -G38(gearbox output speed sender -G195)

- Perform test step 18

Kickdown switch -F8
(not for V6 TDI and electronic throttle)

- Perform test steps 5
and 17

Gearbox input speed sender -G182

- Perform test step 19

Multi-function switch
(driving range sensor) -F125

- Page => 01-314

Gearbox oil temperature sender -G93 (ATF)

- Perform test step 20

Solenoid valve 1 -N88

- Perform test steps 8
and 9

Wiring to engine control unit 1)

- Perform test steps 21, 22, 23, 24 and 25

Solenoid valve 2 -N89

- Perform test steps 10 and 8

Tiptronic switch -F189

- Perform test steps 26 and 27

Solenoid valve 3 -N90

- Perform test steps 11
and 8

CAN bus 2)

- Test step 28 and check bus system => Page 01-273

Solenoid valve 4 -N91
(pressure control valve 1 -N215)

- Perform test steps 12
and 8

1)    Signal is transmitted via engine control unit to gearbox control unit (checking for vehicles with no CAN bus only)

=> Automatic Gearbox 01V Front and Four-Wheel Drive; Repair Group 00; Code letters, assignment of mechanical units, transmission ratios, features

2)    Checking for vehicles with CAN bus only

=> Automatic Gearbox 01V Front and Four-Wheel Drive; Repair Group 00; Code letters, assignment of mechanical units, transmission ratios, features

Test table > < Testing "two-wire bus system"