2005 Chevrolet Impala Logo
Michael Stewart Posted on Oct 29, 2015
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Power windows dont work

Checked fuses.so is there a relay?

1 Answer

Jeff Armer

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  • Chevrolet Master 15,575 Answers
  • Posted on Oct 29, 2015
Jeff Armer
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Joined: Nov 22, 2012
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There is a circuit breaker for power windows .
Power Window System Components
The power window system consists of the following components:
?€¢
Driver Door Switch (DDS)


?€¢
Passenger Door Switch (PDS)


?€¢
Body Control Module (BCM)


?€¢
Rear door power window switches


?€¢
Power window motors in each of the doors


?€¢
PWR WDO Circuit Breaker


Power Window System Controls
The power window system will operate anytime the Retained Accessory Power (RAP) system is active or when the ignition switch is in the ACCY or ON position.
The driver master control switches are integrated into the DDS. When a power window switch is activated in the up or down positions the DDS supplies power and ground to the window motor control circuits to drive the window motor in the required direction. Prior to activating a power window motor the DDS will supply the control circuit with a low current bias voltage in order to determine that a short to ground condition does not exist and during window motor operation the DDS continues to monitor the motor current to verify proper window motor operation.
The DDS controls the passenger window by a serial message to the PDS. When a power window switch is activated in the up or down positions the PDS supplies power and ground to the window motor control circuits to drive the window motor in the required direction. Prior to activating a power window motor the PDS will supply the control circuit with a low current bias voltage in order to determine that a short to ground condition does not exist, and during window motor operation the PDS continues to monitor the motor current to verify proper window motor operation. (Scan tool support is available for this system
Check this circuit breaker
RETAINED ACCSRY PRW BRKR 30 amp. located in the left instrument panel fuse box . if the breaker is good check power B+ at the drivers door switch . connector 1 terminal b yellow wire . Sometimes the wires inside the rubber boot coming from body to door break .

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all are dead.
post full symptoms,
all dont go down, all dont go up.
what?

no mater, first step is fuses, if there are fuses and not CB.
then using a scan tool scan to pcm for errors.
the BCM can report windows error via PCM scans, and my solve this.
Fuse 1 feeds the window relay, 15amp fuse,
the relay feeds 12vdc power to the windows master.
if all are dead, up and down , check power to the master
pin 10 if at 12vdc keyon
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