Wire Connection Between Transmission Control Module (TCM) and A/T 01V, Checking

Wire Connection Between Transmission Control Module (TCM) And Automatic Transmission 01V, Checking

Test requirements:
- Ignition switched off
- Transmission at ambient temperature (approx. 20 degrees C).
- Perform measurements using text box outside the vehicle.

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







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







- Unbolt bracket -1- for sound insulation.
- Swivel securing lever -4- and disconnect electrical 16-pin harness connector for transmission wiring harness.







- Connect multimeter between terminals of 16-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 Test box
Terminal Socket
1 Terminal not assigned
2 5
3 1
4 32
5 16
6 44
7 29
8 30
9 33
10 Terminal not assigned
11 4
12 52
13 22
14 21
15 51
16 53

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 connections resulted in no deviations, internal transmission wiring harness must be checked, remove valve body to do so.
- If internal transmission wiring harness is OK, replace the corresponding solenoid valve or pressure regulator valve, remove valve body to do so