Page 852 - Workshop Manual - Tunland (2017)
P. 852
04-166 DIAGNOSTICS - ENGINE CONTROL SYSTEM
04 P3243-ENGINE COOLING SYSTEM MONITOR - DATA VALID BUT
BELOW NORMAL OPERATING RANGE - MEDIUM SEVERITY
LEVEL
Description
1 . The coolant temperature sensor, a variable resistor sensor, used to measure
the temperature of the engine coolant. ECM provides the 5V power to the coolant
temperature signal circuit. ECM monitors voltage changes due to sensor
resistance changes to determine coolant temperature.
Circuit Diagram
