P0116

Test 1:

Test 2 - Test 5:

Test 6 - Test 8:

SYMPTOM
P0116-ENGINE COOLANT TEMPERATURE PERFORMANCE

WHEN MONITORED
Engine off time is greater than 480 minutes. Ambient temperature is greater than 4° C (39° F).

SET CONDITION
After a calibrated amount of cool down time, the PCM compares the ECT Sensor, IAT Sensor and the Ambient Air Temperature Sensor values. If the ECT Sensor value is not within calibrated temperature amount of the other two temperature sensors an error is detected. Two Trip Fault.

POSSIBLE CAUSES
- Good trip equal to zero
- (K2) ECT signal circuit shorted to battery voltage
- ECT sensor voltage below 1.0 volt
- (K2) ECT signal circuit open
- (K4) Sensor ground circuit open
- (K2) ECT signal circuit shorted to ground
- (K2) ECT signal shorted to (K4) sensor ground
- PCM high
- PCM low