DA1 - Check ECT or IAT Sensor
Diagnostic Trouble Code (DTC) 116 Engine Coolant Temperature (ECT) or 114 Intake Air Temperature (IAT) indicates that the corresponding sensor is out of Self-Test range. Correct range of measure is 0.3 to 3.7 volts.
Possible causes:
- Low coolant level (ECT).
- Ambient temperature below 10°C (50°F) (IAT).
- Faulty harness connector.
- Faulty sensor.
- Run engine for two minutes at 2000 rpm.
For No Starts:
- Go to DA3. DA3 - Check Resistance of Temperature Sensor - Engine Off
For vehicle stalls:
- Go to S1. S - System Check
- Check that upper radiator hose is hot and pressurized.
- Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)
- Is DTC 114 or 116 present?
Yes -- Go to DA2. DA2 - Check VREF Circuit Voltage At Throttle Position Sensor
No -- Service other DTCs as necessary.