Wiring Between Transmission and 88-Pin Connector For TCM

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 -J217.

Test condition:
- Ignition switched off
- Test box V.A.G 1598120 connected to 88pin 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 V.A.G 1598/20 for continuity. For resistance values see following table.





connector terminal 1 thru 8





connector terminal 9 thru 11





connector terminal 12 thru 14





connector terminal 15 and 16

Note:
^ When 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 8-pin connector and sockets of test box V.A.G 1598/20. For resistance values see table.





1) With connector for TR Switch -F125 connected, the backup lights must light up when ignition is switched on and reverse gear is engaged.

Note: If wiring is OK, replace TR Switch-F125