DA20 - DTC 0112 or 0117: Simulate Opposite Signal to PCM

Diagnostic Trouble Code (DTC) 0117 ECT or 0112 IAT indicates the sensor signal is less than Self-Test minimum. The IAT and ECT sensor minimum is 0.2 volt 250°F (121°C).

Possible Causes:
- Grounded circuit in harness.
- Damaged sensor.
- Improper harness connection.
- Damaged PCM.

- Key Off.

- Disconnect vehicle harness from suspect sensor. Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Scan Tool installed.

- Key On.

- Access ECT or IAT PID.

- Is the ECT or IAT PID more than 4.2 volts (less than -40°F/C)?

YES -- REPLACE sensor. RECONNECT harness. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes

NO -- Go to DA21. DA21 - Check VREF Circuit Voltage At Throttle Position Sensor