Geely EC718 2009 Workshop Manual page 169

Engine
Yes
Diagnostic completed.
Step 8
5. Repair Instructions:
Replace the post-catalytic oxygen sensor. Refer to
2.2.7.17 DTC P0105 P0106 P0107 P0108
1. DTC Descriptor:
DTC P0105
DTC P0106
DTC P0107
DTC P0108
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
Signal Inspection: The
P0105 pressure does not decrease
after starting.
P0106 Signal Unreasonable
Circuit Inspection, Over the
P0107
Maximum Limit
2.4.7.1 Post-Catalytic Oxygen Sensor
Intake Air Pressure Sensor Signal No Change (Frozen)
Intake Air Pressure Sensor Unreasonable
Intake Air Pressure Sensor Circuit Short to Ground
Intake Air Pressure Sensor Circuit Short to Power Supply
Conditions For Setting The DTC (Control
1. The pressure drop is less than 2 kPa after
starting.
2. Engine speed is greater than 800 rpm.
Pressure Sensor Displayed Pressure.
Pressure sensor voltage is less than 0.1 V.
Control System JL4G18-D
Replacement.
Strategy)
EC718/EC718RV EC715/EC715RV 10/2009
Fault Locations
1. Sensor Circuit
2. Sensor
3. ECM
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