Chery Tiggo T11 LHD. Manual — part 55

Chery T11 Service Manual Electric Injection System

33

T11 Water Temperature Sensor

Failure Code:

P0115-1

Too-low coolant temperature sensor signal

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

 Apply the intake temperature during startup, gradually

increase up to 79.5℃ and then keep this temperature.

Connection terminal:

MT

20U

Coolant

Temperature

Sensor

Normal

Measurement Signal

Coolant temperature signal:

43

B

0.5 to 4.5V

Sensor signal earth:

05

A

0V

Condition for Determination

Possible Reason

Actions

Engine operation time > 10 s

CTS < -38.25℃

Failure duration > 2 s

1) Unreliable

connection

of

the

connecting parts

2) Open circuit of temperature signal

circuit

3) Open circuit of sensor signal to

earth

4) Short circuit of temperature signal

circuit to the positive electrode of

power supply

5) Sensor damaged

6) ECM’s this signal input interface

failure

1) Connect again

2) Repair harness

3) Repair harness

4) Repair harness

5) Replace sensor

6) Replace ECM

To Instrument

Chery T11 Service Manual Electric Injection System

34

Failure Code:

P0115-2

Over-high coolant temperature sensor signal

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

 Apply the intake temperature during startup, gradually

increase up to 79.5℃ and then keep this temperature.

Connection terminal:

MT

20

MT

20U

Coolant

Temperature

Sensor

Normal

Measurement Signal

Coolant temperature signal:

34

43

B

0.5 to 4.5V

Sensor signal earth:

37

05

A

0V

Condition for Determination

Possible Reason

Actions

Engine operation time > 2 s

CTS > 135℃

Failure duration > 2 s

1) Short circuit of temperature

signal circuit to earth

2) Sensor damaged

3) ECM’s this signal input interface

failure

1) Repair harness

2) Replace sensor

3) Replace ECM

Chery T11 Service Manual Electric Injection System

35

T11 Throttle Position Sensor

Failure Code: P0120-1

Over-high throttle sensor signal

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

 During idle, set the opening of throttle position sensor as

0%; for other speeds, the opening of throttle position sensor

changes as speed.

 The throttle position sensor automatic reset function pauses
 The function to clear the remained fuel and air in a cylinder

pauses.

Connection terminal:

MT

20U

Throttle Position Sensor

Normal

Measurement Signal

5V reference voltage:

20

A

5V

Throttle position signal:

24

C

0.5 to 4.5V

Sensor signal earth:

05

B

0V

Condition for Determination

Possible Reason

Actions

Engine operation, but speed < 3000

rpm

No MAP failure, and MAP < 70 kPa

Failure duration > 2 s

1) Short circuit of sensor signal

circuit to the positive electrode of

power supply or the 5V reference

voltage circuit

2) Sensor damaged

3) ECM’s this signal input interface

failure

1) Repair harness

2) Replace sensor

3) Replace ECM

Chery T11 Service Manual Electric Injection System

36

Failure Code: P0120-2

Too-low throttle sensor signal

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

 During idle, set the opening of throttle position sensor as

0%; for other speeds, the opening of throttle position sensor

changes as speed.

 The throttle position sensor automatic reset function pauses
 Clear function pauses.

Connection terminal:

MT 20

MT

20U

Throttle Position Sensor

Normal

Measurement Signal

5V reference voltage:

36

20

A

5V

Throttle position signal:

26

24

C

0.5 to 4.5V

Sensor signal earth:

37

05

B

0V

Condition for Determination

Possible Reason

Actions

Failure duration > 2 s

1) Unreliable

connection

of

the

connecting parts

2) Open circuit of sensor signal

circuit

3) Short circuit of sensor signal

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