AC problem, cold driver side, blows hot pass side
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Advanced
Joined: May 2007
Posts: 87
Likes: 0
From: knoxville tn
AC problem, cold driver side, blows hot pass side
I have a 01 ZO6 with dual climate and the passenger side blows out hot air when ac or fan is on. Driver side still seems pretty cold. Any ideas? Is it electrical or mechanical? Help please
Burning Brakes
Joined: Sep 2003
Posts: 886
Likes: 87
From: Largo FL
If you do a search you will find a lot of info on AC problems. I have worked on and fixed many different C5's and can give you my opinion. Usually if the pass side is cold and driver warm, it is just a simple recharge. If the pass side is warm it is usually doors. Do the easy stuff first. Pull up, make a note of and reset any codes you may have - if you are lucky it will reset doors and work. After that you can try to pull fuse in pass footwell to rest doors or disconnect battery. After that you may have to open up dash and reindex doors - do a search for more info -
Pro
Joined: Sep 2007
Posts: 735
Likes: 7
From: Bucks County Pa
AC Problems
Hi, there is a left and a right door controlled by electric actuators that get their signals from the control head. In this case pulling fuse #27 and after a minute plugging it back in will re calibrate the actuators. Fuse #27 is located in the passenger side footwell electric fuse center. The best way to do it is to turn key to on position, set drive side ac dial to 70, passenger side to straight up between the 2 colors, pull fuse # 27 wait a minute and replace, you should hear the actuator doors move in and out and reset. If this doesn't solve your problem, you may need to reindex a door, replace a door, or fix your control head.
Setting the driver side dial to 60 should bypass the control differential and both sides should blow cold regardless of what the pass side dial is set to.
Good Luck
Setting the driver side dial to 60 should bypass the control differential and both sides should blow cold regardless of what the pass side dial is set to.
Good Luck
Last edited by bestvettever; Jun 26, 2008 at 01:22 PM.
Pro
Joined: Sep 2007
Posts: 735
Likes: 7
From: Bucks County Pa
Replace AC Pass side Actuator Door
Hi if you did the recalibration, and it is imperative to pull fuse #27 and wait the full 60 seconds befor replacing then the instructions are below for actuator door replacement.
Good Luck
[COLOR="Purple"]++++++++++++++++++++++++++++++++++
Trim Pad Replacement - Instrument Panel (I/P) Upper
Removal Procedure
Remove the console. Refer to Console Replacement .
Remove the IP accessory trim plate. Refer to Trim Plate Replacement - Instrument Panel (I/P) Accessory .
Remove the driver knee bolster trim panel. Refer to Trim Panel Replacement - Knee Bolster .
Remove the instrument panel compartment. Refer to Compartment Replacement - Instrument Panel (I/P) .
Remove the windshield defroster grille. Refer to Defroster Grille Replacement .
Insert the DRL and sunload sensors, if equipped, into the nearest openings in the windshield defroster duct. Moving the sensors into the defroster duct provides additional clearance to remove the trim pad.
Remove the windshield side garnish moldings. Refer to Windshield Side Garnish Molding Replacement in Stationary Windows.
Remove the screws retaining the upper trim pad to the defroster duct.
Remove the screws retaining the upper trim pad to the LH and RH hinge pillars.
Remove the screws retaining the IP cluster bezel to the upper trim pad.
Remove the screws retaining the upper trim pad to the driver knee bolster outer bracket and the center support bracket.
Remove the screw retaining the upper trim pad to the passenger SIR bracket.
Tilt the steering wheel to the lowest position.
Lift the rearward edge of the upper trim pad approximately 5 cm (2 in) to provide clearance for the air distribution duct located on the underside of the trim pad.
SLOWLY pull the upper trim pad away from the windshield while guiding the tabs on the LH and RH side of the trim pad past the hinge pillars.
Disconnect the hazard warning switch electrical connector.
Remove the upper trim pad from the vehicle.
Installation Procedure
Connect the hazard warning switch electrical connector.
Install the IP upper trim pad into position.
Tilt the forward edge of the trim pad down slightly.
SLOWLY begin to move the trim pad into position while guiding the tabs on the LH and RH side of the trim pad past the hinge pillars.
Locate the trim pad by guiding the alignment notch on the underside of the pad onto the alignment pin on the dash panel.
