Wiring Between Transmission and 88-Pin Connector For Transmission Control Module (Tcm), Checking

Wiring between transmission and 88-pin connector for Transmission Control Module (TCM), checking
To be performed when:
^ Output Diagnostic Test Mode (DTM) or
^ Electric test indicates a malfunction between transmission and TCM 4217.

Test condition:
^ Ignition switched off
^ Test box V.A.G. 159&,20 connected to 88-pin connector of transmission wiring harness.





^ Remove sound damper tray.

Wiring connection to 16-pin connector at transmission, checking





^ Disconnect connector -4- of the 16-pin connector from transmission by twisting.
^ If necessary remove bracket -1- for sound dampening.





^ With multimeter Fluke 83, check wiring between terminals of 16-pin connector and sockets of test box VAG 1598/20 for continuity. For resistance values see following table.








Note:
^ Men wiring is OK, check wiring harness inside the transmission. Remove and replace valve body
^ If wiring inside transmission is OK, replace applicable solenoid valves. Remove and install valve body.

Wiring to Multi-function Transmission Range (TR) Switch, checking





^ Remove clip for 8-pin connector -2- to TR Switch.





^ With multimeter Fluke 83, check for continuity between terminals of 8pin connector and sockets of test box VAG 1598/20. For resistance values see following table.





Note:
^ If wiring is OK, replace TR Switch-FI25.