Automatic Transmission Inline 20-Way Connector Description
The transmission electrical connector is an important part of the transmission operating system. Any interference with the electrical connection can cause the transmission to set diagnostic trouble codes (DTC) or affect proper operation.
The following items can affect the electrical connection:
- Bent terminals in the connector from rough handling during connection and disconnection
- Wires backing away from the pins or coming uncrimped, in either the internal or the external wiring harness
- Dirt or moisture contamination entering the connector when disconnected
- Pins in the internal wiring connector backing out of the connector during connection
- Transmission fluid leaking into the connector, wicking up into the external wiring harness and degrading the wire insulation
- Low terminal tension in the external connector from excessive connection and disconnection of the wiring connector assembly
- Terminal corrosion from contamination
- Damaged connector or connector lock assembly
Remember the following points:
- In order to disconnect the connector, turn the connector clockwise and pull.
- Do not pry the connector with a screwdriver or other tool.
- The connector should screw into place with a positive feel and lock when properly installed.
- Whenever the transmission external wiring connector is disconnected from the internal harness and the ignition is ON, transmission DTCs will set. Clear these DTCs after reconnecting the transmission connector.