um CHILL 125 cc. Service Manual page 28

Malfunction code：P0112
Information：IAT Circuit Low Voltage
ITEM OPERATION
1 Connect the diagnostic tool, and ignition on.
2 Check whether the data of 'intake air temperature' equals to the real intake air
temperature.
3 Remove the connector, and use the multimeter to check whether the resistance
between pin B and D is reasonable according to the temperature.
4 Remove the connector and check whether the voltage between pin B and D is about
5V.
5 Check whether the following pins are short battery: J2-8, J2-10 of the ECU and pin C,
D of the connector.
6 Crank the engine and stay idle. Check whether the 'intake air temperature' goes up
when the engine temperature goes up.
CHILL 125 cc. SERVICE MANUAL AND EFI DIAGNOSTIC
RESULT
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
NEXT STEP
NEXT STEP
Step 5
Next
Step 5
Next
Next
Check harness
Change the harness
Next
Help
Change the sensor.
28