Lifan 620. Manual - part 11

II. LF TRITEC Engine

 

1. DTC: P0112, Intake Air Temperature Sensor Temperature Too Low    (see Table 1-14) 

 

Table 1-14 

 

S/N Operation  Test 

Results 

Actions 

1 

Connect the diagnostic instrument and adapter, and turn the 

ignition switch to ON. 

 Next 

step 

2 

3 

4 

5 

6 

 
 
 
 
 
 
 
 
 

45

2. DTC: P0113, Intake Air Temperature Sensor Temperature Too High    (see Table 1-15) 

 

Table 1-15 

 

S/N Operation Test 

Results 

Actions 

1 

Connect the diagnostic instrument and adapter, and turn 

the ignition switch to ON. 

 Next 

step 

Yes 

Go to step 5 

2 

Check the “intake air temperature” as per the data flow. 

3 

4 

5 

6 

 
 
 
 
 
 
 
 
 
 
 
 
 

46

3. DTC: P0117, Engine Coolant Temperature Sensor Temperature Too Low    (see Table 1-16) 

Table 1-16 

S/N Operation Test 

Results 

Actions 

1 

Connect the diagnostic instrument and adapter, and turn the 

ignition switch to ON. 

 Next 

step 

Yes 

Go to step 6 

2 

Check the “coolant temperature” as per the data flow. Does it 

match with the temperature of the engine (related to the 

temperature of the engine at that moment)? 

Note: If the temperature is often -40 , open circuit may occur.

℃

No Next 

step 

3 

4 

5 

1 

2 

3 

4 

Measure the voltage between pin 1# and pin 2# with a 

multimeter. Is the voltage about 5V? 

No Next 

step 

Yes 

Repair or replace 

harness 

5 

Check for short to ground between pin 39#, 35# of the ECU 

and the pin 1#, 2# of the sensor with a multimeter. 

No Next 

step 

Yes Diagnosis 

help 

6 

Start the engine, and keep idle speed. Check the “coolant 

temperature” on the diagnostic instrument. At this moment, the 

temperature will increase with the rise of the engine coolant 

temperature. 

No Replace 

sensor 

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5. DTC: P0122, Throttle Position Sensor Circuit Voltage Too Low    (see Table 1-18) 

 

Table 1-18 

S/N Operation  Test 

Results 

Actions 

1 

Connect the diagnostic instrument and adapter, and turn the 

ignition switch to ON. 

 Next 

step 

Yes Next 

step 

2 

Check the “throttle absolute openning” as per the data flow. 

Does it within 4%-10% (related to vehicle model)? 

No 

Go to step 5 

Yes Next 

step 

3 

Step on the accelerator, and check the “throttle absolute 

4 

5 

6 

 

1 

2 

3 

4 

Yes 

harness 

5 

Check for open circuit or short to power supply between pin 

17#, 32#, 16# of the ECU and the pin 1#, 2#, 3# of the sensor 

with a multimeter. 

No Next 

step 

Yes Replace 

sensor 

6 

Measure the voltage between pin 1# and pin 2# with a 

multimeter. Is the voltage about 5V? 

No Diagnosis 

help 

 

 

 
 
 

48