Wiring Harness Between TCM and Transmission, Checking

Wiring Harness Between Transmission Control Module (TCM) And Transmission, Checking


NOTE: This check is to be conducted if either the output Diagnostic Test Mode (DTM) or electrical testing indicates a malfunction in the wiring between the transmission and the Transmission Control Module (TCM) -J217-.


Test requirements

- Ignition switched off
- Test box VAG 1598/20 connected to 88- pin transmission wiring harness connector
- Test box VAG 1598/20 outside of and underneath vehicle







- Remove noise insulation.

Checking wiring connection to 16-pin connector on transmission







- Unlock bayonet lock -4- of 16-pin connector to transmission by turning it (remove bracket -1- for noise insulation if necessary).







- Check wiring connections for continuity (using multimeter) between terminals of 16-pin connector and sockets of test box VAG 1598.







Checking wiring to 8-pin connector for multi-function switch







- Remove spring-clip lock -2- from harness/multi-function switch connector.







- Check wiring connections for continuity (using multimeter) between terminals of 8-pin connector and sockets of test box VAG 1598.