ECT Sensor 1 Replacement

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Drain the engine coolant (see COOLANT CHECK ).
Remove the engine cover (see step 6 under ENGINE REMOVAL ).
Remove the main under-hood fuse box.
Disconnect the ECT sensor 1 2P connector (A).

Fig 1: Identifying ECT Sensor 1 2P Connector And O-Ring
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove ECT sensor 1 (B).
Install the parts in the reverse order of removal with a new O-ring (C), then refill the radiator with engine coolant (see COOLANT CHECK ).