Multi-Function Transmission Range (TR) Switch -F125- (A/T 01V), Checking

Multi-Function Transmission Range (TR) Switch -F125- (Automatic Transmission 01V), Checking

Test requirements:
- Selector lever cable adjusted correctly

Test sequence







- Disengage mounting components (arrows) and remove sound insulation.







- Disconnect harness connector (arrow) of Multi-Function Transmission Range (TR) Switch -F125- at left front on transmission.

1. Function test
- Ignition switched off.







- Connect multimeter to terminals of harness connector for Multi-Function Transmission Range (TR) Switch -F125- for resistance measurement as follows:







2. Checking voltage supply of multi-function transmission range switch







- Connect multimeter to terminals of harness connector for Multi-Function Transmission Range (TR) Switch -F125- for voltage measurement as follows:
- Switch ignition on.

Harness connector Terminal Specified value
1 + 10 approx. battery voltage
7 + 10 approx. battery voltage

If a specified value is not obtained:
- Repair open circuit in wiring or short circuit if necessary.

3. Checking wire connections between harness connector for multi-function transmission range switch and Transmission Control Module (TCM)
- Ignition switched off.

- Connect V.A.G 1598/20 test box to wiring harness of Transmission Control Module (TCM).







- Connect multimeter between terminals of 10-pin harness connector and sockets of test box e.g. V.A.G 1598/20 for resistance measurement as indicated in the following table.

- Specified value: respectively less than 1.5 Ohms

Harness connector Terminal Test box Socket
1 54 or 55
2 36
3 8
4 37
5 9

NOTE:
- If results deviate from specified value, repair open circuit in wiring according to wiring diagram and check harness connector for contact corrosion, ingress of water and leaks.
- If this test of the wire connection resulted in no deviations, Multi-Function Transmission Range (TR) Switch -F125- must be replaced.