Yingang YG125-30B, Руководство пользователя

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YG125-30B Maintenance Manual Engine management system
150
Malfcode
：
P0107
Information
：
MAP Circuit Low Voltage or Open
ITEM OPERATION RESULT NEXT STEP
1 Connect the diagnostic tool, and ignition on. Next
2 Check the data of
‘
BARO
’
. Make sure whether it is about 100kPa
(depending on where you are)
Yes Step 5
No Next
3 Remove the connector, and use the multimeter to check whether the
voltage between pin B and D is about 5V.
Yes Setp 5
No Next
4 Check whether the following pins is short to ground: J2-11, J2-10,
J2-16 of the ECU and pin A, D, B of the connector.
Yes Check the harness
No Next
5 Crank the engine to stay at idle. Check whether the MAP is abou
30-50kPa. Then go to WOT, check whether the MAP goes to about
90kPa.
Yes Diagnotic help
No Change the sensor
Malfcode
：
P0108
Information
：
MAP Circuit High Voltage
Malfcode
：
P0112
Information
：
IAT Circuit Low Voltage
ITEM OPERATION RESULT NEXT STEP
1 Connect the diagnostic tool, and ignition on. Next
2 check whether the data of
‘
intake air temperature
’
equals to the real
intake air temperature.
Yes Setp 5
No Next
3 Remove the connector, and use the multimeter to check whether the
resistance between pin B and D is reasonable according to the
temperature.
Yes Step 5
No Next
4 Remove the connector and check whether the voltage between pin
B and D is about 5V.
Yes Next
No Check harness
5 Check whether the following pins are short battery: J2-8, J2-10 of
the ECU and pin C, D of the connector.
Yes Change the harness
No Next
6 Crank the engine and stay idle. Check whether the
‘
intake air
temperature
’
goes up when the engine temperature goes up.
Yes Help
No Change the sensor.
ITEM OPERATION RESULT NEXT STEP
1 Connect the diagnostic tool, and ignition on. Next
2 Check the data of
‘
BARO
’
. Make sure whether it is about 100kPa
(depending on where you are)
Yes Step 5
No next
3 Remove the connector, and use the multimeter to check whether the
voltage between pin B and D is about 5V.
Yes Setp 5
No Next
4 Check whether the following pins is short to battery: J2-11, J2-10,
J2-16 of the ECU and pin A, D, B of the connector.
Yes Check the harness
No Next
5
Crank the engine to stay at idle. Check whether the MAP is abou
30-50kPa. Then go to WOT, check whether the MAP goes to about
90kPa.
Yes Diagnotic help
No Change the sensor