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Radiator (Cooling) Fan Control Relay Operation

A/C SWITCH OFF

Engine Coolant Temp. °F (°C)

Cooling Fan Speed

Relay No. (Off or On)

Less Than 205 (96)

Off

1, 2 & 3 (Off)

Between 207-223 (97-106)

⁽¹⁾ Low

1 (On), 2 & 3 (Off)

Greater Than 225 (107)

High

1, 2 & 3 (On)

⁽¹⁾	The radiator (cooling) fan should be off when vehicle speed is less than 12 MPH.

A/C SWITCH ON

Engine Coolant Temp. °F (°C)

Cooling Fan Speed

Relay No. (Off or On)

Less Than 201 (94)

⁽¹⁾ Low

1 (On)

Less Than 201 (94)

⁽¹⁾ Low

2 & 3 (Off)

Between 203-219 (95-104)

⁽²⁾ High

1, 2 & 3 (On)

Greater Than 221 (105)

High

1, 2 & 3 (On)

⁽¹⁾	The radiator (cooling) fan should be off when vehicle speed is greater than 50 MPH.

⁽²⁾	The radiator (cooling) fan should be on low speed when vehicle speed is less than 12 MPH.

Fig 1: Identifying Diagnostic Chart Symbols

G90A20594

Courtesy of NISSAN MOTOR CO., U.S.A.