JAC S2. Engine. Instruction — part 19
Engine mounting System
Engine Mounting system 261
fault code
P0108
high voltage of air inlet pressure sensor circuit
setting emergency control scheme
light up fault lamp until it is off; engine is stop: 100kPa; engine is
in idle: ≈ 32kPa
engine is running: manifold pressure changes with the opening of
throttle valve
connection terminal
MT22.1
pressure sensor
normal measurement
signal
5V reference voltage
66
3
5V
manifold pressure signal
54
4
0.5 ~ 4.5V
sensor signal ground
76
1
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
engine is running
without TPS fault
MAP>98.117kPa
TPS<19.141% the
fault lasted for
more than 2.5
seconds
1. pressure signal circuit got short circuit to
5V reference voltage or power positive pole
1 repair wiring harness
2. sensor damage
2. change the sensor
3. pressure signal inputing port fault on
ECM
3. change the ECM
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Engine mounting System
Engine Mounting system 262
Fault Code :P0112
fault code
P0112
low voltage of air inlet temperature sensor circuit
setting emergency control scheme
light up fault lamp until it is off; inlet air temperature is equal to
coolant temperature but lower than 44.25 degree
connection terminal
MT22.1
temperature sensor normal
measurement signal
inlet air temperature signal
71
2
0.5 ~ 4.5V
sensor signal ground
76
1
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
running time of
engine is longer than
120 seconds; MAT is
lower than -38.25
degree; fault lasted for
more than 2.5 seconds
1. poor connecting
1. connect it again
2. open circuit of temperature signal
ground circuit
2. repair wiring harness
3. open circuit of sensor signal ground
circuit
3. repair wiring harness
4. temperature signal circuit got short
circuit to power positive pole
4. repair wiring harness
5. sensor damage
5. change the sensor
6. signal inputing port fault on ECM
6. change the ECM
Fault Code :P0113
fault code
P0113
high voltage of air inlet temperature sensor circuit
setting emergency control scheme
light up fault lamp until it is off; inlet air temperature is equal to
coolant temperature but lower than 44.25 degree
connection terminal
MT22.1
temperature sensor normal
measurement signal
inlet air temperature signal
71
2
0.5 ~ 4.5V
sensor signal ground
76
1
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
running time of
engine is longer than
60 seconds; MAT is
1. temperature signal circuit got short
circuit to ground
1. repair wiring harness
2. sensor damage
2. change the sensor
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Engine mounting System
Engine Mounting system 263
higher than 148.5
degree; fault lasted
for more than 2
seconds
3. signal inputing port fault on ECM
3. change the ECM
Fault Code :P0117
fault code
P0117
low voltage of coolant temperature sensor circuit
setting emergency control scheme
light up fault lamp until it is off; use inlet air temperature when
starting, and fix the temperature when it increased to 79.5 degree
connection terminal
MT22.1
coolant temperature
sensor
normal
measurement signal
coolant temperature signal
49
A
0.5 ~ 4.5V
sensor signal ground
74
C
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
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Engine mounting System
Engine Mounting system 264
fault code
P0117
low voltage of coolant temperature sensor circuit
running time of
engine is longer than
10 seconds; MAT is
lower than -38.25
degree; fault lasted for
more than 2 seconds
1. poor connecting
1. connect it again
2. open circuit of temperature signal
ground circuit
2. repair wiring harness
3. open circuit of sensor signal ground
circuit
3. repair wiring harness
4. temperature signal circuit got short
circuit to power positive pole
4. repair wiring harness
5. sensor damage
5. change the sensor
6. signal inputing port fault on ECM
6. change the ECM
Fault Code :P0118
fault code
P0118
high voltage or open circuit of coolant temperature sensor circuit
setting emergency control scheme
light up fault lamp until it is off; use inlet air temperature when
starting, and fix the temperature when it increased to 79.5
degree
connection terminal
MT22.1
coolant temperature
sensor
normal
measurement signal
coolant temperature signal
49
A
0.5 ~ 4.5V
sensor signal ground
74
C
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
running time of
engine is longer
than 2 seconds; CTS
