f125 AUDI A8 1999 D2 / 1.G 01V Transmission Electrical Testing User Guide

21 + 54
22 + 54
infinite
1)

1) Switch VAG1526 to highest resistance ( ) measuring range. 2) Permissible tolerance: 0.1 K 3) Pin 28 at the control module is vacant for vehicles with 10-pin connector of multi-function switch -F125-.
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Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 00; Code letters, enginer/transmission allocation, ratios,
equipment

3) Pin 28 at the control module is vacant for vehicles with 10-pin connector of multi-function switch -F125-.
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01-294

Resistance measurement: switch multimeter to 2 M measuring range
Test
step VAG
1598/20
sockets Test of
Test conditions
- Additional stepsSpecified
value Corrective action
22 A) 35 + 28
1)
35 + 34
35 + 55
35 + 26 Wiring to ECM (fuel
consumption/load signal)
Ignition
switched off
- ECM
disconnected more than
40 K
- Check wiring per wiring diagram.
- Disconnect connections to other
components which also receive this
signal and repeat measurement.

35 + xx
2)
less than 1.5


- Check these components for short
circuit if necessary (e.g. on-board
computer).
Change
measuring range
to 20 V Measure
Voltage Repair Manual, Electrical Equipment, Repair Group 01


35 + 34
35 + 28
1)
Ignition
switched on
- ECM
disconnected Approx. 5 V
1) Pin 28 at the control module is vacant for vehicles with 10-pin connector of multi-function switch -F125-.
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Electrical Wiring Diagrams & Component Locations binder A) Signal is transmitted to Transmission Control Module (TCM) via the Engine Control Module (ECM). Test is only for vehicles
without CAN-Bus

Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 00; Code letters, aggregate allocation, ratios, equipment

3) Pin 28 at the control module is vacant for vehicles with 10-pin connector of multi-function switch -F125-.
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Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 00; Code letters, aggregate allocation, ratios,
equipment

3) Pin 28 at the control module is vacant for vehicles with 10-pin connector of multi-function switch -F125-.
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A) Testing only for vehicles with a CAN-bus

Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 00; Code letters, engine/transmission applications, ratios, equipment

3) Pin 28 at the control module is vacant for vehicles with 10-pin connector of multi-function switch -F125-.
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01-307

Multi-function Transmission Range (TR)
switch -F125- (8-pin connector), testing

1. Function test

- Release spring catch securing 8-pin connector -2- to connector on
wiring to multi-function TR switch.
- Unclip connector to multi-function TR switch from retainer or remove
retainer together with connector from transmission to gain better
access to the pins in the connector.

- Pin assignment for 8 - pin connector of Multi-function (TR) switch -
F125-
- Use multi-meter VAG 1526A or Vehicle Diagnosis, Measuring and
Information System VAS 5051.
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01-308
Transmission with Multi-function Transmission Range (TR) switch -F125- with 8 - pin connector, checking
Resistance measurement: switch multimeter to 2 M measuring range
Test
step Connector
pins at F 125 Test of
Test conditions
- Additional stepsSpecified
value Corrective action
1 1 + 7
1 + 6 Multi-function
TR switch -
F126- Ignition switched
off
- Selector lever in P,
R, N, D, 4, 3, and 2 infinitive
1)
- Check connector on multi-function
TR switch for corrosion, water ingress
or loose connection

1 + 2
Ignition switched
off
- Selector lever in P,
N, and D smaller than
2
Repair Manual, 5 Spd. Automatic
Transmission 01V, Repair Group 37
- If necessary adjust selector lever
cable

- Selector lever in R,
4, 3, and 2 infinitive
1)

1 + 3

Ignition switched
off
- Selector lever in R,
N, and 4 smaller than
2

Continue


Ignition switched
off infinitive
1)
Repair Manual, 5 Spd. Automatic - Replace multi-function TR switch
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01-309
Transmission with Multi-function Transmission Range (TR) switch -F125- with 8 - pin connector, checking
Resistance measurement: switch multimeter to 2 M measuring range
Test step
Connector pins
at F 125 Test
of
Test conditions
- Additional stepsSpecified
value Corrective action
Continued

1 1 + 4 Ignition switched
off
- Selector lever in N,
D, 4, and 2 infinitive
1)

- Check connector on multi-function TR
switch for corrosion, water ingress or loose
connection

1 + 5
- Selector lever in P,
R, and 3 infinitive
1)

- If necessary adjust selector lever cable

Ignition switched
off
- Selector lever in D,
4, and 3 smaller than
2
Repair Manual, 5 Spd. Automatic
Transmission 01V, Repair Group 37


1 + 8

- Selector lever in P,
R, N, and 2 infinitive
1)



Ignition switched
off
- Selector lever in Rsmaller than
2
Continue
- Selector lever in P, infinitive
- Replace multi-function TR switch
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01-310
Transmission with Multi-function Transmission Range (TR) switch -F125- with 8 - pin connector, checking
Resistance measurement: switch multimeter to 2 M measuring range
Test step
Connector
pins at F 125 Test of
Test conditions
- Additional stepsSpecified
value Corrective action
Continued
to
1 6 + 7 Part No. signal of
Multi-function TR
switch Ignition switched
off
- Selector lever in R,
D, 4, 3, and 2 infinitive
1)
Repair Manual, 5 Spd.
Automatic Transmission 01V, Repair Group 38
- Replace multi-function TR switch

Ignition switched
off
- Selector lever in P,
and N less than 2

The Part No. signal for the Engine
Control Module (ECM) is being
checked
1) Switch VAG1526 to highest resistance ( ) measuring range. Note:

If function check was OK, check voltage supply to Multi-function TR switch -F125- page 01
-311

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