Geely EC718, EC718RV, EC715, EC715RV. Manual part — 43
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 43
Yes
Step 8
Diagnostic completed.
5. Repair Instructions:
Replace the post-catalytic oxygen sensor. Refer to
Post-Catalytic Oxygen Sensor Replacement
.
2.2.7.17 DTC P0105 P0106 P0107 P0108
1. DTC Descriptor:
DTC
P0105
Intake Air Pressure Sensor Signal No Change (Frozen)
DTC
P0106
Intake Air Pressure Sensor Unreasonable
DTC
P0107
Intake Air Pressure Sensor Circuit Short to Ground
DTC
P0108
Intake Air Pressure Sensor Circuit Short to Power Supply
Intake Air Pressure Sensor responds to the pressure changes within the intake manifold. Pressure varies according to engine load.
The sensor circuit consists of the following:
•
5V Reference Voltage Circuit
•
Low Reference Voltage Circuit
•
Sensor Signal Circuit
ECM provides EN16 5 V reference voltage through ECM harness connector EN01 terminal No.19 to the sensor harness connector
EN16 terminal No.3. At the same time ECM provides a low reference voltage through EN01 terminal No.40 to the sensor harness
connector EN16 terminal No.1. The sensor provides a signal through EN16 terminal No.4 to ECM harness connector EN01 terminal
No.59, and the signal is related to the intake manifold pressure change. When the intake manifold absolute pressure is low, ECM
detected signal voltage will be low, such as at idle or during deceleration. When the intake manifold absolute pressure is high, ECM
detected signal voltage will be high, such as when the ignition switch is turned on and the engine is turned off, or when the throttle
fully open. Sensors are also used to determine the atmospheric pressure such as When the ignition switch is turned on and the
engine is turned off. As long as the engine running with the throttle fully open, atmospheric pressure readings will also be updated.
ECM monitors sensor signals in order to determine whether the voltage is beyond the normal range.
2. Conditions For Setting DTC and The Fault Location:
DTC Code
DTC Detection Strategy
Conditions For Setting The DTC (Control
Strategy)
Fault Locations
P0105
Signal Inspection: The
pressure does not decrease
after starting.
1. The pressure drop is less than 2 kPa after
starting.
2. Engine speed is greater than 800 rpm.
1. Sensor Circuit
2. Sensor
3. ECM
P0106
Signal Unreasonable
Pressure Sensor Displayed Pressure.
P0107
Circuit Inspection, Over the
Maximum Limit
Pressure sensor voltage is less than 0.1 V.
Engine
Control System JL4G18-D
2-87
P0108
Circuit Inspection, Lower Than
the Maximum Limit
Pressure sensor voltage is greater than 4.9 V.
3. Schematic:
To Temperature Sensor
Engine
Control
Module
FE02-5016b
4. Diagnostic Steps:
Note
Before carrying out this diagnosis step, observe the data list on scan tool and analyze the accuracy of the data, as
these will help with quick diagnosis.
Step 1
Initial Inspection
Check the existence of the following conditions:
(a)
Sensor Housing Damage, Broken Vacuum Tubes.
(b)
Sensor Seal Damage.
(c)
Sensor Loose or Not Properly Installed.
(d)
Sensor Tube blockage.
Next
Note
It is not allowed to connect intake manifold absolute pressure sensor 5 V reference voltage circuit and other components
of the vehicle, as this will damage the sensors and ECM.
2-88
Control System JL4G18-D
Engine
Step 2
Measure intake manifold absolute pressure sensor 5 V reference voltage.
1
2
3
4
Intake Air Pressure Temperature
Sensor Harness Connector EN16
FE02-5017b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect intake manifold absolute pressure sensor wiring
harness connector EN16.
(c)
Turn the ignition switch to "ON" position.
(d)
Measure intake manifold absolute pressure sensor wiring
harness connector EN16 terminal No.3 to a reliable ground
voltage.
Standard Voltage: 4.5V-5.5V
(e)
Connect intake manifold absolute pressure sensor wiring
harness connector EN16.
Is voltage the specified value?
No
Yes
Step 3
Measure sensor signal circuit.
1
2
3
4
Intake Air Pressure Temperature
Sensor Harness Connector EN16
FE02-5018b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect intake manifold absolute pressure sensor wiring
harness connector EN16.
(c)
Turn the ignition switch to "ON" position.
(d)
Between EN16 terminal No.3 and No.4, connect a 5A fuse
wire. Use scan tool to read "the actual intake manifold
absolute pressure sensor voltage" parameter.
Standard Parameter: 4.5V-5.5V
(e)
Connect intake manifold absolute pressure sensor wiring
harness connector EN16.
Is data normal?
No
Yes
Step 4
Measure intake manifold absolute pressure sensor ground circuit.
Engine
Control System JL4G18-D
2-89
1
2
3
4
Intake Air Pressure Temperature
Sensor Harness Connector EN16
FE02-5019b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect intake manifold absolute pressure sensor wiring
harness connector EN16.
(c)
Turn the ignition switch to "ON" position.
(d)
Measure resistance between intake manifold absolute
pressure sensor wiring harness connector EN16 terminal No.
1 and a reliable ground.
Standard Value: Less than 3 Ω
(e)
Connect intake manifold absolute pressure sensor wiring
harness connector EN16.
Is resistance normal?
No
Yes
Step 5
Replace intake manifold absolute pressure sensor.
Next
Step 6
Check sensor 5 V reference voltage circuit.
1
3
5
7
8
6
4
2
9
10
11
12
13
23
24
25
26
27
28
29
30
37
51
52
53
54
55
56
57
58
59
60
61
62
63
64
38
39
40
41
42
43
44
45
46
47
48
49
50
31
32
33
34
35
36
14
15
16
17
18
19
20
21
22
ECM Harness Connector EN01
1
2
3
4
Intake Air Pressure Temperature
Sensor Harness Connector EN16
FE02-5020b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect intake manifold absolute pressure sensor wiring
harness connector EN16.
(c)
Disconnect ECM harness connector EN01.
(d)
Measure the resistance between intake manifold absolute
pressure sensor harness connector EN16 terminal No.3 and
ECM harness connector terminal No.19. Check whether the
circuit is open. If there is no open circuit, repair the faulty part.
(e)
Measure the resistance between intake manifold absolute
pressure sensor wiring harness connector EN16 terminal No.
3 and a reliable ground. Check whether there is a circuit short
to ground . If there is no short circuit, repair the faulty part.
(f)
Measure the voltage value between intake manifold absolute
pressure sensor wiring harness connector EN16 terminal No.
3 and a reliable ground. Check whether the circuit is short to
power supply. If there is no short circuit, repair the faulty part.
Test Items
Standard Value
Resistance Between EN16 (3) and EN01
(19)
Less than 1 Ω
Resistance Between EN16 (3) and A
Reliable Ground
10 kΩ or higher
Voltage Between EN16 (3) and A Reliable
Ground
0 V
Next
2-90
Control System JL4G18-D
Engine
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