Geely Emgrand X7. Manual part — 224
Geely Emgrand X7. Manual part - 224
6
Inspect ECM Power Supply Circuit and Ground Circuit.
Inspect ECM Power Supply Circuit and Ground Circuit, and refer to 2.12.7.43 DTC P0562 P0563.
ECM power and ground circuits normal?
7
Refer to 2.12.8.1 Replacement of Engine Control Module to replace ECM.
8
Refer to 2.12.7.11“Crankshaft Position Sensor (CKP) Learn to carry out the
crankshaft position sensor learn.
9
Use fault diagnosis tester to confirm if DTC is stored again .
A. Connect fault diagnosis tester to the data link connector.
B. Rotated ignition switch to ON position
C. Clear DTC code.
D. Start and run the engine at idle speed to warm up the engine for at least 5 min.
E. Road test the vehicle for at least 10min.
F. Read control system DTC code again to confirm that the system has no DTC code output.
10 Troubleshooting
5. Maintenanceguide
Acceleration pedal position sensor can only be replaced as an assembly. Do not disassemble.
Refer to 2.12.8.4“Replacement of Acceleration Pedal” to replace the acceleration pedal sensor.
No
Refer to 2.12.7.3 Intermittent Fault
Inspection for intermittent fault.
Yes
Next
Next
No
Power and ground circuits fault.
Yes
No
Circuit fault, repair the faulty part.
Yes
895
2.12.7.52 DTC P2127 P2128
1. DTC
description:
DTC P2127
Electronic Acceleration Pedal Position Sensor #2 Circuit Low Voltage or Open
DTC P2128
Electronic Acceleration Pedal Position Sensor #2 Circuit High Voltage
In order to protect the security of the system, acceleration pedal position sensor (APP) uses a
dual-sensor setting, sliding resistive. APP sensor 2 output is IP51 terminal No.6, through ECM
wiring harness Connect EN01 terminal No.42 to ECM.
2. Conditions For Setting DTC and The Fault Location:
DTC Code
DTC Detection
Strategy
Set(Control Strategy) Conditions Fault
Locations
P2127
Hardware Circuit
Malfunction
1. APS2 signal terminal grounded
or open.
2. Input signal less than 2.5%
P2128
Hardware Circuit
Malfunction
Voltage is higher than the maximum
limit, or short to power supply
1. Acceleration
Pedal Position
Sensor
2. Acceleration
Pedal Position
Sensor Circuit
3. ECM
3. Circuit
figure
Refer to 2.12.7.51 DTC P2122 P2123.
4. Diagnostic
Steps:
1
Inspect APP sensor harness connector IP51 terminal voltage of the No.1.
A. Turn the ignition switch to the
OFF position.
B. Disconnect APP sensor harness
connector IP51.
C. Turn the ignition switch to the
ON position.
D. Measure voltage between IP51
terminal No.1 and a reliable
ground.
Standard Voltage: 4.8-5.2V
Does it conform to the standard value?
电子油门线束连接器
IP51
6
5
4
3
2
1
NL02-0030c
Electronic accelerator harness
connectorIP51
896
2
Inspect resistance between APP sensor harness connector IP51 terminal
No.5 and a reliable ground.
A. Turn the ignition switch to the OFF position.
B. Disconnect APP sensor harness connector IP51.
C. Turn the ignition switch to the ON position.
D. Measure resistance between IP51 terminal No.5 and a reliable ground.
Standard Resistance: Less than 3 Ω
Does it conform to the standard value?
3
Inspect APP sensor harness connector IP51 terminal No.6.
A. Turn the ignition switch to the
OFF position.
B. Disconnect APP sensor harness
connector IP51.
C.
Disconnect ECM harness
connector EN01.
D. Measure resistance between IP51
terminal No.6 and a reliable
ground.
E. Measure voltage between IP51
terminal No.4 and a reliable
ground.
F. Test continuity between IP51
terminal No.6 and EN01 terminal
No.42.
NL02-2155b
6
5
4
3
2
1
IP51 电子油门踏板线束连接器
6
No
Go to step 5
Yes
No
If the voltage is higher than the Standard Value, the
circuit is short to power supply; if the voltage is
lower than the standard value, go to step 5.
Yes
IP51 electronic accelerator
pedalharness connector
897
NL02-2156b
EN01 发动机控制模块线束连接器
1
2
4
5
3
81
63
44
25
6
62
43
24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
26
42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27
45
46
61 60 59 58
57 56 55
54 53 52 51 50 49 48 47
64
65
66
80 79 78 77 76 75 74 73 72 71 70 69 68 67
42
Results
Test Items
Standard Value
Resistance Between IP51(6) and A Reliable
Ground
Lager than 10 kΩ
Voltage Between IP51(6)and A Reliable
Ground
Less than 1 Ω
Continuity Between IP51(6)and EM01(42)
0 V
Inspect whether according with the standard value?
4
Inspect APP sensor harness connector IP51 terminal No.6 output voltage.
Inspect APP sensor harness connector
IP51 terminal No.6 output voltage.
NL02-2155b
6
5
4
3
2
1
IP51 电子油门踏板线束连接器
6
No
Circuit fault, repair the faulty part.
Yes
EN01 engine control module harness
connector
IP51 electronic accelerator
pedalharness connector
898
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