Manifold Pressure/Vacuum Sensor: Testing and Inspection

2TR-FE ENGINE CONTROL: MANIFOLD ABSOLUTE PRESSURE SENSOR: ON-VEHICLE INSPECTION

1. INSPECT MANIFOLD ABSOLUTE PRESSURE SENSOR

(a) Inspect the power source voltage.

(1) Disconnect the manifold absolute pressure sensor connector.

(2) Turn the ignition switch to ON.

(3) Measure the voltage according to the value(s) in the table below.

Standard Voltage:













(4) If the result is not as specified, inspect the wire harness and ECM.

(5) Turn the ignition switch off.

(6) Connect the manifold absolute pressure sensor connector.

(b) Check the pressure.

(1) Connect a pressure gauge to the manifold absolute pressure sensor as shown in the illustration.





(2) Connect the Techstream to the DLC3.

(3) Turn the ignition switch to ON and turn the Techstream on.

(4) Enter the following menus: Powertrain / Engine and ECT / Data List / Air Pump Pressure (absolute).

(5) Check that the pressure displayed on the Techstream fluctuates when applying pressure to the pressure sensor with the pressure gauge.

OK:

Pressure fluctuates in response to pressure applied with pressure gauge.

HINT
The Techstream displays the air pump pressure (Air Pump Pressure (absolute)) as absolute pressure.

(6) If the result is not as specified, replace the manifold absolute pressure sensor.