M45 V8-4.5L (VK45DE) (2006)
Temperature Sensor (Gauge): Description and Operation
WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature.
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ECM converses a signal from engine coolant temperature sensor to engine coolant temperature signal, and transmits to unified meter and A/C amp.
with CAN communication.
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Unified meter and A/C amp. transmits engine coolant temperature signal to combination meter with communication line.
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Combination meter converses engine coolant temperature signal to the angle signal, and commands to water temperature gauge.