PCC1302 PowerCommand Code 1847 Engine Coolant Temperature High

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This illustration show you guide on how to solve PCC1302 PowerCommand trouble code 1847 engine coolant temperature high shutdown with cooldown.

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Logic:
Exhaust gas temperature sensor signal is out of range – shorted high.

Possible Causes:
1 Inaccurate engine temperature sensor
2 Fault simulation feature is enabled
3 Threshold setting too low

Diagnosis and Repair:
1 Inaccurate engine temperature sensor
a Verify the sensor accuracy with a thermocouple or similar temperature probe.
a Connect the temperature probe to the engine near the coolant temperature sensor.
b Connect InPower.
c Compare the coolant temperature reading on the service tool monitor screen to the reading from the temperature probe. If the two readings are reasonably close, then the sensor is reading correctly.

2 Fault simulation feature is enabled
a Verify that the fault simulation feature for the sensor is not enabled.
a Connect InPower.
b Verify that the fault simulation is not enabled for the coolant temperature sensor by connecting to the PCC via InPower. If the fault simulation is disabled, there is no problem.

3 Threshold setting too low
a Check threshold settings.
a Connect InPower.
b Verify that fault threshold is within the normal operating range for the coolant temperature sensor. Refer to the engine manual for correct threshold values and make the appropriate changes using InPower.

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