Chery S11 / Chery QQ. Manual - part 233

 Chery  QQ  Maintenance Manual                   465 EFI System

 

 

 

 

The diagram of MAP and IAT 

 
 

No. 

Next Steps 

Test result 

Next step 

1 

Turn on ignition key. 

 

Next   

Yes Next 

2 

Put out the connectors on MAP and IAT 
harness.Check if the voltage between pin 
1 and pin 3 is 5 V. 

No 4 

Yes  

Replace ECU 

3 

。

Check if the resistance between pin 1 

and pin 2 is suit to the temperature ( see 
related parts in this manual). 

No  

 
Replace sensor 

Yes 

Repair or replace 
harness 

4 

Connect the adaptor between ECU and 
harness. Check if open or short between 
pin 30, pin 12, pin 44 on ECU and pin 1, 
pin 3, pin 2 separately. 

No Replace 

ECU 

 
 
 
 
 
 
 
 
 
 
 
 

 

29

 Chery  QQ  Maintenance Manual                   465 EFI System

 

 

DTC 19    Coolant temperature sensor 

 

 

 

                                                                   
 

The diagram of CTS 

 
 

No. 

Next  Steps 

Test result Next step 

1 

Turn on ignition key. 

 

Next 

Yes tNext 

2 

Put out the connector on CTS harness, check if 
the voltage between pin 1 and pin 2 is 5V. 
 

No 4 

Yes Replace 

ECU 

3 

Check if the resistance between pin 1 and pin 2 
is suit to the temperature ( see related parts in 
this manual). 
 

No  

Replace sensor 

Yes 

Repair or replace 
harness 

4 

Connect the adaptor between ECU and harness. 
Check if open or short between pin 30, pin 45 
on ECU and pin 1, pin 2 separately. 

No Replace 

ECU 

 
 
 
 
 
 
 
 
 
 
DTC   22、23、24（、21）  in CYL 1, CYL 2, CYL 3 (CYL 4) injector driver 

 

30

 Chery  QQ  Maintenance Manual                   465 EFI System

 

 

 

 
 

The diagram of injector 

 

No.   

Next Steps 

Test result 

Next step 

1 

Turn on ignition key without engine run. 

 

Next 

2 

Put out al connectors on injector harness; 

connect two probes of multimeter on pin 1 and 

engine ground. 

 Next 

Yes 

Repeat step 2 

Yes 6 

3 

Turn on ignition key. See if the display on 

multimeter is 12 V for 1 second once turning on 

the key. 

No Next 

Yes 

Repair or replace 

harness 

4 

Use multimeter to check if open or short 

between pin 87 on pump relay output and pin 1 

on each injector. 

No  

Next 

5 

Repair or replace pump replay, main repalay 

and circuit. 

Yes 

Repair or replace 

harness 

 

31

 Chery  QQ  Maintenance Manual                   465 EFI System

 

 

6 

Connect the adaptor between ECU and harness. 

Check if open or short between pin 17, pin 16, 

pin 35, pin 34 on ECU and pin 2 on each 

injector separately. 

No Next 

Yes 

Repeat step 7 

Yes Next 

7  

Use multimeter to check if resistance between 

pin 1 and pin 2 on injector is 12—16V in 

20 C

　

. 

 

No  

Replace 

electromagnetism

injector 

Yes 

Repeat step 8 

8 

Reinsert all injector connector. Put N shaft and 

run engine at idle. Put out each injector 

connector in turn and check if the vibration of 

engine becoe serious. 

No Replace 

ECU 

 
 
 
DTC 25    Canistor control driver 

 
 

 

Main relay
Pin 87 

canistor 
control

 

valve

 
 
 
 
 

 

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