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Chery Tiggo T11 LHD. Manual - part 56

Chery T11 Service Manual Electric Injection System

T11 Oxygen Sensor

Failure Code: P0130-4

No oxygen sensor signal

Set emergency control scheme:  Switch on the failure lamp till the failure disappears

 The air-fuel-ratio can’t be closed-loop controlled

Connection terminal:

20U

Heating-type

Oxygen Sensor

Normal

Measurement Signal

System main power supply:

12V

Heating drive:

Oxygen sensor’s high signal:

0 to 1000mV

fluctuation

Oxygen sensor’s low signal:

Condition for Determination

Possible Reason

Actions

360.24mV < oxygen sensor signal <

538.19mV

Engine operation time > 40 s

No TPS and MAP failure

Coolant temperature > 72℃

Enter the closed-loop fuel control state

TPS > 10.156%

Failure duration > 15 s

1) Unreliable connection of the

connecting parts

2) Open circuit of sensor signal

circuit

3) Sensor poisoning or failure due

to over-heating

4) ECM’s this signal input interface

failure

1) Connect again

2) Repair harness

3) Replace sensor

4) Replace ECM

Main Relay

Chery T11 Service Manual Electric Injection System

Failure Code:

P0135-1

Short circuit of oxygen sensor heating circuit to the

positive electrode of power supply

Set emergency control scheme:  Switch on the failure lamp till the failure disappears, and

turn off the ignition switch

 System closed-loop operating time postponed

Connection terminal:

MT 20U

Heating-type

Oxygen Sensor

Normal

Measurement Signal

System main power supply:

12V

Heating drive:

Oxygen sensor’s high signal:

0 to 1000mV

fluctuation

Oxygen sensor’s low signal:

Condition for Determination

Possible Reason

Actions

Failure duration > 1 s

1) Short circuit of heating drive

circuit to the positive electrode

of power supply

2) Sensor damaged
3) ECM’s this signal input interface

failure

1) Repair harness

2) Replace sensor

3) Replace ECM

Failure Code:

P0135-2

Open circuit of oxygen sensor heating circuit or short

circuit to earth

Set emergency control scheme:  Switch on the failure lamp till the failure disappears, and

turn off the ignition switch

 System closed-loop operating time postponed

Connection terminal:

20U

Heating-type

Oxygen Sensor

Normal

Measurement Signal

System main power supply:

12V

Heating drive:

Oxygen sensor’s high signal:

0 to 1000mV

fluctuation

Oxygen sensor’s low signal:

Condition for Determination

Possible Reason

Actions

No main relay failure

Failure duration > 1 s

1) Unreliable connection of the

connecting parts

2) Open circuit of harness’s this

heating drive circuit

3) Short circuit of harness’s this

heating drive circuit to earth

4) Sensor damaged
5) ECM’s this signal input interface

failure

1) Connect again

2) Repair harness

3) Repair harness

4) Replace sensor

5) Replace ECM

Chery T11 Service Manual Electric Injection System

Failure Code:

P0170-1

Over-long oxygen sensor indication of time of rich

air-fuel-ratio

Set emergency control scheme:  Switch on the failure lamp till the failure disappears

 The air-fuel-ratio can’t be closed-loop controlled

Connection terminal:

20U

Heating-type

Oxygen Sensor

Normal

Measurement Signal

System main power supply:

12V

Heating drive:

Oxygen sensor’s high signal:

0 to 1000mV

fluctuation

Oxygen sensor’s low signal:

Condition for Determination

Possible Reason

Actions

Oxygen sensor signal > 998.26mV

Engine operation time > 40 s

No TPS and MAP failure

Coolant temperature > 72℃

Enter the closed-loop fuel control state

TPS > 10.156%

Failure duration > 15 s

1) Short circuit of sensor signal

circuit to 5V or 12V circuit

2) Sensor damaged
3) ECM’s this signal input interface

failure

1) Repair harness

2) Replace sensor

3) Replace ECM

Failure Code:

P0170-2

Over-long oxygen sensor indication of time of lean

air-fuel-ratio

Set emergency control scheme:  Switch on the failure lamp till the failure disappears

 The air-fuel-ratio can’t be closed-loop controlled

Connection terminal:

20U

Heating-type

Oxygen Sensor

Normal

Measurement Signal

System main power supply:

12V

Heating drive:

Oxygen sensor’s high signal:

0 to 1000mV

fluctuation

Oxygen sensor’s low signal:

Condition for Determination

Possible Reason

Actions

Oxygen sensor signal < 52.083mV

Engine operation time > 40 s

No TPS and MAP failure

Coolant temperature > 72℃

Enter the closed-loop fuel control

state

TPS > 10.156%

Failure duration > 15 s

1) Short circuit of sensor signal

circuit to earth

2) Sensor high/low signal circuit

reverse

3) Sensor damaged
3) ECM’s this signal input interface

failure

1) Repair harness

2) Repair harness

3) Replace sensor

4) Replace ECM

Chery T11 Service Manual Electric Injection System

T11 Fuel Injector Group

Failure Code: P0201-0

Fuel injector A (No 1 cylinder) circuit failure

P0202-0

Fuel injector B (No 3 cylinder) circuit failure

P0203-0

Fuel injector C (No 4 cylinder) circuit failure

P0204-0

Fuel injector D (No 2 cylinder) circuit failure

Set emergency control scheme:  Switch on the failure lamp till the failure disappears

 NULL

Connection terminal:

20U

Fuel Nozzle

Normal

Measurement Signal

System main power supply:

12V

Fuel injector A (No 1 cylinder):

0 to 12V approx.

square

Fuel injector B (No 3 cylinder):

0 to 12V approx.

square

Fuel injector C (No 4 cylinder):

0 to 12V approx.

square

Fuel injector D (No 2 cylinder):

0 to 12V approx.

square

Condition for Determination

Possible Reason

Actions

Ignition switch is turn on

Fuel pump operation normal

Ignition voltage > 10V

1) Short

circuit

corresponding nozzle circuit

to the positive electrode of

power supply or to earth

2) Open

circuit

corresponding nozzle circuit

3) Unreliable Sensor high/low

signal circuit reverse

4) Nozzle circuit damaged

5) ECM’s this signal output

interface failure

1) Repair harness

2) Repair harness

3) Connect again

4) Replace

5) Replace ECM

Main Relay

Content .. 54 55 56 57 ..