Thursday, April 26, 2012

2004 Toyota Corolla: MAF/ IAT Sensor wires?

MAF Sensor Connector plug has 5 wires.out of that 5 wires two wires are for IAT Sensor.

MAF means Mass Air Flow Sensor.

IAT means Intake Air Temperature Sensor.

On 2004 Toyota Corolla,the 5 wire color code are Brown,Yellow with Black tracer,Green,Black/while and Black.

Now out of this 5 wires, The yellow wire with a black tracer is the intake air temperature sensor signal to the engine control computer. The wire next to it the Brown wire is the ground reference wire for the intake air temperature sensor.
The other three wires are for the mass airflow and the battery feed for the sensor.

This details will help.
Thanks.


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