Operation CHARM: Car repair manuals for everyone.

System Operation

The power mirror switch receives power through the battery supply voltage circuit from the 10A MIRROR Fuse. The power mirror switch also receives a constant ground.

The four positions of the direction switch have multiple switch contacts, the horizontal portion has dual contacts, while the vertical portion has a triplet of contacts. When not in use, the directional contacts are isolated from any circuit. Each of the contacts are connected to opposing sides of the appropriate power mirror motors through the selector switch. The selector switch interrupts or completes these circuits depending on the position of the selector switch (L or R).

If the selector switch is placed in the L position and the up switch is depressed, battery voltage will be supplied to the left outside power mirror vertical motor through the left mirror motor up control circuit and return to the power mirror switch through the left mirror motor down and left control circuit, then to ground and the mirror will move up. If the down switch is depressed, the left mirror motor down and left control circuit supplies battery voltage and the left mirror motor up control circuit completes the path to the power mirror switch, then to ground and the mirror will move down.

The remainder of the mirror functions operate in the same manner as described above. Placing the power mirror switch in opposing positions (left/right or up/down) will reverse the voltage polarity to the mirror motor, utilizing the same circuits and the power mirror will move accordingly.