CBF 125 AIR COOLING ENGINE SERVICE MANUAL
RENEGADE SPORT & SCRAMBLER X 125 EFI
10
7
Malfcode
:
P0123
Information
:
TPS Circuit High Voltage
STEP
OPERATION
SOLVED
FOLLOWING STEP
1
Connect the diagnostic tool, and ignition on.
next
2
Check whether the data of ‘Throttle opening’ is bettwen
0%-1%.
Yes
Step 5
No
Next
3
Open the throttle to 100% slowly, check whether the data
of ‘throttle opening’ goes to between 90%-100%.
Yes
Step 5
No
Next
4
Repeat Step 3, chek whether the data jumps when open
the throttle slowly.
Yes
Change the sensor
No
Next
5
Remove the connector and check whether the following
pins are short to battery: J2-12, J2-16 of ECU and pin A and
C of the sensor.
Yes
Harness issue
No
Next
6
Use multimeter to check whether the voltage between pin
A and B is about 5V.
Yes
Help
No
Step 5
Malfcode
:
P0131/P0132
Information
:
O2S 1 Circuit Low/High Voltage
STEP
OPERATION
SOLVED
FOLLOWING STEP
1
Connect the diagnostic tool, and ignition on.
next
2
Use multimeter to check whether the connection between
pin B of the oxygen sensor and pin J2-17 of the ECU is open,
and whether the pin B of sensor is short to pin A.
Yes
Harness issue
No
Next
3
Crank the engine and stay idle. Whent the egine gets warm,
use multimeter to check whether the voltage between pin
A and B keeps jumping between 100-900mV.
Yes
Help
No
Next
4
A
、
emssion pipe: block/leakage or not.
B
、
injector: leakage or not
C
、
fuel pressure too big or not
D
、
valve clearance is to small or not
Yes
Engine maintenance
No
Change sensor