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: