MANIFOLD ABSOLUTE PRESSURE SENSOR ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT VACUUM SENSOR ASSEMBLY


    1. A01OALPC95
      *a

      Front view of wire harness connector

      (to Vacuum Sensor Assembly)

      Check the terminal voltage.


      1. Disconnect the vacuum sensor assembly connector.

      2. Turn the power switch on (IG).

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

        Standard Voltage
        Tester Connection Condition Specified Condition
        3 (VC) - 2 (E2) IG ON 4.75 to 5.25 V
        1 (P1M) - 2 (E2) IG ON 3.0 to 5.0 V

        If the result is not as specified, there may be an open or short in the VC or E2 circuit.

    2. Check the intake manifold pressure.


      1. Connect the GTS to the DLC3.

      2. Turn the power switch on (IG).

      3. Turn the GTS on.

      4. Enter the following menus: Powertrain / Engine and ECT / Data List / MAP.


        Powertrain > Engine and ECT > Data List
        Tester Display
        MAP

      5. According to the display on the GTS read the Data List.

        OK
        The value is approximately equal to atmospheric pressure.

        Tech Tips


        • Standard atmospheric pressure is 101 kPa (abs) (758 mmHg (abs)).

        • For every 100 m (328 ft.) increase in altitude, pressure drops by 1 kPa (8 mmHg). This varies with the weather.