Chery A15. Manual — part 266

Terminal B and ECM Terminal A16 is
within the range of 0-2 Ω.

5

Measure if the resistance between sensor
Terminal B and the ground circuit is
infinite.

To Step 6

To Step 9

6

Fix all fittings and clear away the
troubleshooting code.
Carry out a road test at a speed of 5km/h
and above and see if the troubleshooting
code is displayed.

To Step 7

Fault is
eliminated

7

Replace the crank angle sensor and see if
P0335 still exists.

To Step
11

8

Repair the open circuit between the sensor
and the ground circuit

9

Repair the open circuit between the sensor
and the ECM or its ground fault.

10

Repair the open circuit between the sensor
and the ECM.

11

Replace the engine control module.
Confirm the repair.

Ten. Troubleshooting code – camshaft position sensor
1. Troubleshooting code setup conditions and emergency scheme
P0342 Low camshaft position signal

P0343 High camshaft position signal

Ju

dg

m

en

t

co

nd

iti

on

s

• Engine is running

Ju

dg

m

en

t

co

nd

iti

on

s

• Engine is running

E

m

er

ge

nc

y

sc

he

m

e

• Turn on the fault indicator light

until the fault is eliminated

• There is a 50% possibility that

the fuel injection sequence be
misplaced by 360 degrees

E

m

er

ge

nc

y

sc

he

m

e

• Turn on the fault indicator light

until the fault is eliminated

• There is a 50% possibility that

the fuel injection sequence be
misplaced by 360 degrees

2. Relevant computer terminals and measurement

Wiring terminal

ECM

Camshaft
position sensor

Normal measurement signal

5V reference voltage

27

C

5V

Camshaft signal

30

A

0-5V square wave

Sensor signal ground

37

B

0V

3. Troubleshooting procedure

Possible cause

Reference maintenance
scheme

1) Loosened fittings
2) Open circuit of reference voltage circuit
3) Open circuit of signal ground
4) Open circuit of camshaft signal circuit
5) Sensor damage
6) Fault of ECM terminal

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

Eleven. Troubleshooting code – ignition coil

1. Troubleshooting code setup conditions and emergency scheme
P0351 Short circuit between the ignition
coil Cylinder 1-4 drive circuit and the
power source anode

P0351 Open circuit of ignition coil Cylinder
1-4 drive circuit or its short circuit with the
ground wire

Ju

dg

m

en

t

co

nd

iti

on

s

• Duration 1.25s

Ju

dg

m

en

t

co

nd

iti

on

s

- Duration 1.25s

E

m

er

ge

nc

y

sc

he

m

e

• Turn on the fault indicator light

until the fault is eliminated

• Stop fuel injection into Cylinder

1-4

• Increase the targeted idle speed

to 1200rpm

E

m

er

ge

nc

y

sc

he

m

e

• Turn on the fault indicator light

until the fault is eliminated

• Stop fuel injection into Cylinder

1-4

P0352 Short circuit between the ignition
coil Cylinder 2-3 drive circuit and the
power source anode

P0351 Open circuit of ignition coil Cylinder
2-3 drive circuit or its short circuit with the
ground wire

Ju

dg

m

en

t

co

nd

iti

on

s

• Duration 1.25s

Ju

dg

m

en

t

co

nd

iti

on

s

- Duration 1.25s

E

m

er

ge

nc

y

sc

he

m

e

• Turn on the fault indicator light

until the fault is eliminated

• Stop fuel injection into Cylinder

2-3

• Increase the targeted idle speed

to 1200rpm

E

m

er

ge

nc

y

sc

he

m

e

• Turn on the fault indicator light

until the fault is eliminated

• Stop fuel injection into Cylinder

2-3

2. Relevant computer terminals and measurement

Wiring terminal

ECM

Ignition coil

Normal measurement signal

System master power
source

\

B 12V

Cylinder 1-4 drive

46,57

C

0-12V similar square wave
signal
Peak inductance >300V

Cylinder 2-3 drive

50,62

A

0-12V similar square wave
signal
Peak inductance >300V

3. Troubleshooting procedure

Step Description

Yes

No

1

Will the troubleshooting procedure be
implemented?

To Step 2

Troubleshooting
procedure

2

Check if the fittings between ignition
module and ECM are detached or if the
terminals are damaged.

Confirm
repair

To Step 3

3

Check if there is open circuit between the
ignition switch and Terminal B or there is
any ground fault.
Check if Terminal C suffers any ground
fault.

Confirm
repair

To Step 4

4

Turn off the ignition switch, detach the
fittings for the ECM and ignition module
and check if the circuit between the ECM
and the ignition module suffers any short
circuit with the power source (anode).

Confirm
repair

To Step 5

5

Check if the circuit between the ECM and
the ignition module suffers any ground
fault.

Confirm
repair

To Step 6

6

Check if the circuit between the ECM and
the ignition module suffers any open
circuit.

Confirm
repair

To Step 7

7

Replace the ignition module.
Check if the fault is cleared away after the
replacement.

To Step 8

8

Replace the ECM and confirm the
replacement.

Twelve. Troubleshooting code – charcoal canister solenoid valve

1. Troubleshooting code setup conditions and emergency scheme
P0443 Short circuit between the charcoal
canister solenoid valve and power source
anode

P0443 Open circuit of charcoal canister
solenoid valve or its ground fault

Ju

dg

m

en

t

co

nd

iti

on

s

• Duration > 2s

Ju

dg

m

en

t

co

nd

iti

on

s

- Duration > 5s

E

m

er

ge

nc

y

sc

he

m

e

• Turn on the fault indicator light

until the fault is eliminated

• Close the charcoal canister

solenoid valve

E

m

er

ge

nc

y

sc

he

m

e

• Turn on the fault indicator light

until the fault is eliminated

• Close the charcoal canister

solenoid valve

2. Relevant computer terminals and measurement

Wiring terminal

ECM

Charcoal
canister
solenoid valve

Normal measurement signal

System master power
source

\

B 12V

Solenoid valve drive

10

A

0-12V square wave