um CHILL 125 cc. Service Manual page 33

Malfunction code：P0123
Information：TPS Circuit High Voltage
ITEM OPERATION
1 Connect the diagnostic tool, and ignition on.
2 Check whether the data of 'Throttle opening' is between 0 % - 1 %.
3 Open the throttle to 100% slowly, check whether the data of 'throttle opening' goes
to between 90%-100%.
4 Repeat Step 3, check whether the data jumps when open the throttle slowly.
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.
6 Use multimeter to check whether the voltage between pin A and B is about 5V.
CHILL 125 cc. SERVICE MANUAL AND EFI DIAGNOSTIC
RESULT
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
NEXT STEP
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Step 5
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Step 5
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Change the sensor
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Harness issue
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Step 5
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