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
- VAG1551 scan tool or VAG1552 mobile scan tool with VAG1551/3B cable
- VAG1598/31 test box
- VAG1526 hand multimeter or VAG1715 multimeter
- VAG1594 adapter set
- Wiring diagram

Test conditions
- Selector lever of the automatic transmission must be in "P" or "N" position.

Test sequence
- Connect VAG1551 scan tool (VAG1552). Switch ignition on and select engine control module with "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 function "Read measured value block" and confirm entry with Q key.

Indicated on display


Read measured value block HELP
Input display group number XXX


- Press keys 0, 5 and 6 for "Display group number 56" and confirm entry with Q key.

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


Read measured value block 56 ->
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".

If the specifications are obtained:
- Press -> key.
- Press keys 0 and 6 for "End output" function and confirm input with Q key.
- Switch ignition off.

If the display does not change:
- Check data bus Terminal Resistance For CAN-Bus, Checking