With Manufacturer's Scan Tool

Selector Lever Position Signal, Checking

Only for vehicles with automatic transmission

The Engine Control Module (ECM) receives the following information from the transmission control module:
Driving position selected (selector lever in 2/3/4/R/D) or
no driving position selected (selector lever in P or N)

Special tools and equipment
- VAG 1551 Scan Tool (or VAG 1552 mobile scan tool) with VAG 1551/3 cable
- VAG 1598/31 test box
- VAG 1526 multimeter or VAG 1715 multimeter
- VAG 1594 connector test kit
- Wiring diagram

Test condition
- Selector lever of automatic transmission must be in "P" or "N".

Test sequence
- Connect VAG 1551 scan tool (VAG 1552). Then switch ignition on and select the Engine Control Module (ECM) using address word 01 (connecting scan tool and selecting ECM).

Indicated on display

Rapid data transfer HELP
Select function XX

- Press buttons -0- and -8- to select "Read measuring value block" function 08. Press -Q- button to confirm input.

Indicated on display

Read Measuring Value Block HELP
Input display group number XXX

- Press 0, 5 and 6 for the function "display group number 56", and then press Q to exit from input mode.

Indicated on display (1 - 4 display fields)

Read Measuring Value Block 56 ->
1 2 3 4

- Observe display field 4. The reading should be
Specification: x x x 0 x "Neutral" on the display.

- Press foot brake pedal and select driving position. The reading should be
Specification: x x x 1 x "DrivePos. ON" on the display.

- Press -> button.
- Press buttons -0- and -6- to select "End Output" function 06. Press -Q- button to confirm input.
- Switch ignition off.

If reading does not change:
- Test databus. CAN-Bus, Checking