METHOD FOR DETECTING HEATER CORE ISOLATION VALVE STATUS
Methods and systems are provided for monitoring a status of a heater core isolation valve (HCIV) housing in an engine coolant circuit including a first coolant loop and a second coolant loop. In one example, a method may include indicating degradation of the HCIV based on a difference between a firs...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
11.02.2021
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Subjects | |
Online Access | Get full text |
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Summary: | Methods and systems are provided for monitoring a status of a heater core isolation valve (HCIV) housing in an engine coolant circuit including a first coolant loop and a second coolant loop. In one example, a method may include indicating degradation of the HCIV based on a difference between a first coolant loop temperature and a second coolant loop temperature upon activation of coolant system pumps and deactivation of a positive temperature coefficient (PTC) heater housed in the cabin heating loop. |
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Bibliography: | Application Number: US201916536138 |