Page 246 - Foton Workshop Manual - Aumark (BJ1099)

11-20 ENGINE CONTROL SYSTEM - INTAKE PRESSURE/TEMPERATURE SENSOR

(f). Check intake air temperature sensor
section.
•Turn digital multimeter to ohms range,
connect two probes to No.1 and No.3 pin
4 3 2 1
of sensor, respectively.
Rated resistance(at 20℃ ): 2.5kΩ±5%
•Simulate the air supply to sensor by
electric hair drier (Note: Don't get too
close), observe the change of sensor
Ω resistance, the resistance value shall
decline at this time.
NOTICE:
fuwx11006 Upon checkup, the sensor connector shall be
disconnected, and the resistance at sensor side
shall be detected by multimeter.

(g). Check pressure sensor section
Turn digital multimeter to DCV, connect
black probe to ground, and connect red
4 3 2 1
probe to No.2 and No.4 pin.

Test
conditions Terminal Voltage
V
2-Grounding 5V
Idle
4-Grounding 1.3V

Open the
throttle 4-Grounding Basically no change
No slowly
fuwx11007
load Open the
throttle 4-Grounding Instantly reach4V,
thendecline to1.5V
quickly

NOTICE:
If the checkup does not conform to provision, replace the intake air pressure temperature
sensor.

Page 246