The Manifold Absolute Pressure(MAP) sensor measures the change of pressure in the intake manifold. The pressure of intake manifold is changed as variable engine running condition and converted into voltage and then it is monitored by the ECM.
ECM sets DTC P0102 if the ECM detects signal voltage higher than the possible range of a properly operating MAP sensor
Item
Detecting Condition
Possible cause
DTC Strategy
? Signal check, high
? Open in signal circuit
? Short to battery in signal circuit(pin 33 to 37)
? Open in ground circuit
? Poor connection of MAP sensor
? Faulty MAP sensor
? Faulty ECM
Threshold value
? Sensor voltage > 4.88V
Enable Conditions
? 5 sec after engine start
Diagnostic Time
? 0 sec
Normal Parameter
Idle
Approx. 3000 rpm
Signal Voltage
0.8 ~ 1.6V
3.9 ~ 4.1V
When checking TPS wave form,it is strongly recommended to examine wave form with MAP sensor wave.
Peride ? is the voltage of MAP in idling and 0.8~1.2 V,and there must be a little fluctuation in wave form.
In case there is no fluctuation
Possible cause : Deteriorated MAP sensor or some foreign material in MAP sensor.
The voltage in Periode ? is 0.3~1.0V in average.
Periode ? is in W.O.T and the voltage there is 4.3 V, and MAP sensor voltage is about 4.3 V.