SSANGYONG Y200 Manual page 664

Mass Air Flow Sensor Input Voltage Inspection
1. Turn the ignition switch to "ON" position.
2. Measure the signal voltage between the ECM pin No. 103 and No. 104.
Application
Ignition "ON"
Engine
Status
Idling
Notice: If the measured value is not within the specified value, the possible cause may be in cable or MAF
sensor in itself. Perform the 5 volt power supply inspection procedures.
Mass Air Flow Sensor 5 volt Power Supply Inspection
1. Turn the ignition switch to "OFF" position.
2. Disconnect the HFM sensor connector.
3. Turn the ignition switch to "ON" position.
4. Measure the voltage between the ECM pin No. 108 and MAF sensor connecter terminal No. 3.
Specified Value
Notice: If the measured value is not within the specified value, the possible cause may be in cableor ECM
coupling.
5. Measure the voltage between the ECM pin No. 105 and MAF sensor connecter terminal No. 4.
Specified Value
Notice: If the measured value is not within the specified value, the possible cause may be in cableor ECM
coupling.
Mass Air Flow Sensor 12 volt Power Supply Inspection
1. Turn the ignition switch to "OFF" position.
2. Disconnect the HFM sensor connector.
3. Turn the ignition switch to "ON" position.
4. Measure the voltage between the ECM pin No. 105 and MAF sensor connecter terminal No. 2.
Specified Value
Notice: If the measured value is not within the specified value, the possible cause may be in cable or Over
Voltage Protection Relay (OVPR).
SSANGYONG Y200
Specified Value
0.9 ~ 1.1 V
1.3 ~ 1.7 V
(Coolant temperature is
over 70°C)
4.7 ~ 5.2 V
4.7 ~ 5.2 V
11 ~ 14 V
M161 ENGINE CONTROLS 1F2-53