CHILL 125 cc. SERVICE MANUAL AND EFI DIAGNOSTIC
26
Diagnostic help
：
1)
If the malfunction code shows again after clearance, check whether the connector is connected well.
2)
Do not ignore the effect of the engine maintenance situation, the cylinder pressure, and the mechanical ignition timing.
3)
Change another ECU to do the test. If the malfunction code disappears, the root cause is the ECU. If the malfunction code is still there, then use the old ECU to
do the test.
Malfunction code
：
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
Step 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 about 30-50kPa. Then
go to WOT, check whether the MAP goes to about 90kPa.
Yes
Diagnostic help
No
Change the sensor
