Specifications

Symptom List:
P0115-ENGINE COOLANT TEMP SENSOR CIRCUIT SIGNAL VOLT-
AGE TOO HIGH
P2054-ENGINE COOLANT TEMP SENSOR CIRCUIT SIGNAL VOLT-
AGE TOO HIGH
P2054-ENGINE COOLANT TEMP SENSOR CIRCUIT SIGNAL VOLT-
AGE TOO LOW
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0115-ENGINE COOLANT TEMP
SENSOR CIRCUIT SIGNAL VOLTAGE TOO HIGH.
When Monitored and Set Condition:
P0115-ENGINE COOLANT TEMP SENSOR CIRCUIT SIGNAL VOLTAGE TOO
HIGH
When Monitored: With the ignition on.
Set Condition: The Engine Coolant Temperature Sensor Signal voltage is above 4.98 volts
for more than 3 seconds.
P2054-ENGINE COOLANT TEMP SENSOR CIRCUIT SIGNAL VOLTAGE TOO
HIGH
When Monitored: With the ignition on.
Set Condition: The Engine Coolant Temperature Sensor Signal voltage is above 4.98 volts
for more than 3 seconds.
P2054-ENGINE COOLANT TEMP SENSOR CIRCUIT SIGNAL VOLTAGE TOO
LOW
When Monitored: With the ignition on.
Set Condition:
POSSIBLE CAUSES
INTERMITTENT CONDITION
ECM ECT SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
ECT SENSOR GROUND CIRCUIT OPEN
ECT SENSOR
ECT SENSOR SIGNAL CIRCUIT OPEN
ENGINE CONTROL MODULE
44
DRIVEABILITY - DIESEL