is higher than 135
degree; fault lasted
for more than 2
seconds
1. temperature signal circuit got short
circuit to ground
1. repair wiring harness
2. sensor damage
2. change the sensor
3. signal inputing port fault on ECM
3. change the ECM
Fault Code :P0122
fault code
P0122
low voltage of ETC throttle valve position sensor 1# circuit
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Engine mounting System
Engine Mounting system 265
setting emergency
control scheme
light up fault lamp until it is off;
set the opening of throttle valve position sensor to be 0% in idle speed; opening in
other rotating speeds will change with the corresponding speeds
suspend auto-zero of throttle valve position sensor
suspend clearing function
connection terminal
MT22.1
throttle valve
position sensor
normal measurement
signal
5V reference voltage
70
A
5V
throttle valve position
1 signal
52
D
0.5 ~ 4.5V
sensor signal ground
74
F
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
engine is running, but
the speed is slower
than 3000rpm; no
MAP fault and MAP is
lower than 70kpa; the
fault lasted for more
than 2 seconds
1. sensor signal circuit got short circuit to
power positive pole or reference voltage
1. repair wiring harness
2. sensor damage
2. change the sensor
3. signal inputing port fault on ECM
3. change the ECM
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Engine mounting System
Engine Mounting system 266
Fault Code:P0123
fault code
P0123
high voltage or open circuit of ETC throttle valve position sensor
1# circuit
setting emergency control scheme
light up fault lamp until it is off;
set the opening of throttle valve position sensor to be 0% in idle
speed; opening in other rotating speeds will change with the
corresponding speeds
suspend auto-zero of throttle valve position sensor
suspend clearing function
connection terminal
MT22.1
throttle valve
position sensor
normal measurement
signal
5V reference voltage
70
A
5V
throttle valve position 1 signal
52
D
0.5 ~ 4.5V
sensor signal ground
74
F
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
the fault lasted for
more than 2 seconds
1. poor connecting
1. connect it again
2. open circuit of sensor signal ground
circuit
2. repair wiring harness
3. sensor signal circuit got short circuit to
ground
3. repair wiring harness
4. sensor damage
4. change the sensor
5. signal inputing port fault on ECM
5. change the ECM
Fault Code :P0131
fault code
P0131
front oxygen sensor is short-circuit to low voltage
setting emergency control scheme
light up fault lamp until it is off and turn off the ignition switch
closed-loop working time of system postponed
connection terminal
MT22.1
heating oxygen
sensor
normal
measurement signal
main power of system
\
D
12V
heat driving
24
C
0V
oxygen sensor high signal
47
B
0 ~ 1000mV
fluctuation
oxygen sensor low signal
73
A
0V
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Engine mounting System
Engine Mounting system 267
judging criteria
possible fault reason
referenced trouble shooting scheme
the fault lasted for
more than 1 seconds
1. heat driving circuit got short circuit to
power positive pole
1. repair wiring harness
2. sensor damage
2. change the sensor
3. signal outputing port fault on ECM
3. change the ECM
Fault Code :P0132
fault code
P0132
front oxygen sensor is short-circuit tohigh voltage
setting emergency control scheme
light up fault lamp until it is off and turn off the ignition switch
closed-loop working time of system postponed
connection terminal
MT22.1
heating oxygen
sensor
normal
measurement signal
main power of system
\
D
12V
heat driving
24
C
0V
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Engine mounting System
Engine Mounting system 268
fault code
P0132
front oxygen sensor is short-circuit tohigh voltage
oxygen sensor high signal
47
B
0 ~ 1000mV
fluctuation
oxygen sensor low signal
73
A
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
fault of
without main
relay lasted for
more than 1
seconds
1. poor connecting
1. connect it again
2. open circuit of heat driving circuit
2. repair wiring harness
3. heat driving circuit got short circuit to
ground
3. repair wiring harness
4. sensor damage
4. change the sensor
5. signal outputing port fault on ECM
5. change the ECM
Fault Code :P0133
fault code
P0133
too-slow response of front oxygen sensor
setting emergency control scheme
light up fault lamp until it is off and turn off the ignition switch
