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.
Test NTC-6A: Checking Coolant Sensor Calibration
1999 Chrysler LHSSECTION Test NTC-6A: Checking Coolant Sensor Calibration
NOTE:
Perform TEST NTC-1A: NO TROUBLE CODES (NTC) TESTS before proceeding.
- Turn ignition on. Using scan tool, read Engine Coolant Temperature (ECT) sensor value. If engine operating temperature is more than 180°F (82°C), allow engine to cool to 150°F (66°C). Start engine. While monitoring scan tool, allow engine to reach normal operating temperature of more than 180°F (82°C). Go to next step.
- If ECT sensor value increased in a smooth transition, go to next step. If ECT sensor value did not increase in a smooth transition, verify engine cooling system is not malfunctioning. If engine cooling system is malfunctioning, repair as necessary. Perform TEST VER-2A: ROAD TEST VERIFICATION . If engine cooling system is not malfunctioning, replace ECT sensor. Perform TEST VER-2A: ROAD TEST VERIFICATION .
- If engine coolant temperature reached 180°F (82°C) or more, cooling system is functioning properly. Test is complete. If engine coolant temperature did not reach 180°F (82°C) or more, verify engine cooling system is not malfunctioning. If engine cooling system is malfunctioning, repair as necessary. Perform TEST VER-2A: ROAD TEST VERIFICATION . If engine cooling system is not malfunctioning, replace ECT sensor. Perform TEST VER-2A: ROAD TEST VERIFICATION .
RENDER: 1.0x
NO RELATED
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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.