Circuit Description

This test monitors ECT sensor after timer reaches 4.25 minutes. The PCM looks at the test condition every second and increments the timer each time test conditions are met. After 4.25 minutes, and if ECT drops to less than 41°F (5°C) for 3 seconds, DTC will set. If ECT is greater than 41°F (5°C), test will be considered passed regardless of timer. The timer will decrement if PCM is disabling fuel to any cylinder during traction control maneuvers, acceleration reduction, torque management, etc. The timer will reset only when engine stops running.

Conditions for setting DTC:

• DTCs P0112, P0113, P0117 or P0118 not set.
• Engine running.
• IAT at 32°F (0°C) or greater.
• Vehicle speed at least 10 MPH.