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
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