2006 GREAT WALL HOVER sensor

Instroduction-6
9. Determine the necessity of using special maintenance tools and
special maintenance material according to the practical situation
of maintenance. Use them on the necessary position, and go on
with the maintenance according to proper procedures.
10. To replace the fuse, check to see whether the rated current of
new fuse is correct. Do not exceed the rated current of the fuse,
or do not use the fuse with low rated current.
11. When jacking up or supporting the car, lift or support the car on
proper position with care.
a. If only jacking up the car in the front part or rear part, choke up the
wheel to ensure the safety.
b. After the car is jacked up, use frame to support it. It is dangerous to
conduct maintenance on the car that is only jacked up with one
screw jack, even for the minor maintenance that can be finished
quickly.
12. Paying attention to the following matters to avoid the damage
of components:
a. If it is not absolutely necessary, do not open the housing of the
ECU and the computers (if the IC terminals are touched, the IC
may have electrostatic damage).
b. When removing the vacuum tube, pull the end of the tube instead of
the central part of the tube.
c. When pulling the wire terminal, pull the terminal itself instead of
the wire.
d. Take care to not make the electrical components fallen, such as the
sensor or relay.
If they fall to the hard ground, they must be replaced.
e. Never use the striking wrench to remove or install the electric
thermostat or thermostat sensor.
f. When checking the conducting state of the wire connector, insert
the multimeter with care, do not bend the terminal.
g. When using the vacuum meter, do not insert the soft tube onto large
connector. Use the stepped terminal. Once the soft tube is swelled
and tightened, there may be leakage.
error correct

Air-conditioning system
The structure and parameter of the air-conditioning s ystem is shown in table 8.
Table 8 The structure and parameter of the air-conditioning system

Serial No. Item Structure and Paramet er
1 Structure and
shape

Front and rear heating and cooling air conditioner, vapor compression type
cooling, hot-wat er heating

2 Performance and
parameters

Refrigerating capacity 3.5kW, heat exchange capacity 3.5kW, fan capacity
350m
3/h
3 Operation
Control board button type operation, temperature auto control, air door micro
motor drive, the temperature in the car can be controlled automatically, the
fanning position mode, heating/ cooling mode, air int ern/external cycling mode
and wind speed and t emperature can b e selected and adjusted

4 Refrigerant R134a
5 Compressor SD7V16 variable capacity compressor, with a maximum capacity of 160ml
6 Condenser Parallel stream mode structure, flat pipe thickness of 26mm
7 Evaporator Two box es structure, cascading evaporator, F expansion valve, centrifugal
blower

8 Drying fluid
collector
External diameter φ60.5mm
9
Refrigerating
pipe and
wa r m wa t er pi p e

Refrigerating pipe: complex structure of rubber refrigeration soft tube and
aluminum tube. The warm water pipe: rubber molding pipe

10 Transducer Outdoor temp erature sensor, indoor t emperature sensor, evaporator temperature
sensor
11 pressure switch Three-state pressure switch

Automatic transmission-4
10. The gross weight of the transmission is 76kg; mostly weight is on the front of the transmission (side of torque converter). This
should be considered when design the handling/assembly tools.
11. The crankshaft speed/position sensor is installed on the top of transmission torque converter housing which must be installed
after the transmission is installed on the engine. The sensor will be damaged if it is installed before the installation of
transmission.
12. The transmission use the breathing tube connected to rear end of transmission. The tube must not be restricted or blocked
otherwise the air pressure in transmission will be increased. It is unallowable that the water/dirty/dust enters into the
breathing tube; otherwise the transmission will be damaged.
Removal of transmission
If the transmission needs removing for any reasons, following is the preventive measure to help the remove.
1. Must not only support the oil pan in middle of transmission for it will be deformed and leaked. The oil pan will not be deformed
when supports its external edge.
2. It must not allow the transmission to connect to the engine when the rear end is without connection, otherwise the exhaust
system of vehicle will be damaged.
3. Remove all torque converter bolts and push back the torque converter before remove the bolt connected the torque converter
housing to engine. Once all bolts connected the torque converter housing to engine are removed, use the torque converter the
push the transmission from the location pin, then ensure the torque converter is on the transmission and the transmission is
separated form location pin.
4. Install the dustproof cover on the cooler connector rapidly after open the oil cooler pipe; otherwise the oil leakage from the
torque converter will be 2L. The odometer dustproof cover can prevent the dirty from entering into the transmission and avoids
the leakage of oil form transmission.
5. The engine speed sensor is installed on the top of transmission and should be removed before the transmission is removed form
the engine, for the sensor will be damaged during the removal process of the transmission.
Figure 2.1 Gear selection interface
mode selection
gear selection
indicationgear slide way
Operation and display interface
The four-speed automatic transmission has three types of operation display interface which are shown as follows:
Gear selection
The transmission uses the traditional gear selection shifting handle, which is shown in figure. The gear rod can be moved on the gear
slide way according to the requirement. The relationship between the related gear and its function.

