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Self-diagnosis function > < Dismantling and assembling sequence

Leon Mk1

  • Automatic gearbox
  • Automatic gearbox 099 4WD -self-diagnosis-
  • Self diagnosis, V.A.G Inspection Service
  • Gearbox: Electrical test

Automatic gearbox 099 4WD -self-diagnosis-
Gearbox: Electrical test
Electrical check
 
N37-0253

The control unit is located in engine compartment, left Page 01-15, Fig. 1.

  • ‒ → Switch ignition off, release multi-pin connector in direction of arrow, and pull off control unit.
 
N37-0139
  • ‒ → Fit test box V.A.G 1598/18 onto multi-pin connector (1) and lock, in direction of arrow (2).

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

  • ‒ Before connecting the test leads the correct measuring range on tester must be adjusted. Otherwise the electronic components can be destroyed !
  • ◆ Use the hand multimeter V.A.G 1526 with auxiliary cables from V.A.G 1594 for testing.
  • ◆ The specified values are valid for an ambient temperature from 0 °C...40 °C.
  • ◆ If the readings obtained differ from the specified values, determine fault on the basis of the current flow diagram.
  • ◆ If the readings obtained differ only slightly from the specified values, clean sockets and connectors of the testers and test leads and repeat test. Before replacing the particular components, test wiring and connections and, particularly if specified values are below 10 ω, repeat resistance measurement on component.
 
N37-0267

After electrical checks

  • ‒ → Fit multi-pin connector on control unit -J217- and lock.

When fitting ensure that the guides (arrows) are engaged on control unit pins.

Control unit -J217- multi-pin connector (68 pin) assignment (sockets on V.A.G 1598/18)

1-

Earth (terminal 31)

20-

Road speed sender -G68-

2-

Vacant

21-

Gearbox speed sender -G38-

3-

Vacant

22-

Solenoid valve 6 -N93- supply voltage

4-

Vacant

23-

Supply voltage (terminal 15)

5-

Vacant

24-

Diagnosis K-wire

6-

Gearbox oil temperature (ATF) sender -G93-

25-

Vacant

7-

Vacant

26-

Vacant

8-

Vacant

27-

Vacant

9-

Solenoid valve 3 -N90-

28-

Vacant

10-

Solenoid valve 7 -N94-

29-

Selector lever lock solenoid -N110-

11-

Park/neutral signal

30-

Vacant

12-

Kickdown for air conditioner

31-

Vacant

13-

Ignition timing influence

32-

Vacant

14-

Vacant

33-

Vacant

15-

Brake light switch -F- signal voltage

34-

Vacant

16-

Kickdown switch -F8-

35-

Vacant

17-

Vacant

36-

Diagnosis L-wire

18-

Multi-function switch -F125-

37-

Vacant

19-

TD (revolution) signal

38-

Vacant

39-

Vacant

54-

Solenoid valve 2 -N89-

40-

Multi-function switch -F125-

55-

Solenoid valve 1 -N88-

41-

Throttle valve potentiometer -G69- signal1)

56-

Solenoid valve 5 -N92-

42-

Diesel engine revolution sensor (screening)

57-

Selector lever display

43-

Road speed sender -G68- (screening)

58-

Solenoid valve 6 -N93-

44-

Gearbox speed sender -G38- (screening)

59-

Vacant

45-

Supply voltage (terminal 30)

60-

Cruise control system (input terminal15)
(vacant on vehicles from 5.95)

46-

Vacant

61-

Cruise control system (output)

47-

Solenoid valve 4 -N91-

62-

Multi-function switch -F125-

48-

Freewheel lock valve -N87-

63-

Multi-function switch -F125-

49-

Vacant

64-

Engine speed sender -G28- (Diesel engine)

50-

Vacant

65-

Road speed sender -G68-

51-

Vacant

66-

Gearbox speed sender -G38-

52-

Vacant

67-

Solenoid valves voltage supply

53-

Vacant

68-

Terminal 30 (output)

1)    Signal (contact 41) directed via engine control unit to gearbox control unit and can only be checked in "Reading measured value block" .

List of test steps (multi-pin connector with 68 pins)

    Only perform test steps for the relevant component as listed in fault finding table and read measured value block.

Component checked

Component checked

Supply voltage from control unit -J217-

- Perform test step 1

Solenoid valve 7 -N94-

- Perform test step 10

Selector lever lock solenoid -N110-

- Perform test step 2 and 11

Kickdown switch -F8-

- Perform test step 12

Brake light switch -F-

- Perform test step 3

Gearbox oil temperature sender -G93- (ATF)

- Perform test step 13

Solenoid valve 1 -N88-

- Perform test step 4

Road speed sender -G68-

- Perform test step 14

Solenoid valve 2 -N89-

- Perform test step 5

Gearbox speed sender -G38-

- Perform test step 15

Solenoid valve 3 -N90-

- Perform test step 6

Solenoid valve 4 -N91-

- Perform test step 7

Solenoid valve 5 -N92-

- Perform test step 8

Solenoid valve 6 -N93-

- Perform test step 9

  • Automatic gearbox
  • Automatic gearbox 099 4WD -self-diagnosis-
  • Self diagnosis, V.A.G Inspection Service
  • Gearbox: Electrical test

Self-diagnosis function > < Dismantling and assembling sequence