Radiator Fan Switch Test
- With coolant temperature less than rated activation temperature, check continuity across terminals of radiator fan switch. See RADIATOR FAN SWITCH TEMPERATURE table. Continuity should not exist. Warm engine to operating temperature. Continuity should now exist.
- If continuity does not exist, remove radiator fan switch. Check for coating of switch with foreign substance. Bench test switch using a thermometer, a glass or metal container filled with coolant mixture, and a heat source. Check resistance at rated temperature. If switch does not function properly, replace switch.
RADIATOR FAN SWITCH TEMPERATURE
| Application |
Activation Temp. °F (°C) |
| Axxess |
|
| Maxima |
|
| Pulsar NX |
180-190 (82-88) |
| Sentra |
180-190 (82-88) |
| Stanza |
|
| 240SX |
198-208 (92-98) |
| 300ZX |
|