Chery A15. Manual - part 265

5 

Turn off the ignition switch and unfix the 
spray nozzle fittings. 
Measure if the resistance of each spray 
nozzle is 17 Ω with an ohmmeter (Figure 
18-27) 

To Step 6 

To Step 7 

6 

Connect an ohmmeter to each cylinder 
spray nozzle fitting, ground and measure 
with an ohmmeter if the resistance 
between each spray nozzle and the ground 
circuit is higher than 10000 Ω. 

To Step 8 

To Step 7 

7 

Replace the spray nozzle 
Confirm the repair 

 

 

8 

Replace the engine control module and 
confirm the repair. 

 

 

 
Seven. Troubleshooting code – fuel pump relay 
1. Troubleshooting code setup conditions and emergency scheme 
P0230 Short circuit between the fuel pump 
relay and power source anode 

P0230 Open circuit of fuel pump relay or its 
short circuit with the ground 

Ju

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- Duration > 1.5625s 

Ju

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on

s 

- Duration > 1.5625s 

E

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•  Turn on the fault indicator light 

until the fault is eliminated  

•  Nil 

E

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•  Turn on the fault indicator light 

until the fault is eliminated  

•  Nil 

 
2. Relevant computer terminals and measurement 

Wiring terminal 

ECM Pressure/temperature 

sensor 

Normal measurement signal

System master power source 

\  See electrical system 

description 

12V 

Relay drive 

09  See electrical system 

description 

0V (in operation), 12V (out 
of operation) 

 
 
 
 
 
 
 
 
 

 

 
3. Troubleshooting procedure 

Step Description 

Yes 

No 

1 

Will the troubleshooting procedure be 
implemented? 

To Step 2 

Troubleshooting 
procedure 

2 

Check if the fuel pump relay fuse is 
broken.  

To Step 9 

To Step 3 

3 

Unfix the fuel pump relay and measure if 
the voltage between the fuel pump relay 
circuit 30 and the ground circuit is higher 
than 10V.  

To Step 4 

To Step 10 

4 

Unfix the ECM fittings and measure if the 
resistance between Terminal 9 and fuel  
pump relay 86 is within the range of 0-2
Ω

 

To Step 5 

To Step 11 

5 

Measure if the resistance between ECM 
Terminal 9 and the ground circuit is 
infinite.  

To Step 6 

To Step 8 

6 

Measure if the resistance of fuel pump 
relay coil is within the range of 80-120 Ω

To Step 7 

To Step 12 

7 

If the faults occur intermittently, fix all 
fittings and eliminate the troubleshooting 
codes.  
Fix the diagnostic instrument and carry 
out a road test at a speed of over 5km and 
check if the troubleshooting code is 
displayed.  

To Step 8 

Fault is 
eliminated 

8 

Replace the engine control module and 
confirm if the repair is completed. 

Troubleshooting 
procedure 

 

9 

Repair the ground fault of the fuel pump 
relay fuse and confirm the repair. 

 

 

10 

Repair the open circuit between relay 
fuses and confirm the repair.  

 

 

11 

Repair the open circuit between the relay 
and the ECM and confirm the repair.  

 

 

12 

Replace the fuel pump relay and confirm 
the repair.  

 

 

 
 
 
 
 
 
 
 

 

 
Eight. Troubleshooting – knock sensor 
1. Troubleshooting code setup conditions and emergency scheme 
P0325 Bad connection of knock sensor 

Ju

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•  Engine speed > 2000rpm 

•  MAP > 50kPa 
•  Duration > 5s 

E

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•  Turn on the fault indicator light 

until the ignition switch is turned 
off. 

- Use safety ignition advance angle 
table 

 
2. Relevant computer terminals and measurement 

Wiring terminal 

ECM 

Oxygen sensor Normal measurement signal

Knock signal: 

23 

1 

0-1V 

Sensor signal ground 

37 

2 

0V 

 
3. Troubleshooting procedure 

Possible cause 

Reference maintenance 
scheme 

1) Loosened fittings 
2) Open circuit of knock signal cable 
3) Short circuit of sensor signal ground 
4) Short circuit between knock signal circuit and other 
circuits 
5) Sensor damage 
6) Fault of the ECM output control terminal of this signal 

1) Fix again and fasten 
2) Repair the wire harness 
3) Repair the wire harness 
4) Repair the wire harness 
5) Replace the sensor 
6) Replace the ECM 

 

Troubleshooting
code 

 P0607 

Knock control system failure 

Emergency control 
scheme setup 

•  Turn on the fault indicator light until the fault is eliminated

•  Ignition advance angle will be delayed (safety ignition 

advance control is adopted) 

Wiring terminal 

ECM 

Normal measurement signal 

ECM 

ECM internal fault 

\

 

Judgment conditions 

Possible cause 

Reference maintenance scheme 

- 

1) ECM fault 

1) Replace the ECM 

 
 
 
 
 
 
 
 
 
 

 

 
 
Nine. Troubleshooting code – crank position sensor 
1. Troubleshooting code setup conditions and emergency scheme 
P0335 No signal from 58x crank shaft 
position sensor 

P0335 Wrong signal from 58x crank shaft 
position sensor 

Ju

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•  Start the engine 

•  No engine speed signal 
•  MAP is decreased to 2.9509kPa 

•  System voltage is lowered by 

0.8V 

•  Vehicle speed < 4km/h 
•  Duration > 2s 

Ju

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•  Engine is running. 

•  The quantity of teeth detected by 

ECM is not 58 for five 
continuous cycles 

 
Continued 

E

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•  Turn on the fault indicator light 

until the fault is eliminated  

•  Nil 
•  Engine fails to start up 

E

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y 

sc

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•  Turn on the fault indicator light 

until the fault is eliminated  

•  Nil 

 
2. Relevant computer terminals and measurement 

Wiring terminal 

ECM 

Oxygen sensor Normal measurement signal

High crank shaft signal 

41 

A 

> 400mV sine wave 
 (with sensor B) 

Low crank shaft signal 

33 

B 

> 400mV sine wave 
 (with sensor A) 

System ground wire 

06,21,29,45 C 

0V 

 
3. Troubleshooting procedure 

Step Description 

Yes 

No 

1 

Will the troubleshooting procedure be 
implemented? 

To Step 2 

Troubleshooting 
procedure 

2 

Unfix the crank angle sensor and measure 
if the resistance between sensor Terminal 
C and the ground circuit is within the 
range of 0-2Ω. 

To Step 3 

To Step 8 

3 

Turn on the ignition switch but the engine 
will not be started.  
Measure if the voltage between the sensor 
Terminal A and the ground circuit is 
within the range of 1.0-1.5V. 

To Step 4 

To Step 9 

4 

Turn off the ignition switch and unfix the 
ECM fittings.  
Measure if the resistance between sensor 

To Step 5 

To Step 10