Intake Air Temperature (IAT) Sensor Inspection

INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION[L3 WITH TC]

Resistance Inspection

NOTE: Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flowchart. (See HOW TO USE THIS MANUAL.)

1. Disconnect the MAF/IAT sensor.

Specification:

2. Measure the resistance between the MAF/IAT sensor terminals D and E using a tester.
- If not as specified, replace the MAF/IAT sensor.
- If the MAF/IAT sensor is normal, but the PID is out of specification, perform the "Circuit Open/Short Inspection".







Circuit Open/Short Inspection
1. Disconnect the PCM connector.
2. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Open circuit
- If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
- MAF/IAT sensor terminal D and PCM terminal 1M
- MAF/IAT sensor terminal E and PCM terminal 1AR

Short circuit
- If there is continuity, there is a short circuit. Repair or replace the wiring harness.
- MAF/IAT sensor terminal E and power supply
- MAF/IAT sensor terminal D and power supply
- MAF/IAT sensor terminal D and body ground