YG125-30A Maintenance Manual
Engine management system
152
Malfcode
：
P0113
Information
：
IAT Circuit High Voltage
ITEM OPERATION
RESULT
NEXT STEP
1
Connect the diagnostic tool, and ignition on.
Next
2
check whether the data of
‘intake air temperature’ equals to the real intake
air temperature.
Yes
Setp 5
No
Next
3
Remove the connector, and use the multimeter to check whether the
resistance between pin B and D is reasonable according to the temperature.
Yes
Step 5
No
Next
4
Remove the connector and check whether the voltage between pin B and D
is about 5V.
Yes
Next
No
Check harness
5
Check whether the following pins are short to ground or open: J2-8, J2-10 of
the ECU and pin C, D of the connector.
Yes
Change the harness
No
Next
6
Crank the engine and stay idle. Check whether the ‘intake air temperature’
goes up when the engine temperature goes up.
Yes
Help
No
Change the sensor.
Malfcode
：
P0117
Information
：
Coolant/Oil Temperature Sensor Circuit Low Voltage
ITEM OPERATION
RESULT
NEXT STEP
1
Connect the diagnostic tool, and ignition on.
Next
2
check whether the data of
‘engine temperature’ equals to the real
temperature.
Yes
Step 5
No
Next
3
Remove the connector and use the multimeter to check whether the
resistance between pin A and C of the sensor is reasonable according to the
temperature.
Yes
Step 5
No
Next
4
Use the multimeter to measure whether the voltage between A and C is
about 5V.
Yes
Next
No
Check the harness
5
check whether the following pins are short to gound or open: J2-10, J2-14 of
the ECU and pin C and D of the sensor.
Yes
Harness issue
No
Next
6
crank the engine and stay
idle. Check whether the ‘engine temperture’ goes
high when engine get warm.
Yes
Help
No
Change the sensor
Malfcode
：
P0118
Information
：
Coolant/Oil Temperature Sensor Circuit High Voltage or Open
ITEM OPERATION
RESULT
NEXT STEP
1
Connect the diagnostic tool, and ignition on.
Next
2
check whether the data of
‘engine temperature’ equals to the real
temperature.
Yes
Step 5
No
Next
3
Remove the connector and use the multimeter to check whether the
resistance between pin A and C of the sensor is reasonable according to the
temperature.
Yes
Step 5
No
Next
4
Use the multimeter to measure whether the voltage between A and C is
about 5V.
Yes
Next
No
Check the harness
5
check whether the following pins are short to battery or open: J2-10, J2-14
of the ECU and pin C and D of the sensor.
Yes
Harness issue
No
Next
6
crank the engine and stay
idle. Check whether the ‘engine temperture’ goes
high when engine get warm.
Yes
Help
No
Change the sensor
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