Chery Tiggo T11 LHD. Manual — part 56
Chery T11 Service Manual Electric Injection System
37
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:
MT
20U
Heating-type
Oxygen Sensor
Normal
Measurement Signal
System main power supply:
\
C
12V
Heating drive:
61
D
0V
Oxygen sensor’s high signal:
62
B
0 to 1000mV
fluctuation
Oxygen sensor’s low signal:
06
A
0V
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
38
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:
\
C
12V
Heating drive:
61
D
0V
Oxygen sensor’s high signal:
62
B
0 to 1000mV
fluctuation
Oxygen sensor’s low signal:
06
A
0V
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:
MT
20U
Heating-type
Oxygen Sensor
Normal
Measurement Signal
System main power supply:
\
C
12V
Heating drive:
61
D
0V
Oxygen sensor’s high signal:
62
B
0 to 1000mV
fluctuation
Oxygen sensor’s low signal:
06
A
0V
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
39
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:
MT
20U
Heating-type
Oxygen Sensor
Normal
Measurement Signal
System main power supply:
\
C
12V
Heating drive:
61
D
0V
Oxygen sensor’s high signal:
62
B
0 to 1000mV
fluctuation
Oxygen sensor’s low signal:
06
A
0V
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:
MT
20U
Heating-type
Oxygen Sensor
Normal
Measurement Signal
System main power supply:
\
C
12V
Heating drive:
61
D
0V
Oxygen sensor’s high signal:
62
B
0 to 1000mV
fluctuation
Oxygen sensor’s low signal:
06
A
0V
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
40
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:
MT
20U
Fuel Nozzle
Normal
Measurement Signal
System main power supply:
\
A
12V
Fuel injector A (No 1 cylinder):
55
B
0 to 12V approx.
square
Fuel injector B (No 3 cylinder):
56
B
0 to 12V approx.
square
Fuel injector C (No 4 cylinder):
71
B
0 to 12V approx.
square
Fuel injector D (No 2 cylinder):
70
B
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
of
corresponding nozzle circuit
to the positive electrode of
power supply or to earth
2) Open
circuit
of
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
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