closed-loop working time of system postponed
connection terminal
MT22.1
heating oxygen
sensor
normal
measurement signal
main power of system
\
D
12V
heat driving
24
C
0V
oxygen sensor high signal
47
B
0 ~ 1000mV
fluctuation
oxygen sensor low signal
73
A
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
fault of without
main relay
lasted for more
than 1 seconds
1. poor connecting
1. connect it again
2. open circuit of heat driving circuit
2. repair wiring harness
3. heat driving circuit got short circuit to
ground
3. repair wiring harness
4. sensor damage
4. change the sensor
5. signal outputing port fault on ECM
5. change the ECM
Fault Code :P0137
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Engine mounting System
Engine Mounting system 269
fault code
P0137
rear oxygen sensor is short-circuit to low voltage
setting emergency control scheme
light up fault lamp until it is off and turn off the ignition switch
closed-loop working time of system postponed
connection terminal
MT22.1
heating oxygen
sensor
normal
measurement signal
main power of system
\
D
12V
heat driving
23
C
0V
oxygen sensor high signal
48
B
0 ~ 1000mV
fluctuation
oxygen sensor low signal
73
A
0V
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Engine mounting System
Engine Mounting system 270
fault code
P0137
rear oxygen sensor is short-circuit to low
voltage
judging criteria
possible fault reason
referenced trouble shooting scheme
fault lasted for more
than 1 seconds
1. heat driving circuit got short circuit to
power positive pole
2. sensor damage
3. signal outputing port fault on ECM
1. repair wiring harness
2. change the sensor
3. change the ECM
Fault Code :P0138
fault code
P0138
rear oxygen sensor is short-circuit to high voltage
setting emergency control scheme
light up fault lamp until it is off and turn off the ignition switch
closed-loop working time of system postponed
connection terminal
MT22.1
heating oxygen
sensor
normal
measurement signal
main power of system
\
D
12V
heat driving
23
C
0V
oxygen sensor high signal
48
B
0 ~ 1000mV
fluctuation
oxygen sensor low signal
73
A
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
fault of without main
relay lasted for more
than 1 seconds
1. poor connecting
1. connect it again
2. open circuit of heat driving circuit
2. repair wiring harness
3. heat driving circuit got short circuit to
ground
3. repair wiring harness
4. sensor damage
4. change the sensor
5. signal outputing port fault on ECM
5. change the ECM
Fault Code :P0222
fault code
P0222
low voltage of ETC throttle valve position sensor 2# circuit
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Engine mounting System
Engine Mounting system 271
setting emergency control scheme
light up fault lamp until it is off;
set the opening of throttle valve position sensor to be 0% in idle
speed; opening in other rotating speeds will change with the
corresponding speeds
suspend auto-zero of throttle valve position sensor
清淹功能暂停 suspend clearing function
connection terminal
MT22.1
throttle valve
position sensor
normal measurement
signal
5V reference voltage
70
A
5V
throttle valve position 2 signal
27
E
0.5 ~ 4.5V
sensor signal ground
74
F
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
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Engine mounting System
Engine Mounting system 272
fault code
P0222
low voltage of ETC throttle valve position sensor 2# circuit
engine is running, but
the speed is slower
than 3000rpm; no
MAP fault and MAP is
lower than 70kpa; the
fault lasted for more
than 2 seconds
1. sensor signal circuit got short circuit to
power positive pole or reference voltage
1. repair wiring harness
2. sensor damage
2. change the sensor
3. signal inputing port fault on ECM
3. change the ECM
Fault Code :P0223
fault code
P0223
high voltage or open circuit of ETC throttle valve position sensor
2# circuit
setting emergency control scheme
light up fault lamp until it is off;
set the opening of throttle valve position sensor to be 0% in idle
speed; opening in other rotating speeds will change with the
corresponding speeds
suspend auto-zero of throttle valve position sensor
清淹功能暂停 suspend clearing function
connection terminal
MT22.1
throttle valve
position sensor
normal measurement
signal
5V reference voltage
70
A
5V
throttle valve position 2 signal
27
E
0.5 ~ 4.5V
sensor signal ground
74
F
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
