Geely EC718 2009 Workshop Manual page 734

2-652 Control System JL4G15-D
• Low Reference Voltage Circuit
• Sensor Signal Circuit
ECM provides 5 V reference voltage through ECM harness connector EO01 terminal No.6 to the sensor harness connector EO16
terminal No.3 and a low reference voltage through EO01 terminal No.19 to EO16 terminal No.1. The sensor provides a signal through
EO16 terminal No.4 to ECM harness connector EO01 terminal No.27. This signal is related to the intake manifold pressure change.
When the intake manifold absolute pressure is low, such as at idle or during deceleration, ECM detected signal voltage is low. When
the intake manifold absolute pressure is high, such as the ignition switch turned on with the engine is turned off, or when the throttle
is fully open, ECM detected signal voltage is high. Sensors are also used to determine the atmospheric pressure. Running the engine
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
Circuit Inspection, Lower Than
P0107
The Minimum
Circuit Inspections, Exceeding
P0108
The Maximum
EC718/EC718RV EC715/EC715RV 10/2009
Conditions For Setting The DTC (Control
Strategy)
1. Idle
2. When the sensor circuit short or
ground, the sensor signal voltage is
0
1. Idle
2. When the sensor circuit short to
power supply or a 5 V reference
voltage
3. Sensor A / D initial signal is 99.6%
Fault Locations
1. Sensor Circuit
2. Sensor
3. ECM
Engine