Chery QQ6 (S21) / S12LHD. Manual — part 109

11.11 Crankshaft Position Sensor Failure

Failure code: P0016

No.

Operating steps

Result

Follow up steps

1

Put the ignition switch to “ON”.

Next step

Yes

Next step

2

Pull out camshaft position sensor joint on harness,

and then use a multimeter to check if the voltage

between 1# pin of this joint and ground wire is

around 12V (battery voltage).

No

Check circuit and

main power supply

Yes

Next step

3

Pull out camshaft position sensor joint on harness,

and then use a multimeter to check if the voltage

between 2# pin of this joint and ground wire is

around 11.5V (power supply from ECU and the

voltage is below the battery voltage).

No

Check circuit and

ECU

Yes

Repair or replace

the harness

4

Use a multimeter to check if it is break or short

circuit between 79# pin of ECU and 2# pin of

sensor joint.

No

Next step

Yes

Next step

5

Pull out camshaft position sensor joint on harness,

and then use a multimeter to check if it is

conducting between 3# pin of this joint and

ground wire.

No

Replace the sensor

6

Connect the sensor connector and start the engine.

Next step

Yes

Check other part

7

Use a oscillometer to check if an around 6V

square wave signal output is present in 2# signal

cable.

No

Replace the sensor

Note: The camshaft position sensor is an auxiliary sensor and has great effect on emission of the system.

When failure occurs in this sensor, the vehicle will be difficult to start; though the vehicle will be

basically normal after startup, driving restrictive practice will be found on the engine and the maximum

revolution of engine can not exceed 4000rpm.

11.12 Craftshaft Position Sensor Failure

Failure codes: P0321, P0322, P0219

No.

Operating steps

Result

Follow up steps

1

Put the ignition switch to “ON”.

Next step

Yes

Check the circuit

2

Pull out crankshaft position sensor joint on

harness, use a multimeter to check if it is short or

break circuit between 1# pin of this joint and 34#

pin of ECU.

No

Next step

Yes

Next step

3

Pull out crankshaft position sensor joint on

harness, use a multimeter to check if it is short or

break circuit between 3# pin of this joint and 15#

pin of ECU.

No

Check circuit and

ECU

Yes

Repair or replace

the harness

4

Use a multimeter to check if it is break or short

circuit between 79# pin of ECU and 2# pin of

sensor joint.

No

Next step

Yes

Next step

5

Pull out crankshaft position sensor joint on

harness, and then use a multimeter to check if the

two signal cables on the sensor has a resistance

value of around 1000Ω.

No

Replace the sensor

6

Connect the sensor connector and start the engine.

Next step

Yes

Check other part

6

Use an oscillometer to check if signal waveform

output is present in signal cable.

No

Replace the sensor

Note: Crankshaft position sensor is the main sensor of electronic control unit of engine. If crankshaft

position sensor failure occurs, the engine will be difficult to start; acceleration performance of the engine

will be greatly restricted after startup; the maximum revolution of the engine can not exceed 3800rpm;

meanwhile, emission of the engine will deteriorate.

11.12 Ignition Coil Failure

No.

Operating steps

Result

Follow up steps

1

Put the ignition switch to “ON”.

Next step

Yes

Next step

2

Pull out ignition coil joint on harness, and then use

a multimeter to check if the voltage between 3#

pin of this joint and ground wire is an around 12V

battery voltage.

No

Check the circuit

Yes

Check circuit and

ECU

3

Pull out ignition coil joint on harness, and then use

a multimeter to check if it is short or break circuit

between 1# pin of this joint and 5# pin of ECU.

No

Next step

Yes

Check circuit and

ECU

4

Pull out ignition coil joint on harness, and then use

a multimeter to check if it is short or break circuit

between 2# pin of this joint and 2# pin of ECU.

No

Next step

Yes

Next step

5

Check if the resistance of primary coil of the

sensor is around 0.9Ω.

No

Replace the ignition

coil

Yes

Next step

6

Check if the resistance of secondary coil of the

sensor is around 14.5kΩ.

No

Replace the ignition

coil

Yes

Check other part

7

Use an oscillometer to check if secondary ignition

waveform of ignition cable of ignition system is

normal.

No

Replace the ignition

coil

Note: The ignition coil is mainly used to provide ignition system of engine with ignition energy. The

failure rate of the coil itself is very low, but its failure probability can not be completely excluded. When

failure occurs in ignition coil, the ignition energy of engine will be deficient, which may further lead to

such failures as unsteady idle speed of engine and emission deterioration.

11.13 Accelerator Pedal Position Sensor Failure

Failure codes: P2106, P2122, P2123, P2127, P2128, P2138

No.

Operating steps

Result

Follow up steps

1

Put the ignition switch to “ON”.

Next step

Yes

Next step

2

Pull out accelerator pedal position sensor joint on

harness, and then use a multimeter to check if an

around 5V voltage signal is present between 3#,

6# pins of this joint and ground wire.

No

Check the circuit

Yes

Check the circuit

3

Pull out accelerator pedal position sensor joint on

harness, and then use a multimeter to check if it is

short or break circuit between 3#, 6# pins of this

joint and 32#, 33# pins of ECU.

No

Next step

Yes

Check the circuit

4

Pull out accelerator pedal position sensor joint on

harness, and then use a multimeter to check if it is

short or break circuit between 2#, 5# pins of this

joint and 36#, 35# pins of ECU.

No

Next step

Yes

Check the circuit

5

Pull out accelerator pedal position sensor joint on

harness, and then use a multimeter to check if it is

short or break circuit between 4#, 1# pins of this

joint and 16#, 40# pins of ECU.

No

Next step

Yes

Next step

6

Use a diagnostic tester to read signal output of

accelerator pedal position sensor, and then check

if signal 1 increases as opening of accelerator

pedal increases.

No

Replace the sensor

assembly

Yes

Check other part

7

Use a diagnostic tester to read signal output of

accelerator pedal position sensor, and then check

if signal 2 increases as opening of accelerator

pedal increases.

No

Replace the sensor

assembly

Note: This pedal is an integrated circuit device, which can not be processed through repair; therefore,

during maintenance process, the service station can maintain it by means of part replacement and can not

disassemble the sensor.