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Home >> Nissan-Datsun >> 1986 >> 200SX Base >> Repair and Diagnosis >> Engine Performance >> System >> ECC Control System - 1.8L Turbo >> Operation - Self-Diagnostic System >> Coolant Temperature Sensor Test - Code 13

Coolant Temperature Sensor Test - Code 13

  1. Disconnect 16-pin connector. Measure the resistance between terminals No. 23 and 26. If resistance readings are okay, replace control unit. If not okay, check wiring harness. If harness is okay, place the sensor into water that is maintained at the specified temperature(s) in the COOLANT SENSOR TEMPERATURE/RESISTANCE RELATIONSHIP  table.
    COOLANT SENSOR TEMPERATURE/RESISTANCE RELATIONSHIP

    °F (°C) Ohms
    14°F (10°C) 8500-9500
    68°F (20°C) 2300-2700
    122°F (50°C) 770-870
    176°F (80°C) 300-330
  2. If the readings of the sensor do not match the ones in the table, replace temperature sensor. If readings match the ones in the table, sensor is good, replace the control unit.
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