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Component Inspection
1.CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR-1
  1. Turn ignition switch OFF.
  2. Start engine and warm it up to normal operating temperature.
  3. Turn ignition switch OFF, wait at least 5 seconds and then turn ON.
  4. Check the voltage between ECM harness connector terminals as follows.
    ECM
    ConnectorTerminal
    F52120106
    note
    • To avoid the influence of intake manifold vacuum, check the voltage 1 or more minutes past after engine is stopped.
    • Because the sensor is absolute pressure sensor, output value may differ depending on atmospheric pressure and altitude.
  5. Measure the atmospheric pressure.
    noteAs the atmospheric pressure described on the synoptic chart is the value at sea level, compensate the pressure with the following chart.
    Altitude (m)Compensated pressure (hPa)
    00
    200−24
    400−47
    600−70
    800−92
    1000−114
    1500−168
    2000−218
  6. Check the manifold absolute pressure sensor value corresponding to the atmospheric pressure.
    Atmospheric pressure (hPa)Voltage (V)
    8003.1 – 3.7
    8503.3 – 3.9
    9003.5 – 4.1
    9503.8 – 4.3
    10004.0 – 4.6
    10504.2 – 4.8
Is the inspection result normal?
.
Replace MAP sensor. Refer to Removal and InstallationExploded View.
 
2.CHECK MAP SENSOR-2
  1. Start engine and let it idle.
  2. Check intake manifold vacuum.
  3. Check the voltage between ECM harness connector terminals as follows.
    ECM
    ConnectorTerminal
    F52120106
  4. Confirm the difference of the voltage when engine is stopped and at idling is within the values shown in the following chart.
    Intake manifold vacuum [kPa (mmHg)]Voltage difference
    −40 (−300)1.5 – 2.0 V
    −53.3 (−400)2.0 – 2.6 V
    −66.7 (−500)2.6 – 3.2 V
    −80 (−600)3.2 – 3.8 V
Is the inspection result normal?
INSPECTION END
Replace MAP sensor. Refer to Removal and InstallationExploded View.