Transmission Position Sensor/Switch: Testing and Inspection

Driving Range Signal, Checking

Vehicles with automatic transmission only
Engine control module receives following information from transmission control module:
Driving range selected (selector lever in 2/3/4/R/D) or
No driving range selected (selector lever in P or N)

Special tools and equipment
- V.A.G 1551 scan tool or or 1552 scan tool with cable VAG 1551/3
- Test box VAG 1598/31
- Hand multimeter VAG 1526 or multimeter VAG 1715
- Adapter set VAG 1594
- Wiring diagram

Test conditions
- Selector lever must be in position "P" on vehicles with an automatic transmission.

Test sequence
- Connect the V.A.G 1551 scan tool ((VAG 1552). Then switch ignition on and select engine control module with the "Address word" 01.
(Connecting scan tool and selecting engine control module.). [1][2][3]Connecting VAG 1551 Scan Tool

Indicated on display:


Rapid data transfer HELP
Select function XX


- Press keys 0 and 8 for the function "Read measuring value block" and confirm entry with Q key.

Indicated on display:


Read measuring value block
Input display group number XXX


- Press keys 0, 6 and 6 for "display group 66" and confirm with Q key.

Indicated on display: (1 to 4 = Display zones)


Read measuring value block 66 ->
1 2 3 4

- Observe display zone 4. The display must read
Specification: x x x 0 x "Neutral".
- Depress foot brake and select driving range. Display must jump to:
Specification: x x x 1 x "Gear engaged".
- Press -> key.
- Press keys 0 and 6 for "End output" function and confirm input with Q key.
- Switch off ignition.

If the display does not change:
- Checking data bus. CAN-Bus, Checking