CBF 125 AIR COOLING ENGINE SERVICE MANUAL
RENEGADE SPORT & SCRAMBLER X 125 EFI
10
3
9.3 Tools
Multimeter: to messure voltage, and electrical continuity in harness connection.
Diagnostic tool: reading the malfcode, and engine parameters.
Oil pressure garge: messure the fuel pressure.
Cylinder pressure garge: messure the pressure garge.
9.4 Malfunction codes and maintenance
Diagnostic Help
If the malfcode shows the voltage is low, it means, maybe the wire is causing electric short to the
ground. If the malfcode shows the voltage is high, it means maybe the wire is causing electric short
to the battery. If the malfcode shows the components signal is abnormal, it means the wire is open
or in short to other wires.
If the malfcode continues present again after clearence, check whether the connector is connected
properly.
Do not ignore engine maintenance situations, like cylinder pressure, and the mechanical ignition
timing.
If a malfcode continue after rechecking, change another ECU to do the test. If the malfcode
disappears, the root cause is the ECU. If the malfcode is still there, then use the old ECU to continue
with the test.
Malfcode
：
P0107
Information
：
MAP Circuit Low Voltage or Open
STEP
OPERATION
SOLVED
FOLLOWING 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 snesor
