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Home >> Audi >> 1987 >> 5000 CS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Digital Control System - Turbo & QUATTRO >> Diagnosis & Testing >> Electrical Components (Fuel System) >> Coolant Temperature Sensor

Coolant Temperature Sensor

  1. Disconnect wire from coolant temperature sensor. Ensure coolant temperature sensor resistance is 60-1000 ohms. If not, replace sensor. If okay, disconnect ECU harness connector.
  2. Check for continuity in wire between ECU terminal No. 10 and coolant temperature sensor. See Figure . If no continuity, check for an open circuit in wire.