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●Check whether the throttle position sensor ② is damaged
Connect the diagnostic instrument to the whole vehicle, press the flameout switch (without ignition),
turn the throttle handle from the initial position to fully open, and check whether the throttle position
signal changes from 0 to 100.
3、INTAKE SYSTEM COMPONENT
Fig.3 INTAKE SYSTEM
COMPONENT
NO.
PART NO.
GB9074.13 Hexagon cross groove spring,flat cushion
1
1250106-112000
combination bolt M5×20
2
1050961-003000
External intake pressure sensor MAP01 (18590H7U300)
3
1050958-009000
ZT350 fixed bracket of external intake pressure sensor
4
1050970-002000 ZT1P72MN injector holder
5
1050954-023000 EV14 injector G48
6
1050958-008000 Air intake pressure sensor connection hose
7
1051454-016000 45 × 2.5 fluorine rubber O-ring
8
1050958-003000 ZT184MP intake manifold assembly
9
1251100-061093 M6×22 Hex flang bolt thread level 8.8 (color Zinc)
10
1051354-004000 Φ56×10 clamp components
11
1050958-001000 ZT44 Throttle Body Assembly (position sensor)
PROCEDURE:
●Throttle valve assembly
Pull out the stepper motor ① card and pull out the plug. Press the latch of the sensor ② and pull out the
plug. Press the card of the pressure sensor ③ and unplug it.
Loosen the clamp on the intake manifold end of the hose ⑺ and pull it out.
Use a 8# sleeve to remove the bolt ⑷, remove the external intake air pressure sensor assembly, the holder
⑸, and remove the fuel injector ⑹.
After loosening the clamp ⑽, separate the throttle valve body assembly ⑾ and the intake manifold
assembly ⑼, and remove the clamp ⑽.
Use an 8# Torx wrench to remove 2 bolts ⑷, and then take off the intake manifold ⑼ and O-ring ⑻.
Use a Phillips screwdriver to remove bolt⑴,then remove the sensor⑵ and the bracket⑶,take off the pipe⑺
from the sensor.
●Check whether the external intake pressure sensor is damaged
Loosen the connector and check whether the pin is skewed or broken. The vehicle is connected to the
diagnostic instrument without ignition. Check the engine parameters to see whether the pressure parameters
are consistent with the local atmospheric pressure.
●Check whether the fuel injector is damaged
Remove the manifold without loosening the plug of electrical parts. Press the ignition button to check
whether the two beams of oil mist emitted by the fuel injector are uniform.
●Check whether the stepping motor① is damaged
After turning off the power, take out the stepping motor, do not loosen the cable plug, press the flameout
switch at startup without ignition, check whether the motor plug can shrink back and forth, and finally turn off
the flameout switch to check whether the plug returns to its original position.
CHK
Intake system component
ADJ
PART NAME
QTY
1
1
1
2
1
1
1
1
2
1
1
21
CAUTION
φ3.5×φ7.5×L30
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