G 1500 1/2 Ton Van V8-5.7L VIN R (1996)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
The scan tool displays engine coolant temperature in degrees. After engine start-up, the temperature should rise steadily to about 90°C (194°F) then
stabilize when thermostat opens. If the engine has not been run for several hours (overnight), the engine coolant temperature and intake air temperature
displays should be close to each other. When the VCM detects a malfunction in the Engine Coolant Temperature (ECT) sensor circuit, the following
Diagnostic Trouble Code (DTC)s will set:
^
DTC P0117 circuit low.
^
DTC P0118 circuit high.
^
DTC P0125 excessive time to Closed Loop.
^
DTC P1114 circuit intermittent low.
^
DTC P1115 circuit intermittent high. The above DTCs contain a table to check for sensor resistance values relative to temperature.
Refer to Diagnostic Tables. See: Powertrain Management/Computers and Control Systems/Testing and Inspection
