Geely EC718 2009 Workshop Manual page 176

2-94 Control System JL4G18-D
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.
Step 2 Measure intake air temperature sensor resistance.
Intake Air Temperature/Pressure Sensor
Yes
Step 3 Measure intake air temperature sensor signal.
Intake Air Pressure Temperature
Harness Connector EN16
1 2
Yes
Measure intake air temperature sensor to ground circuit.
Step 4
EC718/EC718RV EC715/EC715RV 10/2009
FE02-5024b
3 4
FE02-5025b
(c) Sensor Wiring Harness Connector Loose
(a) Turn the ignition switch to "OFF" position.
(b) Disconnect intake air pressure and temperature sensor
wiring harness connector EN16.
(c) Measure intake air temperature sensor resistance.
Standard Resistance (Refer to the specific
parameters2.2.1.2 Temperature Sensor Temperature and
Resistance Correlation): 20°C (68 ºF) 2,400 Ω
(d) Connect intake air pressure and temperature sensor wiring
harness connector EN16.
Is resistance the specified value?
Replace intake air pressure and temperature
No
sensor. Go to step 9
(a) Turn the ignition switch to "OFF" position.
(b) Disconnect intake air pressure and temperature sensor
wiring harness connector EN16.
(c) Turn the ignition switch to "ON" position.
(d) Measure voltage between intake air pressure and
temperature sensor wiring harness connector EN16 terminal
No.2 and a reliable ground.
Standard Voltage: 4.7-5.5 V
(e) Connect intake air pressure and temperature sensors
connector EN16.
Is voltage normal?
Go to step 5
No
Engine