Signal From Automatic Transmission, Checking

SIGNAL FROM AUTOMATIC TRANSMISSION, CHECKING

Special tools, testers and auxiliary items
- VAG 1551/1552 scan tool with VAG 1551/3 adapter cable
- VAG 1598/18 test box
- Multimeter (Fluke 83 or equivalent)
- Connector test kit VW 1594
- Wiring diagram

Test sequence
- Engine running at idle

- Connect VAG 1551/1552 scan tool and select "Engine Electronics" address word 01. VAG 1551 Connecting and Selecting Address Word 01

Indicated on display

Rapid data transfer HELP
Select function XX

- Press buttons -0- and -8- to select 'Read Measuring Value Block" function 08 and press -Q- button to confirm input.

Indicated on display

Read Measuring Value Block HELP
Input display group number XXX

- Press buttons -0-, -0- and -8- for display group 008 and press -Q- button to confirm input.

Indicated on display (1-4 = Display fields)

Read Measuring Value Block 8 ->
1 2 3 4

- Check the signals from automatic transmission in display field 2:





Continuation
If the display does not read as described: Check the wiring between ECM (terminals 07, 11, 18 and 21) and Transmission Control Module (TCM) according to wiring diagram.