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How the Circuit Works
The two outside mirrors are controlled by the power
mirror switch. Each mirror has two reversible motors:
one motor moves the mirror up and down, and the
other motor moves the mirror left and right.
The power mirror switch contains three switches to
control mirror direction and two switches to select the
left or right mirror. With the ignition switch in ON (II)
and the engine not cranking, battery voltage is
supplied to the power mirror switch through fuse 19
(in the under-dash fuse/relay box). The mirror
selector switch directs voltage from two of the
direction switches to either the left or the right mirror.
Each direction switch is used for more than one
function.
Mirror Up
With the power mirror switch in the up position,
switch 1 is moved to the A position. Switch 1 applies
battery voltage to both the left and right power mirror
up/down motors. If the mirror selector switch is in the
left position, the left up/down motor is grounded
through the mirror selector switch and switch 2 in the
B position to G501. If the right mirror up/down motor
is selected, it is also grounded through switch 2 in
the B position.
Mirror Left
With the power mirror switch in the let position,
switches 1 and 2 are moved to the A position. Switch
2 applies battery voltage to the left or right power
mirror left/right motor as determined by the mirror
selector switch. The selected mirror motor is
grounded through switch 3 in the B position to G501.
When switch 2 is moved to position A, it also applies
battery voltage to the selected mirror up/down motor.
With switch 1 in the A position, battery voltage is
supplied to both sides of the up/down motor, so it
does not move.
Mirror Right
With the power mirror switch in the right position,
switch 3 is moved to the A position. Switch 3 applies
battery voltage through the mirror selector switch to
the left or right left/right motor. The motor is
grounded through the mirror selector switch and
switch 2 in the B position to G501.
Refer to the Service Manual (Section 22, Electrical)
for specific tests or troubleshooting procedures.
Mirror Down
With the power mirror switch in the down position,
switches 2 and 3 are moved to the A position. Switch
2 applies battery voltage to the left or right power
mirror up/down motor as determined by the mirror
selector switch. The selected mirror motor is
grounded through switch 1 in the B position to G501.
When switch 2 is moved to position A, it also applies
battery voltage to the selected mirror left/right motor.
With switch 3 in the A position, battery voltage is
supplied to both sides of the left/right motor, so it
does not move.
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