Switch Test
Calais, Grand Am & Somerset
1) Test circuit fuse by operating horn. If neither mirror
operates, check for battery voltage at center console outside mirror
switch by connecting a test light between Orange wire and ground. If
test light glows, connect test light between Orange wire and Black
wire. If the test light does not glow, check Orange and Black wire
circuits.
2) If left mirror does not operate, place mirror selector
switch in left mirror position. Connect test light to Yellow and Lt.
Green/Black terminals of outside mirror switch. Check the test light
glows when mirror control switch is in up and down position.
3) Connect test light to Lt. Blue and White/Black terminals
of outside mirror switch. Check that test light glows when mirror
control switch is in left and right positions. If test light glows
but mirror does not turn, check wiring and motor. If test light does
not glow when switches are in position to energize its terminals,
install a new outside mirror switch.
4) If right mirror does not operate, place mirror selector
switch in right mirror position. Connect test light to Yellow and Lt.
Green terminals of outside mirror switch. Check that test light glows
when mirror control switch is in up and down position.
5) Connect test light to Lt. Blue/Black and White terminals
of outside mirror switch. Check that the test light glows when mirror
control switch is in left and right position. If test light glows but
mirror does not turn, check wiring and motor. If test light does not
glow when switches are in position to energize its terminals, install
a new outside mirror switch.
Camaro & Firebird
1) Operate right side mirror and check voltage at right
side mirror switch. With switch in up position Orange and Yellow
wires should have 12 volts and all other wires should have zero
volts. With switch in down position Orange and Lt. Green/Black
wires should have 12 volts and all other wires should have zero
volts.
2) With switch in left position Orange and White/Black
wires should have 12 volts and all other wires should have zero
volts. With switch in right position Orange and Lt. Blue wires
should have 12 volts, all other wires should have zero volts.
3) Operate left side mirror and check voltage at left
side mirror switch. With switch in up position Orange and Yellow
wires should have 12 volts and all other wires should have zero
volts. With switch in down position Orange and Lt. Green wires
should have 12 volts and all other wires should have zero volts.
4) With switch in left position Orange and White wires
should have 12 volts and all other wires should have zero volts.
With switch in right position Orange and Lt. Blue wires should
have 12 volts and all other wires should have zero volts.
Corvette
1) Remove connector from mirror selector switch. Turn
ignition on, operate mirror adjuster control and check voltage
at mirror selector switch connector. With control in up position
Yellow, Lt. Green, White and Lt. Blue wires should have battery
voltage and Dark Blue wire should have zero volts.
2) With control in down position Dark Blue wire should
have battery voltage and all other wires should have zero volts.
With control in left position Dark Green wire should have battery
voltage and all other wires should have zero volts.
3) With control in right position Yellow, Lt. Green,
White and Lt. Blue wires should have battery voltage. Dark Green
wire should have zero volts. If voltages are correct, replace the
mirror selector switch.
4) Check voltage at the mirror adjuster control with
connector (C314) attached. With control in up position Pink/Black
and Black/White wires should have battery voltage and Dark Blue
and Black wires should have zero volts.
5) With control in down position Pink/Black and Dark Blue
wires should have battery voltage and Black/White and Black wires
should have zero volts. With control in left position Pink/Black
and Dark Brown wires should have battery voltage and Black wire
should have zero volts.
6) With the control in right position Pink/Black and
Black/White wires should have battery voltage and Dark Brown and
Black wires should have zero volts. If voltages are incorrect,
replace mirror adjuster control.
7) If voltages are correct, select left or right position
at mirror selector switch. Check voltage at connector (C2) of selected
mirror. With the control in up position Black/White wire should have
battery voltage and Yellow wire should have zero volts.
8) With control in down position Yellow wire should have
battery voltage and Black/White wire should have zero volts. With
control in left position, White wire should have battery voltage
and Black/White wire should have zero volts.
9) With the control in right position Black/White wire
should have battery voltage and White wire should have zero volts.
If voltages are incorrect, replace mirror. If voltages are correct,
check wiring back to mirror adjuster control and mirror selector
switch.
Delta 88 & Toronado
1) Check circuit fuse by operating dome lights. Connect
a test light to ground and check for 12 volts at Orange wire. If
test light glows, connect the test light between Orange wire and
Black wire. If test light does not glow, check Orange and Black
wire circuits.
2) If a mirror does not operate, place mirror selector
switch in position to operate inoperative mirror. Connect test
light between Yellow and Lt. Green terminals of outside mirror
switch. Check that test light glows when mirror control switch
is in up and down positions.
3) Connect test light between Dark Blue (Lt. Blue on
Toronado) and White terminals of outside mirror switch. Check
that test light glows when mirror control switch is in left and
right positions.
4) If test light glows but mirror does not turn, check
wiring and motor. If test light does not glow when switches are
in position to energize its terminals, install new outside mirror
switch.
Fiero & 6000
1) Remove outside mirror switch from console, leave
switch connected to wiring harness and check for 12 volts at
Orange wire. Operate left side mirror and check voltage. With
switch in up position Orange and Yellow wires should have 12
volts and all other wires should have zero volts.
2) With the switch in the down position Orange and Lt.
Green/Black wires should have 12 volts and all other wires should
have 0 volts. With switch in left position Orange and White/Black
wires should have 12 volts and all other wires should have zero
volts. With the switch in right position Orange and Lt. Blue (Lt.
Blue/Black on 6000) wires should have 12 volts and all other wires
should have zero volts.
3) Operate right side mirror and check voltage. With switch
in up position Orange and Yellow wires should have 12 volts and all
other wires should have zero volts. With the switch in down position
Orange and Lt. Green wires should have 12 volts and all other wires
should have zero volts.
4) With the switch in left position Orange and White wires
should have 12 volts and all other wires should have zero volts. With
switch in right position Orange and Lt. Blue (Lt. Blue/Black on 6000
model) wires should have 12 volts. All other wires should have zero
volts.
Ninety Eight
1) If neither mirror moves in any direction, check fuse and
wiring between fuse block and outside mirror switch. If problem is
found, repair as necessary. If fuse and wiring are okay, check the
outside mirror switch ground (G201) and wiring between ground and
(C500) connector.
2) If a problem is found, repair as necessary. If ground
and wiring are okay, check continuity between terminals A and B of
outside mirror switch. If there is no continuity, replace switch.
3) If one mirror does not move in any direction, check
wiring between (C500) connector and inoperative mirror. Check the
continuity of outside mirror switch between terminals A and E, and
between terminals F and C for left side mirror. Check continuity of
outside mirror switch between terminals A and D, and between
terminals G and H for right side mirror.
Riviera
1) Remove mirror selector switch from driver's armrest and
leave switch connected to wiring harness. Connect the test light to
ground and check for 12 volts at Orange wire. If test light glows,
connect test light between Orange wire and Black wire. If test light
does not glow, check Orange and Black wire circuits.
2) Operate right side mirror and check for 12 volts at
Orange and Yellow/Black wires. All other wires should have zero
volts. Operate left side mirror and check for 12 volts at Orange
and Yellow wires. All other wires should have zero volts.
Sunbird
1) Test circuit fuse by operating horn. If neither mirror
operates, check for battery voltage at center console outside mirror
switch by connecting a test light between Orange wire and ground. If
test light glows, connect test light between Orange wire and Black
wire. If the test light does not glow, check Orange and Black wire
circuits.
2) If left mirror does not operate, place mirror selector
switch in left mirror position. Connect test light to Yellow and Lt.
Blue terminals of outside mirror switch. Check that test light glows
when mirror control switch is in up and down positions.
3) Connect test light to White and Lt. Blue terminals of
outside mirror switch. Check that the test light glows when mirror
control switch is in left and right positions. If test light glows
but mirror does not turn, check wiring and motor. If test light does
not light when switches are in position to energize its terminals,
install a new outside mirror switch.
4) If right mirror does not operate, place mirror selector
switch in right mirror position. Connect test light to Yellow/Black
and Lt. Blue/Black terminals of outside mirror switch. Check that
test light glows when mirror control switch is in up and down
positions.
5) Connect test light to White/Black and Lt. Blue/Black
terminals of outside mirror switch. Check that the test light glows
when mirror control switch is in left and right positions. If test
light glows but mirror does not turn, check wiring and motor. If
test light does not glow when switches are in position to energize
its terminals, install a new outside mirror switch.
All Other Models
1) Remove mirror selector switch from armrest or instrument
panel and leave switch connected to wiring harness. Connect a test
light to ground and check for 12 volts at Orange wire. If test light
glows, connect test light between Orange wire and Black wire. If test
light does not light, check Orange and Black wire circuits.
2) Operate right side mirror and check voltage at right
side mirror switch. With switch in up position, Orange and Yellow
wires should have 12 volts. All other wires should have zero volts.
With switch in down position, Orange and Lt. Green (Lt. Green/Black
on Skyhawk) wires should have 12 volts. All other wires should have
zero volts.
3) With switch in left position, Orange and Lt. Blue (Lt.
Blue/Black on Skyhawk) wires should have 12 volts. And all other
wires should have zero volts. With switch in right position Orange
and White (White/Black on Skyhawk) wires should have 12 volts. All
other wires should have zero volts.
4) Operate left side mirror and check voltage at left side
mirror switch. With switch in up position Orange and Yellow wires
should have 12 volts. All other wires should have zero volts. With
switch in down position Orange and Lt. Green wires should have 12
volts. All other wires should have zero volts.
5) With switch in left position Orange and Lt. Blue wires
should have 12 volts. All other wires should have zero volts. With
switch in right position Orange and White wires should have 12 volts.
All other wires should have zero volts.