Automatic transmission-5
Table 2.1 Gear selection and its function
Gear selection function
1st-Gear
(manual 1
st-Gear ) The first gear is using for climbing and braking. It is a function which limits the speed of
the car. The speed limitation by engine is realized by reduce the opening degree of
throttle position.
2nd-Gear (automatic, manual
2
nd-Gear) In economic mode, it can process the 1
st and 2nd shifting operation when engage the 2nd
–Gear. The limitation of vehicle speed by engine is realized through reducing the
opening of throttle position. in 4WD 4 high, , the transmission will maintain 2
nd-Gear
position The manual mode and winter-Mode will only maintain 2nd-Gear 。
3rd-Gear
(automatic, manual 3rd-Gea) In economic mode and dynamic mode, it can process the shifting operation of 1
st, 2nd
and 3rd-Gear when engage the 3rd-Gear, and can reaches the very high vehicle speed. At
this time the locking clutch can process the locking action, refer to vehicle user manual.
The limitation of vehicle speed by engine is realized by reduce the opening of throttle
position. In 4WD 4 low, the transmission should be maintained in 3
rd –Gear position.
Under manual mode, the transmission will be kept in 3rd-Gear.
D-gear
(drive) It can process the 1
st, 2nd, 3rd and 4th –Gear position operation and gear-shifting operation
of (1-2), (1-3), (2-3), (2-4), (3-4), (4-3), (4-2), (3-1) and (2-1). This shifting operation is
processed by taking the vehicle speed, throttle position, throttle position switching
frequency (or forced Gear-decreasing) as the parameter. The locking clutch can process
the locking action in 3rd –Gear, 4
th-Gear according to the type of vehicle. Refer to user
manual of vehicle.
N-Gear
(neutral gear) Only the rear brake belt is engaged at this time. It determines whether the function can
be realized according to the vehicle speed, engine speed and throttle position. But the
gear-position sensor allows the starting of engine. Allow the slide of N-Gear.
R-Gear
(reverse gear) Set the anti-misoperation in forward function according to the vehicle speed, engine
speed and throttle position opening to realize the reverse operation. The gear-position
sensor can start the revers e lamp.
P-gear
(parking gear) Only the rear brake belt is engaged at this time. The function can be determined
according to the vehicle speed, engine speed and throttle position. The output shaft of
transmission is locked. The gear-position sensor can start the engine.

Automatic transmission-7
Indicator lamp
Figure 2.2
control system
General
The transmission has two sets of control system, a electric control system and a hydraulic control system. The electric control
system monitors the vehicle parameter and adjusts the transmission performance; the hydraulic control system executes the
command of electric control system.
Electric control system
The electric control system consists of the sensor, TCU and 7 solenoid valves. TCU read in the data and make the output under the
control of software based on the value stored in Read Only Memory (ROM).
TCU controls the hydraulic control system and the control is realized through the valve and pump assembly. The system includes
7 solenoid valves, in which 6 valves are used to control the line pressure, operate the shift valve and hydraulic torque converter lock
clutch and switch on and off two regulating valves (Two regulating valves control the shift feel). The seventh solenoid valve is the
pressure regulating solenoid valve (VPS) which controls the shift feel with other three regulating valves. Figure 3.1 is the typical TCU
control system plan.
The figure includes all elements of electric control system involved in the section.
throttle position
open sensor
Engine speed
vehicle speed
Transmission
fluid temperature
mode selection
(instrument panel
/console )
Gear sensor
Forced step-
decreasingK line
shifting
logic
shifting
sensing
line
pressurehydraulic
control
system
Solenoid valve 1
Solenoid valve 2
Solenoid valve 3
Solenoid valve 4
Solenoid valve 5
Solenoid valve 6
Solenoid valve 7
pressure regulating
solenoid valve
Mode indicator lamp
Gear indicator lamp
set and other
necessary equipment
indication

