Chery A15. Manual - part 277

1) Blocked air intake system 
 
2) Blocked air intake manifold pressure sensor 
hole 
 
3) Throttle can’t be fully opened 
 
 
4) Blocked spray nozzle 
5) Blocked exhaust system 

1) Clean the intake air passage and 
replace the filter element 
2) Clean the air intake manifold pressure 
sensor hole and replace the sensor if 
necessary. 
3) Adjust the throttle limit screws to 
ensure that the throttle can be fully 
opened. 
4) Clean or replace defected spray nozzle
5) Repair the exhaust system and three-
way catalyst 

 
 

Fault 11 

Insufficient engine power 

Possible cause 

Reference maintenance scheme 

1) Blocked air intake system 
 
2) Throttle can’t be fully opened 
 
 
3) Blocked exhaust system  
 
4) Over resistance of the power transmission 
system 
5) Overheated engine 
6) Blocked spray nozzle 

1) Clean the intake air passage and 
replace the filter element 
2) Adjust the throttle limit screws to 
ensure that the throttle can be fully 
opened. 
3) Repair the exhaust system and three-
way catalyst 
4) Repair relevant components of the 
power transmission system 
5) Repair the engine cooling system 
6) Clean or replace defected spray nozzle

 

Fault 12 

Vehicle runaway during driving 

Possible cause 

Reference maintenance scheme 

1) Creepage of ignition system high-voltage 
cable 
2) Blocked spray nozzle 

1) Fix all fittings again and replace 
damaged parts 
2) Clean or replace defected spray nozzle

 

Fault 13 

Vibration during acceleration 

Possible cause 

Reference maintenance scheme 

1) Creepage of ignition system high-voltage 
cable 

1) Fix all fittings again and replace 
damaged parts 

 
 
 
 
 
 

Fault 14 

Knock 

Possible cause 

Reference maintenance scheme 

 

1) Fuel does not comply with standard 
 
2) Overheated engine 
 
3) Displaced 58x gear ring 

1) Make sure to use fuel whose octane 
rating is higher than that of 90# gasoline
2) Check and repair engine cooling 
system 
3) Make sure that the lower rim of Tooth 
No. 20 is the upper limit of Cylinder 1-4

 

Fault 15 

Delayed combustion (overheated exhaust) 

Possible cause 

Reference maintenance scheme 

1) Cylinder fails to get ignited  
 
 
 
2) Engine exhaust valve fault 
3) Displaced 58x gear ring 

1) Resume cylinder ignition right away. 
If it can’t be ignited temporarily, take off 
the spray nozzle control plug of the 
cylinder to protect the three-way catalyst
2) Repair the engine 
3) Make sure that the lower rim of Tooth 
No. 20 is the upper limit of Cylinder 1-4

 

Fault 16 

Exhaust does not comply with the standard subject to working conditions 
test 

Possible cause 

Reference maintenance scheme 

1) Abnormal engine working status 
2) Abnormal control of engine management system 
 
 
 
3) Leakage in the fittings between cylinder cover and 
three-way catalyst 
4) Leakage through the threads of the oxygen sensor 
5) Detached vacuum pipe of the fuel pressure regulator
6) Fuel pressure regulator fault 
7) Overused three-way catalyst and oxygen sensor 
 
 
8) Three-way catalyst and oxygen sensor are infected 
with heavy metals or damaged by overheating.  
9) Three-way catalyst and oxygen sensor are infected 
with sulfur.  
10) Ground fault of the ECM or engine management 
system 
11) ECM casing is grounded 
12) Displaced 58x gear ring 

1) Repair the engine 
2) Repair the engine management system as 
per <Attachment 1: Off-line Trial-run 
Procedure & Technical Conditions for Vehicle 
Series> 
3) Screw fast relevant bolts and replace the 
gaskets if necessary. 
4) Fasten the oxygen sensor 
5) Repair or replace 
6) Replace the fuel pressure regulator 
7) The life span is longer than 80,000km 
under normal circumstances. Replace if 
necessary.  
8) Replace the catalyst and oxygen sensor. 
 
9) Run the car at 3

rd

-gear at a speed of 70km/h 

for 10 minutes. 
10) Correct the ground wire position of the 
system. 
11) Insulate ECM casing 
12) Make sure that the lower rim of Tooth No. 
20 is the upper limit of Cylinder 1-4 

 
 
 

Fault 17 

Exhaust does not comply with the standard subject to simple working 
conditions test 

Possible cause 

Reference maintenance scheme 

 

1) The vehicle is not sufficiently heated up 
2) Others 

1) Warm up the engine 
2) Others please see - Exhaust does not 
comply with the standard subject to 
working conditions test 

 

Fault 18 

Excessive content of CO and HC at idle speed 

Possible cause 

Reference maintenance scheme 

1) The vehicle is not sufficiently heated up 
 
2) Others 

1) Warm up the engine; carry out high-
idle-speed test first of all 
2) Others please see - Exhaust does not 
comply with the standard subject to 
working conditions test 

 

Fault 19 

Abnormal fuel evaporation and exhaust 

Possible cause 

Reference maintenance scheme 

1) Cracked connecting pipe of the charcoal 
canister 
2) Damaged canister 
3) Canister is undersized. 
4) Canister solenoid valve wire harness fault 
5) Loosened fittings 
6) Damaged canister solenoid valve 
7) ECM fault 

1) Replace the connecting pipe 
 
2) Replace the canister 
3) Choose the appropriate canister 
4) Repair wire harness 
5) Fix again 
6) Replace the canister solenoid valve 
7) Replace the ECM 

 

Fault 20 

Abnormal fuel consumption 

Possible cause 

Reference maintenance scheme 

1) Incorrect measurement method 
2) Vehicle status 
3) Engine status 
4) Damaged thermostat 
5) Cooling fluid temperature sensor fault 
 
6) Engine management system status 
 
7) Spray nozzle leakage 
8) Damaged fuel pressure regulator 
9) Oxygen sensor fault 
10) ECM fault 

1) Apply reliable measurement method 
2) Repair the vehicle 
3) Repair the engine 
4) Replace the thermostat 
5) Replace the cooling fluid temperature 
sensor 
6) Repair the engine management system 
as per <section on engine data analysis>
7) Replace damaged spray nozzle 
8) Replace the regulator 
9) Replace the oxygen sensor 
10) Replace the ECM 

 
 

 

 
Chapter One: Clutch 
Section One: General Description 
 
Dry and single-disk type and 

normally-engaged

 hydraulic clutch with diaphragm spring 

is adopted for the car. The diaphragm spring is a conical spiral spring with one group of 
internal conical spirals and its outer diameter is a complete circle.  
 
 
 
 
 
 
 
 
 
 
 
The wearing plate assembly consists of four damping springs, which is installed onto the 
input shaft of gearbox by splines.  
The clutch pressure plate assembly is fixed onto the flywheel. The diaphragm spring is 
installed in such a way that when the release bearing is retracted; the diaphragm spring 
pushes the pressure plate to engage with the flywheel (the wearing plate assembly is in 
between). This makes the clutch engaged.  
When the clutch pedal is stepped down, the release bearing moves forward to push the 
diaphragm spring tapered head. The diaphragm spring pulls the pressure plate to 
disengage the transmission between flywheel and gearbox input shaft through the 
wearing plate assembly.  
The schematic diagram of the hydraulic clutch assembly is as follows: