Pontiac Fiero 1988 Service Manual page 1133

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C: WINDOW MOTOR TEST
B (DK BLU)&
C (BRN)
Test Lamp
Lights
See 3
• If all the results are correct, go to Test C.
1. Check PNK (76) wire for an open (see sche-
matic).
2. Check BLK (150) wire for an open (see
schematic).
3. Replace LH Front Power Window Switch.
B: R H FRONT POWER WINDOW
SWITCH TEST
Connect:
TEST LAMP
At: RH FRONT POWER WINDOW SWITCH
CONNECTOR (Connected)
Condition:
• Ignition Switch: RUN
Connect
Between
Correct Result For Diagnosis
A(PNK)&
Ground
Test Lamp
Lights
Seel
A(PNK)&D
(BLK)
Test Lamp
Lights
See
2
• Operate RH Front Power Window Switch
UPandDN
B (DK BLU/
W H T ) & C
(TAN)
Test Lamp
Lights
See 3
• If all results are correct, go to Test C.
1. Check PNK (76) wire for an open (see sche-
matic).
2. Check BLK (150) wire for an open (see
schematic).
3. Replace RH Front Power Window
Switch.
Connect: T E S T
LAilP
At: SUSPECT WINDOW MOTOR
CONNECTOR (Disconnected)
Conditions:
• Ignition Switch: RUN
• Operate associated Power Window
Switch UP and DN
Connect
Between
Correct Result
For Diagnosis
A (BRN) or
(DK BLU) & B
(DK BLU) or
(TAN)
Test Lamp
Lights
Seel
• If the result is correct, replace the Win-
dow Motor. Refer to the Body Section 5
for replacement procedures.
1. Check the wiring to that Power Window
Switch for an open (see schematic).
CIRCUIT OPERATION
With the Ignition Switch in RUN, voltage is
applied through the WDO Circuit Breaker and
the PNK wire to the Power Window Switches.
With the LH Front Power Window Switch in
UP, voltage is applied through the LH Front
Power Window Switch, and the DK BLU wire
to the LH Front Window Motor. The motor is
grounded through the BRN wire and the DN
contacts of the LH Front Power Window
Switch to G301. The motor runs and the win-
dow goes up. Voltage is similarly applied with
the RH Front Power Window Switch in UP.
In DN, voltage is applied to each motor in the
opposite direction and the window goes down.