Chery Tiggo T11 LHD. Manual — part 60

Chery T11 Service Manual Electric Injection System

53

Failure Code:

P0480-2

Open circuit of radiator low-speed fan relay drive circuit or

short circuit to earth

Set emergency control scheme:

 Switch on the failure lamp till the failure disappears
 NULL
 Fan doesn’t operate (open circuit), till the water temperature

increases to 98℃ and then the high-speed fan activates

 Fan operates normally (short circuit to earth)

Connection terminal:

MT 20U

Low-speed Fan Relay

Normal

Measurement Signal

Battery:

\

Refer to Electrical System

Description

12V

Relay drive:

67

Refer to Electrical System

Description

0V (Operating) and

12V (Stop)

Condition for Determination

Possible Reason

Actions

Failure duration > 3 s

1) Unreliable

connection

of

the

connecting parts

2) Short circuit of relay drive circuit to

the negative electrode of power

supply

3) Open circuit of relay drive circuit

4) Open circuit with the battery

connection circuit

5) Relay damaged

6) ECM failure

1) Connect again

2) Repair harness

3) Repair harness

4) Repair harness

5) Replace relay

6) Replace ECM

Failure Code:

P0481-1

Short circuit of radiator high-speed fan relay drive circuit to

the positive electrode of power supply

Set emergency control scheme:

 Switch on the failure lamp till the failure disappears
 NULL

Connection terminal:

MT 20U

High-speed Fan Relay

Normal Measurement

Signal

Battery:

\

Refer to Electrical System

Description

12V

Relay drive:

50

Refer to Electrical System

Description

0V (Operating) and

12V (Stop)

Condition for Determination

Possible Reason

Actions

Failure duration > 3 s

1) Short circuit of relay drive circuit

to the positive electrode of power

supply

2) Relay damaged

3) ECM failure

1) Repair harness

2) Replace relay

3) Replace ECM

Chery T11 Service Manual Electric Injection System

54

Failure Code:

P0481-2

Open circuit of radiator high-speed fan relay drive circuit or

short circuit to earth

Set emergency control scheme:

 Switch on the failure lamp till the failure disappears
 NULL
 Fan operates normally (short circuit to earth)

Connection

terminal:

MT 20U

High-speed Fan Relay

Normal

Measurement Signal

Battery:

\

Refer to Electrical

System Description

12V

Relay drive:

50

Refer to Electrical

System Description

0V (Operating) and

12V (Stop)

Condition for Determination

Possible Reason

Actions

Failure duration > 3 s

1) Unreliable connection of the connecting

parts

2) Short circuit of relay drive circuit to the

negative electrode of power supply

3) Open circuit of relay drive circuit

4) Open circuit with the battery connection

circuit

5) Relay damaged

6) ECM failure

1) Connect again

2) Repair harness

3) Repair harness

4) Repair harness

5) Replace relay

6) Replace ECM

Chery T11 Service Manual Electric Injection System

55

T11 Vehicle Speed Sensor

Failure Code: P0500-0

No vehicle speed sensor signal

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

 NULL
 It is possible to take some driving limit measures

Connection terminal:

MT

20U

Vehicle Speed Sensor

Normal

Measurement Signal

Sensor signal earth:

03

/

0 to 12V square

wave

Condition for Determination

Possible Reason

Actions

Engine operation

Vehicle speed < 2 km/h

MAP < 25.82 kPa

1,200 rpm < engine speed < 5000 rpm

Throttle closed

Failure duration > 5 s

1) Unreliable connection of the

connecting parts

2) Interrupt of signal circuit from

the automatic transmission to

instruments

3) Interrupt of harnesses from

instruments to ECM

4) Vehicle speed sensor damaged

5) Instrument failure

6) ECM failure

1) Connect again

2) Replace flexible

shaft or signal

wire

3) Repair harness

4) Replace vehicle

speed sensor

5) Repair

or

replace

instrument

6) Replace ECM

Chery T11 Service Manual Electric Injection System

56

T11 Idle Stepper Motor

Failure Code:

P0505-0

Idle Control Error

Set emergency control scheme:

 Switch on the failure lamp till the failure disappears
 Pause the idle control

Connection terminal:

MT 20U

Idle Control Valve

Normal Measurement

Signal

Idle control valve A-high:

54

D

0 to 12V square wave

(with idle valve C)

Idle control valve A-low:

53

C

0 to 12V square wave

(with idle valve D)

Idle control valve B-high:

33

B

0 to 12V square wave

(with idle valve A)

Idle control valve A-low:

34

A

0 to 12V square wave

(with idle valve B)

Condition for Determination

Possible Reason

Actions

Engine idle operation

Water temperature reaches the normal

value

No TPS and VSS failure

Deviation from the target speed > 180

rpm

Failure duration > 15 s

1) Unreliable connection of the

connecting parts

2) Open circuit of any circuit of

idle valve

3) Error of corresponding relation

between

the

idle

valve

connecting parts and ECM

connecting parts

4) Intake manifold leakage

5) Idle control valve damaged

6) ECM failure

1) Connect again

2) Repair harness

3) Repair harness

4) Remove the leakage

failure

5) Replace idle control

valve

6) Replace ECM