For 1990-2009 cars

#### Main Case

#### Adapter Case

The transmission electrical connectors are a very important part of the transmission operating system. Any interference with the electrical connections can cause the transmission to set the Diagnostic Trouble Codes (DTCs) and/or affect proper operation.

The following items can affect the electrical connections:

• | Bent pins in the connector from rough handling during connection and disconnection.

• | Wires backing away from the pins or coming uncrimped (in either the internal or external wiring harness).

• | Dirt contamination entering the connector when disconnected.

• | Pins in the internal wiring connector backing out of the connector or pushed out during reconnection.

• | Excessive transmission fluid leaking into the connector, wicking up into the external wiring harness, and degrading the wire insulation.

• | Water/moisture intrusion into the connector.

• | Low pin retention from the external connector from excessive connection and disconnection of the wiring connector assembly.

• | Pin corrosion from contamination.

• | Broken/cracked connector assembly.

Points to remember when working with the transmission wiring connectors:

• | In order to remove a connector:

1. | Release the locking tang and pull the connector straight out.

2. | Carefully limit twisting or wiggling the connectors during removal. Bent pins can occur.

3. | Do not pry the connectors off with a screwdriver or other tool.

• | In order to reinstall a connector:

1. | Be certain that both halves of the connector are free of dirt or other contaminants.

2. | Line up the connector with the mating half and push the connector straight in until the locking tang catches.

3. | Whenever the transmission external wiring connectors are disconnected from the internal harness and the engine is operating, the DTCs will set. Clear these DTCs after reconnecting the external connectors.