Radiator Fan Switch Test

Remove the radiator fan switch from the radiator (see RADIATOR FAN SWITCH TEST ).
Suspend the radiator fan switch (A) in a container of water as shown.

Fig 1: Checking Radiator Fan Switch In Container Of Water
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Heat the water, and check the temperature with a thermometer. Do not let the thermometer (B) touch the bottom of the hot container.
Measure the continuity between terminal No. 1 and terminal No. 2 according to the table.

Fig 2: Continuity Chart Between Terminal No. 1 And No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Replace, if necessary, and install the radiator fan switch (see RADIATOR FAN SWITCH TEST ).