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Stop condition of the door windows: it is the same as that of power windows. In the
stepping mode, once another switch is turned on, the operation (of lowering switch in
raising operation/lowering switch/raising switch in raising operation) stops.
2. Supplying circuit of power window (see theftproof computer)
3. Inspection of the circuit of the power window
1 In this circuit, for the BCM computer (theftproof computer) controlled power
window, the direction of the current through the power window motor is changed
automatically to make the motor rotating clockwise or anticlockwise, so that the door
window is raised or lowered.
2 If the start-up switch turned on, the BCM computer (theftproof computer) actuates
the power window by supplying operating signal to the power window switch.
3 If the start-up switch turned off, the BCM computer (theftproof computer) actuate
the power window relay within the operating delay of 30s, i.e. after the start-up switch
turned off, all the door windows can be actuated within 30s.
4
Push the power window switch upward or downward (over 0.3s), the BCM
computer (theftproof computer) instructs with signal to supply forward or backward
current, so as to rotate the power window motor clockwise or anticlockwise.
5 With the start-up switch on, push the power window switch upward or downward,
check if there is forward or backward current output on the terminals of the BCM
computer (theftproof computer). If not, the switch is defective, if voltage is output
thereon, but the power window wouldn't rise or lower, then the power window motor is
defective.
The power window hoister
Inspection and Repair
4.
1 control device of the power window
Check the conductance of the power window main switch as shown in the figure. If it
does not conform to the figure, replace the power window main switch.
Chery QQ Service Manual
of Electric Components
- 112 -
BCM Computer Control System
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Table of Contents
Troubleshooting