Lower the rearward edge of the pad into place.
Remove the DRL and sunload sensors, if equipped, from the openings in the windshield defroster duct and position above the trim pad.
Notice
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the screws retaining the upper trim pad to the windshield defroster duct. Tighten
Tighten the IP upper trim pad to windshield defroster duct screws to 1.9 N·m (17 lb in).
Install the screws retaining the upper trim pad to the LH and RH hinge pillars. Tighten
Tighten the IP upper trim pad to LH and RH hinge pillar screws to 2.5 N·m (22 lb in).
Install the screws retaining the upper trim pad to the driver knee bolster outer bracket, the center support bracket and the passenger SIR bracket. Tighten
Tighten the IP upper trim pad to driver knee bolster outer bracket screw to 1.9 N·m (17 lb in).
Tighten the IP upper trim pad to IP center support bracket screws to 1.9 N·m (17 lb in).
Tighten the IP upper trim pad to passenger SIR bracket screw to 1.9 N·m (17 lb in).
Install the screws retaining the IP cluster bezel to the upper trim pad. Tighten
Tighten the IP cluster bezel to IP upper trim pad screws to 1.3 N·m (12 lb in).
Install the windshield side garnish moldings. Refer to Windshield Side Garnish Molding Replacement in Stationary Windows.
Install the windshield defroster grille. Refer to Defroster Grille Replacement .
Install the instrument panel compartment. Refer to Compartment Replacement - Instrument Panel (I/P) .
Install the driver knee bolster trim panel. Refer to Trim Panel Replacement - Knee Bolster .
Install the IP accessory trim plate. Refer to Trim Plate Replacement - Instrument Panel (I/P) Accessory .
Install the console. Refer to Console Replacement . [/COLOR
++++++++++++++++++++++++++++++++++
Kick-Up Panel Replacement - Front Floor
Removal Procedure
Disengage the kick-up panel upper latches.
Open the kick-up panel.
Lift the kick-up panel's lower edge up out of the slots in the multi-use relay bracket.
Remove the kick-up panel.
Installation Procedure
Open the latches on the kick-up panel.
Position the kick-up panel to the opening in the floor and insert the kick-up panel lower tabs into the slots in the multi-use bracket.
Close the panel and push the latches into the holes.
Engage the latches.
++++++++++++++++++++++++++++++++++
Closeout/Insulator Panel Replacement - Right
Removal Procedure
Using a flat bladed tool, carefully pry the I/P courtesy lamp assembly from the RH lower closeout panel.
Remove the RH lower closeout panel push-in retainers from the I/P lower support beam.
Lower the closeout panel slightly, and finesse the left side of the closeout panel from above the driveline tunnel.
Insert the I/P courtesy lamp assembly up through the opening in the closeout panel.
Continue to lower the closeout panel, then pull to remove from the dash panel studs.
Remove the closeout panel.
Installation Procedure
Install the RH closeout panel onto the dash panel studs.
Insert the I/P courtesy lamp down through the opening in the closeout panel.
Raise the closeout panel slightly, and finesse the left side of the closeout panel into position above the driveline tunnel.
Install the closeout panel push-in retainers to the I/P lower support beam.
Align the I/P courtesy lamp to the closeout panel opening, then push to secure.
++++++++++++++++++++++++++++++++++
Air Temperature Actuator Replacement - Right
Removal Procedure
Remove the front floor kick-up panel. Refer to Kick-Up Panel Replacement - Front Floor in Interior Trim.
Remove the cover from the IP electrical center.
Remove the IP upper trim pad. Refer to Trim Pad Replacement - Instrument Panel (I/P) Upper in Instrument Panel, Gages and Console.
Disconnect the RH side window defogger outlet duct - lower from the windshield defroster duct, then reposition the side window defogger outlet duct forward.
Remove the defroster door actuator.
Remove the I/P lower insulator panel - RH. Refer to Closeout/Insulator Panel Replacement - Right in Instrument Panel, Gauges and Console.
Remove the lower half of the RH floor air outlet duct. Using a flat bladed tool, release the retaining tabs, then remove the lower duct.
Remove the floor air outlet duct retaining screws.
Reposition the floor air outlet duct downward to better access the air temperature actuator.
