P0111

P0111-INTAKE AIR TEMPERATURE (IAT) SENSOR RATIONALITY





For complete wiring diagrams refer to Diagrams/Electrical.


- When Monitored:

While the engine is running.

- Set Condition:

The ECM does not read a change in value from the sensor over time.







Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test


1. FAILED IAT SENSOR

Remove the temperature sensor and reconnect the wiring to the sensor. Monitor scan tool, while heating the sensor with an external heat source (DO NOT USE OPEN FLAME).

Does the reading from the sensor increase at least 5 degrees F. on the scan tool?

Yes

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Intermittent Condition

No

- Replace the Intake air temp sensor/MAP sensor.
- Perform POWERTRAIN VERIFICATION TEST VER - 1. Powertrain Verification Test