Typical Enabling Conditions

2004 Toyota Matrix XR, FWD, StandardSECTION Typical Enabling Conditions
WARNING: This page is about a different car, the 2004 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not present P0100 to P0103: MAF meter

ECT Sensor Stuck at Low ECT: 

TYPICAL ENABLING CONDITIONS (ECT SENSOR STUCK AT LOW ECT)

Cumulative idle off period 250 seconds or more
Speed increase by 30 km/h (19 mph) or more 10 times or more
ECT 35 to 60°C (95 to 140°F)
IAT -6.7°C (20°F) or more

ECT Sensor Stuck at High ECT: 

TYPICAL ENABLING CONDITIONS (ECT SENSOR STUCK AT HIGH ECT)

ECT 60 to 140°C (140 to 284°F)
IAT -6.7°C (20°F) or more
"Stop and go"(1) Once or more
"Steady driving and stop"(2) Once or more
Engine running time after engine start 0.3 seconds or more
(1) Vehicle is stopped for 20 seconds or more and accelerated to more than 70 km/h (44 mph) within 40 seconds.
(2) Vehicle is driven by 65 km/h (40 mph) or more for 30 seconds or more and the vehicle speed reaches 70 km/h (44 mph). The vehicle is decelerated from 65 km/h (40 mph) to 3 km/h (2 mph) or less within 35 seconds and stopped for 10 seconds.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.