Disconnect the air temperature actuator electrical connector.
Remove the air temperature actuator screws.
Remove the air temperature actuator.
Installation Procedure
Position the air temperature actuator, then align the slots in the actuator driver to the flats on the RH temperature door shaft.
Slide the air temperature actuator onto the shaft, while aligning the actuator locating hole to the forward alignment pin on the HVAC module case. The actuator should be completely seated onto the temperature door shaft and the actuator mounting holes should be flush with the mounting bosses on the HVAC module case.
Notice
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the air temperature actuator retaining screws. Tighten
Tighten the screws to 1.5 N·m (13 lb in).
Connect the air temperature actuator electrical connector.
Position the floor air outlet duct to the HVAC module case.
Install the floor air outlet duct retaining screws. Tighten
Tighten the screws to 1.6 N·m (14 lb in).
Install the lower half of the RH floor air outlet duct. Align the retaining tabs and snap into place.
Install the IP lower insulator panel - RH. Refer to Closeout/Insulator Panel Replacement - Right in Instrument Panel, Gauges and Console.
Install the defroster door actuator.
Position and connect the RH side window defogger outlet duct - lower to the windshield defroster duct.
Install the I/P upper trim pad. Refer to Trim Pad Replacement - Instrument Panel (I/P) Upper in Instrument Panel, Gauges and Console.
Install the cover to the IP electrical center.
Install the front floor kick-up panel. Refer to Kick-Up Panel Replacement - Front Floor in Interior Trim.
Recalibrate the actuators. Refer to Re-Calibrating Actuators .
++++++++++++++++++++++++++++++++++
Good Luck
[COLOR="Purple"]++++++++++++++++++++++++++++++++++
Trim Pad Replacement - Instrument Panel (I/P) Upper
Removal Procedure
Remove the console. Refer to Console Replacement .
Remove the IP accessory trim plate. Refer to Trim Plate Replacement - Instrument Panel (I/P) Accessory .
Remove the driver knee bolster trim panel. Refer to Trim Panel Replacement - Knee Bolster .
Remove the instrument panel compartment. Refer to Compartment Replacement - Instrument Panel (I/P) .
Remove the windshield defroster grille. Refer to Defroster Grille Replacement .
Insert the DRL and sunload sensors, if equipped, into the nearest openings in the windshield defroster duct. Moving the sensors into the defroster duct provides additional clearance to remove the trim pad.
Remove the windshield side garnish moldings. Refer to Windshield Side Garnish Molding Replacement in Stationary Windows.
Remove the screws retaining the upper trim pad to the defroster duct.
Remove the screws retaining the upper trim pad to the LH and RH hinge pillars.
Remove the screws retaining the IP cluster bezel to the upper trim pad.
Remove the screws retaining the upper trim pad to the driver knee bolster outer bracket and the center support bracket.
Remove the screw retaining the upper trim pad to the passenger SIR bracket.
Tilt the steering wheel to the lowest position.
Lift the rearward edge of the upper trim pad approximately 5 cm (2 in) to provide clearance for the air distribution duct located on the underside of the trim pad.
SLOWLY pull the upper trim pad away from the windshield while guiding the tabs on the LH and RH side of the trim pad past the hinge pillars.
Disconnect the hazard warning switch electrical connector.
Remove the upper trim pad from the vehicle.
Installation Procedure
Connect the hazard warning switch electrical connector.
Install the IP upper trim pad into position.
Tilt the forward edge of the trim pad down slightly.
SLOWLY begin to move the trim pad into position while guiding the tabs on the LH and RH side of the trim pad past the hinge pillars.
Locate the trim pad by guiding the alignment notch on the underside of the pad onto the alignment pin on the dash panel.
Lower the rearward edge of the pad into place.
Remove the DRL and sunload sensors, if equipped, from the openings in the windshield defroster duct and position above the trim pad.
Notice
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the screws retaining the upper trim pad to the windshield defroster duct. Tighten
Tighten the IP upper trim pad to windshield defroster duct screws to 1.9 N·m (17 lb in).
Install the screws retaining the upper trim pad to the LH and RH hinge pillars. Tighten
Tighten the IP upper trim pad to LH and RH hinge pillar screws to 2.5 N·m (22 lb in).
