Wiring Harness and Connectors

NOTICE: Do not backprobe Weatherpack connectors. The connectors are sealed for operation in an exposed environment. Backprobing may damage the seal which could eventually cause the connector to fail due to corrosion.

A wiring harness electrically connects the TCM to various sensors, solenoids, and relays within the system. Many of the connectors are environmentally-protected (Weatherpack).

For any test that requires probing the TCM harness connector or a component harness connector, use the Connector Test Adapter Kit J 35616-A.
- Using this kit will prevent damage to the harness connector terminals.

System diagnosis will often require that electrical readings at these connectors in order to observe system performance. Anytime a connector requires separation, take care so that the pins or the terminals are not damaged.

When disconnecting the transmission external connector, additional DTC(s) will be set. Clear these DTC(s) after reconnecting the external connector. Use of a test jumper harness will aid in diagnosis of the transmission wiring and system components.