4WD Control Electronic Control Unit

WARNING: This page is about a different car, the 2002 Toyota Tundra and 2001 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For circuit reference, see CONNECTOR IDENTIFICATION and/or WIRING DIAGRAMS .

Connect the wire harness side connector to the 4WD control ECU and inspect the wiring harness side connector from the back side. See Fig 1 and Fig 2 .

Fig 1: Identifying 4WD Connector Terminals

Fig 2: Identifying 4WD Control ECU Terminal Values