Intake air temperature sensor/mass airflow sensor

The iat signal wire will be the blue wire with the black stripe on it, depending on ambient temperature you would typically see about 2.5-3.0 volts with the key in the on position. Do you have access to a scan tool to read actual temperature. On a stone cold engine the iat sensor and the ect sensor should be within a few degrees of each other. Also check the black/orange wire for battery voltage, 12.6 volts and the red/black wire and the brown wire should be grounds. The red wire in the connector is the maf out put wire which should have about 1.1-1.5 volts at idle. Hope this helps you.