280ZX L6-2753cc 2.8L SOHC (L28E) (1982)
Coolant Temperature Sensor / Switch HVAC: Testing and Inspection
1.
Disconnect wiring harness connector to switch located on heater tube below # 1 spark plug.
2.
Connect ohmmeter to switch leads.
3.
With coolant temperature below 122 deg. F, meter should indicate infinite resistance; with engine at normal operating temperature, meter should
read 0 ohms.