Chery Tiggo T11 LHD. Manual — part 62

Chery T11 Service Manual Electric Injection System

61

Failure Code:

P1530-1

Short circuit of A/C compressor relay circuit to the positive

electrode of power supply

Set emergency control scheme:

 Switch on the failure lamp till the failure disappears
 The air conditioner is out of service

Connection terminal:

MT 20U

Main Power Supply Relay

Normal Measurement

Signal

Battery:

\

Refer to Electrical System

Description

12 V

Relay drive:

58

Refer to Electrical System

Description

12 V (operating) and 0

V (stop)

Condition for Determination

Possible Reason

Actions

Detect and find the A/C system

Failure Duration > 3 s

1) Short circuit of repair harness circuit

to the positive electrode of power

supply

2) Relay damaged

3) ECM failure

1) Repair harness

2) Replace relay

3) Replace ECM

Power

Supply

A/C Request Signal

A/C Compressor Clutch

Chery T11 Service Manual Electric Injection System

62

Failure Code:

P1530-2

Short circuit of A/C compressor relay circuit to the positive

electrode of power supply

Set emergency control scheme:

 Switch on the failure lamp till the failure disappears
 The air conditioner is out of service (open circuit)
 Air conditioner operates normally (short circuit to earth)

Connection terminal:

MT

20U

Main Power Supply Relay

Normal

Measurement Signal

Battery:

\

Refer to Electrical System

Description

12 V

Relay drive:

46

Refer to Electrical System

Description

12 V (operating) and

0 V (stop)

Condition for Determination

Possible Reason

Actions

Detect and find the A/C system

Failure Duration > 3 s

1) Unreliable

connection

of

the

connecting parts

2) Open circuit to the battery connecting

wire

3) Short circuit of the repair harness

circuit to the negative electrode of

power supply

4) Open circuit of the repair harness

circuit

5) Relay damaged

6) ECM damaged

1) Connect again

2) Repair harness

3) Repair harness

4) Repair harness

5) Replace relay

6) Replace ECM

Failure Code: P1604-0

Knock control system failure

Set emergency control scheme:  Switch on the failure lamp

 The vehicle model is with the anti-theft measures, and the

engine is difficult to start up

 The mileage accumulation function loses

Connection terminal:

69#

MT 20U

ECM

Normal Measurement

Signal

ECM:

ECM internal failure

\

Condition for Determination

Possible Reason

Actions

A failure exists

1) ECM failure

1) Replace ECM

Chery T11 Service Manual Electric Injection System

63

Failure Code: P2000-1

Over-high temperature of front A/C evaporator

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

 NULL

Connection terminal:

MT

20U

Front Evaporator Temperature

Sensor

Normal

Measurement Signal

Temperature signal:

26

Refer to Electrical System

Description

0.5 to 4.5 V

Sensor signal earth:

05

Refer to Electrical System

Description

0 V

Condition for Determination

Possible Reason

Actions

Temperature indicated > 144℃

Failure Duration > 3 s

1) Short circuit of temperature signal wire

to the negative electrode of power

supply

2) Sensor damaged

3) ECM failure

1) Repair harness

2) Replace sensor

3) Replace ECM

Failure Code:

P2000-2

Too-low temperature of front A/C evaporator

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

 NULL

Connection terminal:

MT

20U

Front Evaporator Temperature

Sensor

Normal

Measurement Signal

Temperature signal:

26

Refer to Electrical System

Description

0.5 to 4.5 V

Sensor signal earth:

05

Refer to Electrical System

Description

0 V

Condition for Determination

Possible Reason

Actions

Temperature indicated <

-36℃

Failure Duration > 3 s

1) Unreliable

connection

of

the

connecting parts

2) Short circuit of temperature signal wire

to the positive electrode of power

supply

3) Open circuit of temperature signal wire

4) Relay damaged

5) ECM damaged

1) Connect again

2) Repair harness

3) Repair harness

4) Replace relay

5) Replace ECM

Chery T11 Service Manual Electric Injection System

64

4. Typical Malfunction

1) Engine doesn’t operate or operates slowly when startup

Starter’s own problems (such as seized, internal short circuit), over-great engine resistance

force, and circuit system (voltage, earth).

No.

Operation Step

Detection

Result

Subsequent Step

1

Apply a multimeter to detect whether there is

approximate 10 to 12.5 V between both

connecting terminals of battery.

Yes

Next step

No

Repair or replace

battery

2

Place the ignition switch on the “ON” position,

and apply a multimeter to detect whether there is

approximate 10 to 12.5 V voltage between the

connecting terminals which connect to the positive

electrode of battery.

Yes

Next step

No

Repair

connecting

terminal or replace

conducting wire

3

Keep the ignition switch on the start gear, and

apply a multimeter to detect whether there is

above 8V voltage between the connecting

terminals on the ignition switch which connect to

the pull-in winding of starter motor.

Yes

Next step

No

Repair or replace the

ignition switch

4

Apply a multimeter to detect whether the circuit of

starter motor is short or open circuit.

Yes

Repair or replace the

starter motor

No

Next step

5

Examine and confirm whether the engine is seized

firmly due to the bad lubrication.

Yes

Remove the failure

No

Next step

6

If in winter, examine and confirm whether the

resistance force of starter motor is over great due

to improper selection of engine lubricating oil and

gearbox oil (if with high viscosity, the engine

resistance force is great).

Yes

Change

with

appropriate oil

No

Examine the other

parts