Chery S11 / Chery QQ. Manual — part 66
Chery QQ Service Manual BCM Computer Control System
Horn button wiring broken or loose contact
thereof
Repair or replace
The sound of horn is
low
Insufficient charge of secondary cell
Horn defective
Interference between horn and direction
indicator lamp
Recharge or change the
cell
Replace
Adjust
After releasing the horn
button, the horn would
not stop
Short in the horn button
Replace
Repair
Ⅲ
. Inspection and Repair of the Defrost System
In figure defrost system is schematically shown.
Schematic view of the defrost system
1、Inspection of the conduction of the defroster switch
As shown in the table, if it does not conform to the table, change the defroster
switch.
Inspection of the defroster switch
Switch position
Connection to the
instrument
Conductance
Switch OFF
-
No
- 108 -
Chery QQ Service Manual BCM Computer Control System
Switch ON
1-2
Yes
2、Inspection of defroster wiring
While cleaning the window, wipe with soft cloth along the line, don’t damage the
defroster wiring. Don’t use cleaning agent or cleaning device, otherwise the surface will
be damaged. While inspecting the voltage, insert the negative probe in an end of the
thermal fin, and push the wiring with finger as shown.
Inspection of voltage
Turn the start-up switch to ON, turn the defroster switch to ON, check the voltage at the
midpoints of each wire as shown. If the wire is broken, there is a voltage of about 10v
between the positive terminal of the meter and the midpoints of the wire, there is no
voltage between earth and the midpoints of wire.
Voltage State
About 5V
Normal
About 10V or 0V
Broken
Inspection of voltage of midpoint of the defroster wire
- 109 -
Chery QQ Service Manual BCM Computer Control System
Connect the positive probe of the Voltage meter to positive terminal of the defroster,
negative probe to the earth end. Press the positive probe on the hot wire and move it to
the negative terminal. If the voltage springs from 0V to some V at some point, this point
is the broken point, as shown in the figure. If the defroster wiring is not broken, at the
positive terminal of the defroster wiring the volt meter shows 0V, and during the probe
move to the other terminal, the voltage increases gradually to 12V.
Detection of the broken point of the defroster wiring
3、Repairing of the defroster wiring
Eliminate the tool cleaning broken point with lubricating grease (wax) and organosilicon,
during the repairing, attach adhesive tape on the both side of the defroster wiring. After
mixing of the repairing agent, drop the repairing agent to the broken point in appropriate
amount with electric brush. Remove the adhesive tape after few minutes, as shown in the
figure
Repairing of the defroster wiring
Ⅳ
. Inspection and Repair of Control System of Power Windows
1. Operating mode of power windows
- 110 -
Chery QQ Service Manual BCM Computer Control System
(1)
the function
of
power windows timer
①
After the start-up switch shut off, the power windows are operable within 30 seconds.
If the doors are opened or closed in the period, the power windows can be operated
within another 30 seconds.
②
During lowering the power window, if an overload is detected, the power windows
are operable within 30 secs.
③
Within the last 6 seconds of above-mentioned period, if the door window switch is
hold upwards for over 0.3 second, the door window then works in overloaded state to
prevent that the door window stops in opened state.
(
2)The function of power windows
①
operating condition
In the ON state of the start-up switch, after the start-up switch is turned off(the
operating time of the power window timer is within 30s)
②
operating progress
The power window switch is actuated for over 0.3s, the door window rises and lowers
automatically. During its operating, if the power window switch is actuated once again,
the door window stops.
③
stop conditions of the door windows
A. If the current through the door window motor is higher than 14.5A+1A, the door
window stops after 0.7s operating time.
B. After operating for 6s (required by raising and lowering the door window), the
operating stops.
Re
※
ference: if raising or lowering not completed within 6s, check the overload current
detecting function of door window motor or the installation of the door edging and door
window regulator.
(3)stepping mode power window
①
Operating condition: the same as that of power windows.
②
Within 0.3s, if power window switch is in its raising or lowering position, the
door window operates in stepping mode with the step length of 0.5s.
③
If raising and lowering switch is actuated in same direction N times within 0.3s,
the door window operates for a period of (0.5xN)s.
- 111 -
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст