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 P0106 if the ECM detects signal voltage out of its proper operating performance rage.
Item
Detecting Condition
Possible Cause
DTC Strategy
Rationality check
Contact resistance in connections
Dirty air cleaner
Leakage in intake system
Faulty MAP sensor
Faulty ECM
Enable Conditions
No TPS erro
Time elapse after start > 5.0 s
Threshold Value
Intake manifold pressure > maximum threshold : f(engine speed, throttle opening degree)
Diagnostic Time
3 sec
MIL ON Condition
3 driving cycle
TPS
MAPS
Resistance
Output voltage
1.6 ~ 2.4 ? (20?)
0.2 ~ 4.5 V
1.2 ~ 4.1 V
As often as possible, the MAPS signal should be compared with the TPS signal. Check whether the MAPS and TPS signals increase at the same time when accelerating. During acceleration, the MAPS output voltage increases; during deceleration, the MAPS output voltage decreases. The left illustration is a signal waveform at idle and the right illustration is during acceleration and deceleration.