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Home >> Nissan-Datsun >> 1982 >> 280ZX Base, 2.8L Eng VIN C, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electronic Concentrated Engine Control >> Testing >> Component Testing >> Cylinder Head Temperature Sensor
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Cylinder Head Temperature Sensor

  1. With harness connected to sensor, measure between control unit connector pin 23 and ground. At temperatures above 68°F (20°C), resistance should be below 2900 ohms. At temperatures below 68°F (20°C), resistance should be above 2100 ohms. If not, repair harness.
  2. Remove sensor from head, and dip end of sensor into water at 68°F (20°C). Resistance should be 2100-2900 ohms across sensor terminals. Repeat test with water at 176°F (80°C). Resistance should be approximately 250-400 ohms.