Mass air flow sensor location

Good morning,

Can I have the entire VIN number for the car?

Why are you looking for this? Do you have a code or another issue?

Roy

Using your VIN comes up as a 1997 Toyota Camry XLE Sedan 4-Door 2.2L DOHC MFI.
The service information for it shows it doesn't use a MAF sensor. Instead it uses a Manifold Absolute Pressure sensor. Could you post the actual code you have and check the sticker under the hood to verify which engine you have?

Thank you.

You have a 2.2 engine, not a 2.0 according to your VIN.

As far as the sensor, there is not one listed.

I need the code to help you. I need the number.

You cannot clean those sensors either. They are replacements only.

Roy

Sounds like a plan.

Okay, the 110 is for the intake air temperature sensor which is on the inlet line that goes from the air filter to the throttle body.

CIRCUIT DESCRIPTION
A thermistor built in the sensor changes the resistance value according to the intake air temp, The lower the intake air temp, the greater the thermistor resistance value, and the higher the intake air temp, the lower the thermistor resistance value (See fig.1).
The air intake temp. Sensor is connected to the ECM (See below). The 5V power source voltage in the ECM is applied to the intake temp. Sensor from the terminal THA via a resistor R.
That is, the resistor R and the intake air temp. Sensor are connected in series. When the resistance value of the intake air temp. Sensor changes in accordance with changes in the intake air temp, the potential at terminal THA also changes. Based on this signal, the ECM increases the fuel injection volume to improve driveability during cold engine operation.
If the ECM detects the DTC "P0110", it operates the fail safe function in which the intake air temp. Is assumed to be 20°C (68°F).

120

This is for the throttle position sensor on the throttle body

CIRCUIT DESCRIPTION
The throttle position sensor is mounted in the throttle body and detects the throttle valve opening angle. When the throttle valve is fully closed, a voltage of approximately 0.3 - 0.8 V is applied to terminal VTA of the ECM. The voltage applied to the terminals VTA of the ECM increases in proportion to the opening angle of the throttle valve and becomes approximately 3.2 - 4.9 V when the throttle valve is fully opened. The ECM judges the vehicle driving conditions from this signal input from terminal VTA, and uses it as one of the conditions for deciding the air-fuel ratio correction, power increase correction and fuel-cut control etc.

I wonder if the issue isn't related to a bad ground. Looks like the MAP, TPS and IAT share the ground connection. I would check both the red wires for 5 volts and the brown wires for a good ground. A poor ground can cause the resistance in the sensors to appear incorrectly even if the sensor itself is good. Then you get codes for multiple items that share those connections.

How to repair it depends on how it's bad. The ground is a return to the ECM on the brown wire. If it's corroded you can clean the connection and test again, if it's a broken wire then splicing it by stripping it back, adding heat shrink tubing and soldering it will work.

https://www.2carpros.com/articles/how-to-check-wiring

You can also use a voltmeter and remove the connector from the IAT and insert the meter leads into the connector. See if you have 12 volts. If you do, then the power and return to the ECM are good. There is no external ground on these sensors. The modules handle all the grounds.

Roy