P010A

P010A MANIFOLD ABSOLUTE PRESSURE SENSOR

DTC Logic


DTC DETECTION LOGIC

NOTE:
If DTC P010A is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to "DTC Logic" P0643.






DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
1.Turn ignition switch OFF and wait at least 10 seconds.
2.Turn ignition switch ON.
3.Turn ignition switch OFF and wait at least 10 seconds.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

1.Start engine and let it idle for 10 seconds.
2.Check DTC.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR POWER SUPPLY CIRCUIT

1.Disconnect manifold absolute pressure (MAP) sensor harness connector.
2.Turn ignition switch ON.
3.Check the voltage between MAP sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace error-detected parts.

2. CHECK MAP SENSOR GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between manifold MAP sensor harness connector and ECM harness connector.





4.Also check harness for short to power.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace error-detected parts.

3. CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INPUT SIGNAL CIRCUIT

1.Check the continuity between MAP sensor harness connector and ECM harness connector.





2.Also check harness for short to ground and to power.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace error-detected parts.

4. CHECK MAP SENSOR

Refer to "Component Inspection (MAP Sensor)" .
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Replace MAP sensor.


Component Inspection (MAP Sensor)


1. CHECK 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.





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.
NOTE:
As the atmospheric pressure described on the synoptic chart is the value at sea level, compensate the pressure with the following chart.





6.Check the manifold absolute pressure sensor value corresponding to the atmospheric pressure.










Is the inspection result normal?
YES- GO TO 2.
NO- Replace MAP sensor.

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 per the following.





4.Confirm the difference of the voltage when engine is stopped and at idling is within the values shown in the following chart.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace MAP sensor.