Power Window System: Other Pontiac Firebird IV

SYSTEM CHECK

1. Before beginning system check, turn ignition on. Ensure there is battery voltage from power window circuit breaker, located in fuse block. Ensure master switch ground circuit is complete. See «POWER WINDOW SYSTEM GROUND POINT»(ref-33108-S07182116172001010900000) . POWER WINDOW SYSTEM GROUND POINT LOCATION Application Location Camaro, Firebird Behind Left Kick Panel
2. With all windows closed, turn ignition switch to RUN position. Briefly (less than .3 second) press left front window switch down. Window should descend a small distance, then stop.
3. Press left front window switch down and release (more than .3 second). Window should descend completely (express mode).
4. Press left front window switch up. Window should raise as long as switch is held up, then stop when switch is released (no express). Repeat step 3). While window is moving down in express mode, press switch upward. Window should stop express decent.
5. Lower and raise other windows from master switch. All windows should operate quietly and smoothly through full range of travel.
6. Lower and raise each window from window switches. All windows should operate quietly and smoothly through full range of travel. Note any symptoms and proceed to appropriate test.

WINDOWS DO NOT OPERATE

1. Turn ignition switch to RUN position. Using a test light, backprobe between ground and Brown wire terminal at master switch connector. If test light is on, go to next step. If test light is off, repair open in Brown wire between power window 30-amp circuit breaker and master switch.
2. Backprobe between Brown wire and Black wire terminals (ground) of master switch harness connector. If test light is on, check for poor connection at master switch. If connection is okay, replace master switch. If test light is off, check for poor connection at ground point. See «POWER WINDOW SYSTEM GROUND POINT»(ref-33108-S07182116172001010900000) under TROUBLE SHOOTING. If connection is okay, repair open in Black wire between master switch and ground connection.

LEFT FRONT WINDOW DOES NOT OPERATE

1. Backprobe between Dark Blue wire and Gray wire terminals at master switch connector. While observing test light, press left window switch at master switch to up and down positions. If test light is on in both positions, go to next step. If test light is off, check for poor connection at master switch. If connection is okay, replace master switch.
2. Backprobe between Dark Blue wire and Gray wire terminals at express down module connector, located at center of dash, above floor tunnel. While observing test light, press left window switch to UP and DOWN positions. If test light is on, go to next step. If test light is off, repair open in Dark Blue wire or Gray wire between master switch and express down module.
3. Backprobe between Dark Blue wire and Brown wire terminals at express down module connector. While observing test light, press left window switch to UP and DOWN positions. If test light is on, go to next step. If test light is off, check for poor connection at express down module. If connection is okay, replace express down module.
4. Disconnect left window motor connector. Connect test light between Dark Blue wire and Brown wire terminals at left window motor connector. While observing test light, press left window switch to UP and DOWN positions. If test light is on, check for poor connection at left window motor. If connection is okay, replace motor. If test light is off, repair open in Dark Blue wire or Brown wire between express down module and left window motor.

RIGHT FRONT WINDOW DOES NOT OPERATE

1. Turn ignition switch to RUN position. Using a test light, backprobe between Dark Blue wire and Brown wire terminals at right window switch connector. While observing test light, press right window switch on master switch to UP and DOWN positions. If test light is on in both switch positions, go to next step. If test light is not on in both switch positions, check for poor connection at master switch. If connection is okay, replace master switch.
2. Backprobe between Light Blue wire and Tan wire terminals at right window switch connector. While observing test light, press right window switch on master switch to UP and DOWN positions. If test light is not on in both switch positions, go to next step. If test light is on in both switch positions, repair open in Dark Blue wire or Brown wire between right window switch and motor.
3. Backprobe between Brown wire and Dark Blue wire terminals at right window switch connector. While observing test light, press right window switch to UP and DOWN positions. If test light is on in both switch positions, go to next step. If test light is not on In both switch positions, check for poor connection at right window switch. If connection is okay, replace right window switch.
4. Backprobe between right window motor harness connector terminals. Press right window switch to UP and DOWN positions. If test light is on in both switch positions, check motor connections. If connections are okay replace window motor. If test light is not on, check Dark Blue wire between right window switch and window motor for open. If okay, replace right window switch.

ONE WINDOW (EXCEPT LEFT FRONT) INOPERATIVE FROM MASTER & INDIVIDUAL SWITCH, ALL OTHERS OPERATE

1. Turn ignition switch to RUN position. Using a test light, backprobe between 2 terminals at inoperative window motor connector. While observing test light, press inoperative window switch (individual switch) to UP and DOWN positions. If test light is not on, go to next step. If test light is on, check for poor connection at inoperative window motor. If connection is okay, replace inoperative window motor.
2. Check continuity of Dark Blue and Brown wires between inoperative window motor connector and corresponding individual switch connector. If continuity exists, go to next step. If continuity does not exist, repair open wire in question.
3. Using a test light, backprobe between the appropriate UP and DOWN terminals on master switch for inoperative window motor. Press master switch for inoperative window to UP and DOWN positions. If test light is not on, replace master switch. If test light is on, check continuity of circuits between inoperative individual switch connector and master switch connector. See «WIRING DIAGRAMS»(ref-33108-S00937641402001010900000) . If circuits are okay replace individual switch in question.