Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2019TRAX PREMIER, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 6 (ENGINE COOLING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P00B3 OR P00B4COMPONENT TESTING
2019 Chevrolet Trax Premier, AWD
Component Testing
2019 Chevrolet Trax Premier, AWDSECTION Component Testing
WARNING: This page is about a different car, the 2018 Chevrolet Trax and 2018 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition/Vehicle - Off
- Disconnect the electrical connector: B203 Radiator Coolant Temperature Sensor
- Test for 42 to 78, 834 ohms between the test points: Signal terminal 1 & Low Reference terminal 2
- If not between 42 and 78, 834 ohms
Replace the component: B203 Radiator Coolant Temperature Sensor
- Go to next step: If between 42 and 78, 834 ohms
- If not between 42 and 78, 834 ohms
- Verify the value is within the range listed in the table:Temperature Versus Resistance
- If not in the specified range
Replace the component: B203 Radiator Coolant Temperature Sensor
- Go to next step: If in the specified range
- If not in the specified range
- Test for infinite resistance between the test points: Each terminal of the component & The component's housing
- If less than infinite resistance
Replace the component: B203 Radiator Coolant Temperature Sensor
- Go to next step: If infinite resistance
- If less than infinite resistance
- All OK.
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.