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c. Use a short Phillips screwdriver to remove the 2
GB9074.4 M4×16 bolts③ that comes with the throttle valve
body assembly, and then remove the the anti-off card④,
and then take off the stepper motor.It is forbidden to soak
the sensor with any liquid.
Simple test method: connect the whole vehicle to the
diagnostic instrument, press the flameout switch (no need to
ignite), turn the throttle handlebar from the initial position to
full open, this process to see if the throttle position signal
follows the change from 0 to 100.
Position sensor output voltage value idle position:
0.7±0.1V; Full open position: 3.6-3.9V, input voltage
DC5V±0.1V. f. Check the external inlet pressure sensor:
Release the connector and see if the pins are skewed or
broken.
d. The vehicle is connected to a diagnostic instrument
without ignition, and the engine parameters are checked to
see if the pressure parameters are consistent with the local
atmospheric pressure.
If you need to remove the intake pressure sensor, grasp
the bushing (2) firmly and remove the bolt (1) with the 8#
short sleeve. If it is inconvenient to operate, the battery and
electrical device box can be removed before proceeding.
Clamp the clamp on the bottom with pliers and move it up to
the top and remove the inlet pressure sensor from the hose
(3) and the sensor. Remove the hose from the sensor.
5. Throttle valve body troubleshooting process
Throttle valve body
troubleshooting process
Idle adjustment bolt
looseness,poition
spring stagnation and
other problems
According to idle
speed,determine idle speed
adjustment bolt position and
fix; replace recoil spring or
cleaning throttle valve body
disc
Throttle body sensor
performance check
Fault lights are always
on druing riding
Check the corresponding sensor
according to the fault code,if the
circit is normal,the sensor can be
judged to be faulty and need to be
replaced.
The diagnostic
instrument eads the data
stream and requires the
engineer to judge
whether the sensor is
working properly
●The vehicle must be parked on a flat and stable ground or a
lifting platform.
●Once the engine and muffler have cooled down, the
operation can be performed.
●When removing the high-pressure fuel pipe, prevent the
fuel from dripping onto the surface of the part.
●Smoking, making calls, etc. are prohibited in the workplace.
●Remove the throttle valve body to clean the carbon
deposits and operate in a dust-free and dust-free
environment to prevent dust from entering the inside of the
engine.
●Prevent foreign matter from falling into the engine or air
filter.
●If the stepper motor,sensor and heat insulation pad are
disassembled, do not miss the sealing ring and make sure
that the sealing ring is assembled in place without cutting
edges.
●Do not use carburetor cleaner or compressed air to clean
the throttle valve body.
●The EFI system needs to be reset after reinstalling the
battery.The specific method is as follows:
a. Unlock the vehicle and support the main bracket;
b. Pinch the brake and start the vehicle;
c. Pull the engine speed above 3000 rpm;
d. After releasing the throttle, turn off the flameout switch
and lock the car;
e. After waiting for 5 seconds, unlock the vehicle again to
complete the reset of the EFI system.
Summary of Contents for ZT350T-D
Page 1: ...1 152 ZT350T D Maintenance Manual 2022 11 24...
Page 50: ...50 152 D350 Braking system component diagram...
Page 88: ...88 152 Electrical schematic diagram of EFI system...
Page 124: ...124 152 Exploded view of front fork components Directional exploded view...
Page 125: ...125 152 Front fork exploded view...
