CBF 125 AIR COOLING ENGINE SERVICE MANUAL
RENEGADE SPORT & SCRAMBLER X 125 EFI
107
Malfcode：P0123
Information：TPS Circuit High Voltage
Connect the diagnostic tool, and ignition on.
Check whether the data of ‘Throttle opening’ is bettwen
0%-1%.
Open the throttle to 100% slowly, check whether the data
of ‘throttle opening’ goes to between 90%-100%.
Repeat Step 3, chek whether the data jumps when open
the throttle slowly.
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.
Use multimeter to check whether the voltage between pin
A and B is about 5V.
Malfcode：P0131/P0132
Information：O2S 1 Circuit Low/High Voltage
Connect the diagnostic tool, and ignition on.
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.
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.
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
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