the fault lasted for
more than 2
seconds
1. poor connecting
1. connect it again
2. open circuit of sensor signal ground
circuit
2. repair wiring harness
3. sensor signal circuit got short circuit to
ground
3. repair wiring harness
4. sensor damage
4. change the sensor
5. signal inputing port fault on ECM
5. change the ECM
Fault Code :P0230
fault code
P0230
fault of fuel pump relay
setting emergency control scheme
light up fault lamp until it is off
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Engine mounting System
Engine Mounting system 273
connection terminal
MT22.1
fuel pump relay
normal measurement
signal
main power of system
\
refer to instruction of
electric system
12V
sensor signal ground
10
refer to instruction of
electric system
0V (Work),12V (Stop)
judging criteria
possible fault reason
referenced trouble shooting scheme
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Engine mounting System
Engine Mounting system 274
fault code
P0230
fault of fuel pump relay
the fault lasted for
more than 1.5625
seconds
1. poor connecting
1. connect it again
2. the circuit connected to main system
power is open
2. repair wiring harness
3. relay drive circuit got short to system
power negative pole
3. repair wiring harness
4. relay drive circuit is open
4. repair wiring harness
5. relay damage
5.change the relay
6. signal outputing port fault on ECM
6. change the ECM
Fault Code :P0325
fault code
P0325
fault of knock sensor
setting emergency control scheme
light up fault lamp until it is off
use safety ignition angle of advance
connection terminal
MT22.1
knock sensor
normal measurement
signal
knock high signal
36
0-1V
knock low signal
37
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
engine speed is
slower than
2000rpm; MAP is
lower than 50kpa;
the fault lasted for
more than 5 seconds
1. poor connecting
1. connect it again
2. knock signal circuit is open
2. repair wiring harness
3. sensor signal ground is short-circuit
3. repair wiring harness
4. sensor signal circuit is short to other
circuits
4. repair wiring harness
5. sensor damage
5. change the sensor
6. signal outputing port fault on ECM
6. change the ECM
Fault Code :P0336
fault code
P0336
signal interference of crankshaft position sensor circuit
setting emergency control scheme
light up fault lamp until it is off
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Engine mounting System
Engine Mounting system 275
connection terminal
MT22.1
crankshaft position
sensor
normal measurement
signal
sensor signal
30
A
sine wave (with
sensor B)
pressure signal
66
C
sine wave (with
sensor A)
system ground wire
76
B
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
engine is running;
after 5 consecutive
loop, the number of
tooth to get into
ECM is not equal to
58
1. poor shielding of signal circuit
1. use shield wire
2. 58x tooth ring has metal foreign matter 2. clean 58x tooth ring
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Engine mounting System
Engine Mounting system 276
Fault Code :P0337
fault code
P0337
no signal of crankshaft position sensor circuit
setting emergency control scheme
light up fault lamp until it is off
engine cannot start
connection terminal
MT22.1
crankshaft position
sensor
normal measurement
signal
sensor signal
30
A
sine wave (with
sensor B)
pressure signal
66
C
sine wave (with
sensor A)
system ground wire
76
B
0V
judging criteria
possible fault reason
referenced trouble shooting scheme
start the engine; no
engine speed; MAP
decreased; 2.9509kpa;
system voltage
decreased 0.8V;
vehicle speed is
slower than 4lm/h;
fault lasted for more
than 2 seconds
1. poor connecting
1. connect it again
2. reverse connection of high and low signal 2. repair wiring harness
3. signal circuit is open
3. repair wiring harness
4. signal circuit is short to other circuits
4. repair wiring harness
5. sensor damage
5. change the sensor
6. signal inputing port fault on ECM
6. change the ECM
Fault Code :P0341
fault code
P0341
fault of camshaft position sensor rationality
setting emergency control scheme
light up fault lamp until it is off
thers is 50% that probability that fuel injection sequence has 360
degree malposition
connection terminal
MT22.1
camshaft position
sensor
normal measurement
signal
5V reference voltage
70
C
5V
camshaft signal
77
A
0-5V 方波 square
wave
sensor signal ground
74
B
0V
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