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Home >> Acura >> 2001 >> 3.2CL Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Engine Performance System Self-Diagnostics) >> Diagnostic Tests >> DTC P0116: Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Problem (2001-03 3.5RL) >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Acura 3.5RL, 2003 Acura 3.5RL, 2002 Acura 3.5RL, and 2001 Acura 3.5RL. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start engine. Hold engine speed at 3000 RPM with no load and transmission in Park or Neutral until radiator fan comes on, then allow engine to idle. Using scan tool, check ECT sensor. If ECT sensor does not indicate 176-200°F (80-93°C), go to next step. If ECT sensor indicates 176-200°F (80-93°C), problem is intermittent. System is okay at this time. Check thermostat and cooling system. Repair as necessary.
  2. Check thermostat and cooling system. Repair as necessary. If thermostat and cooling system are okay, replace ECT sensor.
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