Automatic transmission-9
Table 3.1 Feature parameter of temperature /resistance
-2013,638
5,177
2,278
177
7517,287
6,616
2,723
196
85


Figure 3.2 Pin number of temperature /resistance
Pin No. Wire color Connected solenoid valve
1 Red solenoid valve 1
2 Blue solenoid valve 2
3 yellow solenoid valve 3
4 orange solenoid valve 4
5 green solenoid valve 5
6 violet solenoid valve 6
7 brown solenoid valve 7
8 green solenoid valve 5
9 white temperature sensor
10 white temperature sensor
ohm
Temperature
Centigrade degree

Automatic transmission-10
Figure 3.3 Schematic diagram of temperature sensor position and solenoid valve wiring
2.Throttle position sensor
Figure 3.4 gear sensor
solenoid valve 4 (orange )
ground wire (2)
solenoid valve 7 power supply connectorolenoid valve 6 (violet ) ground wiretemperature sensor solenoid valve (red ) ground wire
solenoid
valve (green )
solenoid valve (yellow )
solenoid valve (blue ) ground wire
ground wire
ground wire

Automatic transmission-46
Pin
No. Type 2W D Description
A24 CAN (-ve) I/O ○ CAN hidden communication end
A23 CAN (+ve) I/O ○ CAN exposed communication end
A22 K line communication
connection I/O ● Diagnosis information and car code
A21 Nonuse ―― ○ －－－－－
A20 Nonuse ―― ○ －－－－－
A19 Shaft speed sensor
signal IP ○ The sensor sends the shaft speed signal to T CU
A18 Nonuse ―― ○ －－－－－
A17 Nonuse ―― ○ －－－－－
A16 Nonuse ―― ○ －－－－－
A15 Nonuse ―― ○ －－－－－
B6 Gear-position IP ● T h e sw itch ha s th e variab le-vo ltage ; in dicate the
gear-position steering colum n selected (PRND321). The
vo ltage is variab le in the ran ge o f 0 V --5 V .
B5 transm ission fluid
temperature IP ● The sensor indicates the transmission fluid temperature.
High R=Low temperature
Low R= High temperature
The voltage is variable in the range of 0V to 5V
B 4 so leno id va lve 4 O P ● N /O FF no rm al-op ened so leno id valve , co m b ined w ith the
O N /O FF w itch o f so len oid valve 3; en sure the sh ifting
quality and sequence
B 3 so leno id va lve 1 O P ● ON/OFF normal-opened solenoid valve; combined with
o the r so leno id va lve; u sed to determ ine the selected
gear-position.
B2 Nonuse ―― ○ －－－－－
B1 R e tu rn so len oid va lve
5 IP ● Using for grounding of VPS and current of circuit can be
detected, then process the feedback control for the VPS.
B14 Gear-position －
grounding GND ● PRND321 Gear-position switch grounding
B13 transm ission fluid
temperature －
grounding GND ● Connected to grounding pin of temperature sensor.
B12 solenoid valve 6 OP ● ON/OFF normal-opened solenoid valve, determine the
high or low of line pressure
B11 solenoid valve 2 OP ● O N /O FF norm al-o pened so leno id va lve, co m bined w ith
o the r so leno id valves; u sed to d eterm ine the selected
gear-position.
B10 solenoid valve 3 OP ● O N /O FF norm al-o pened so leno id va lve, co m bined w ith
the O N /O FF sw itch of solenoid valve 4; ensure the
shifting quality and sequence
B 9 so leno id va lve 7 O P ● ON/OFF normal-opened solenoid valve, hydraulic torque
converter locking; increase the efficiency of medium
speed run.
B8 Nonuse ―― ○ －－－－－
B 7 so leno id va lve 5 (+ ve) O P ● It is the so leno id va lve w hich can ch an ge th e p ressu re
d urin g the sh iftin g a nd on /o ff o f so leno id valve .
●= connected line ○= unconnected line ＊=only
OP= output IP=input I/O=input/output
GND=grounding REF=reference PWR=power
Table 6.1.1 Description of TCU pin