Install the screws retaining the upper trim pad to the driver knee bolster outer bracket, the center support bracket and the passenger SIR bracket. Tighten
Tighten the IP upper trim pad to driver knee bolster outer bracket screw to 1.9 N·m (17 lb in).
Tighten the IP upper trim pad to IP center support bracket screws to 1.9 N·m (17 lb in).
Tighten the IP upper trim pad to passenger SIR bracket screw to 1.9 N·m (17 lb in).
Install the screws retaining the IP cluster bezel to the upper trim pad. Tighten
Tighten the IP cluster bezel to IP upper trim pad screws to 1.3 N·m (12 lb in).
Install the windshield side garnish moldings. Refer to Windshield Side Garnish Molding Replacement in Stationary Windows.
Install the windshield defroster grille. Refer to Defroster Grille Replacement .
Install the instrument panel compartment. Refer to Compartment Replacement - Instrument Panel (I/P) .
Install the driver knee bolster trim panel. Refer to Trim Panel Replacement - Knee Bolster .
Install the IP accessory trim plate. Refer to Trim Plate Replacement - Instrument Panel (I/P) Accessory .
Install the console. Refer to Console Replacement . [/COLOR
++++++++++++++++++++++++++++++++++
Kick-Up Panel Replacement - Front Floor
Removal Procedure
Disengage the kick-up panel upper latches.
Open the kick-up panel.
Lift the kick-up panel's lower edge up out of the slots in the multi-use relay bracket.
Remove the kick-up panel.
Installation Procedure
Open the latches on the kick-up panel.
Position the kick-up panel to the opening in the floor and insert the kick-up panel lower tabs into the slots in the multi-use bracket.
Close the panel and push the latches into the holes.
Engage the latches.
++++++++++++++++++++++++++++++++++
Closeout/Insulator Panel Replacement - Right
Removal Procedure
Using a flat bladed tool, carefully pry the I/P courtesy lamp assembly from the RH lower closeout panel.
Remove the RH lower closeout panel push-in retainers from the I/P lower support beam.
Lower the closeout panel slightly, and finesse the left side of the closeout panel from above the driveline tunnel.
Insert the I/P courtesy lamp assembly up through the opening in the closeout panel.
Continue to lower the closeout panel, then pull to remove from the dash panel studs.
Remove the closeout panel.
Installation Procedure
Install the RH closeout panel onto the dash panel studs.
Insert the I/P courtesy lamp down through the opening in the closeout panel.
Raise the closeout panel slightly, and finesse the left side of the closeout panel into position above the driveline tunnel.
Install the closeout panel push-in retainers to the I/P lower support beam.
Align the I/P courtesy lamp to the closeout panel opening, then push to secure.
++++++++++++++++++++++++++++++++++
Air Temperature Actuator Replacement - Right
Removal Procedure
Remove the front floor kick-up panel. Refer to Kick-Up Panel Replacement - Front Floor in Interior Trim.
Remove the cover from the IP electrical center.
Remove the IP upper trim pad. Refer to Trim Pad Replacement - Instrument Panel (I/P) Upper in Instrument Panel, Gages and Console.
Disconnect the RH side window defogger outlet duct - lower from the windshield defroster duct, then reposition the side window defogger outlet duct forward.
Remove the defroster door actuator.
Remove the I/P lower insulator panel - RH. Refer to Closeout/Insulator Panel Replacement - Right in Instrument Panel, Gauges and Console.
Remove the lower half of the RH floor air outlet duct. Using a flat bladed tool, release the retaining tabs, then remove the lower duct.
Remove the floor air outlet duct retaining screws.
Reposition the floor air outlet duct downward to better access the air temperature actuator.
Disconnect the air temperature actuator electrical connector.
Remove the air temperature actuator screws.
Remove the air temperature actuator.
Installation Procedure
Position the air temperature actuator, then align the slots in the actuator driver to the flats on the RH temperature door shaft.
Slide the air temperature actuator onto the shaft, while aligning the actuator locating hole to the forward alignment pin on the HVAC module case. The actuator should be completely seated onto the temperature door shaft and the actuator mounting holes should be flush with the mounting bosses on the HVAC module case.
Notice
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the air temperature actuator retaining screws. Tighten
Tighten the screws to 1.5 N·m (13 lb in).
Connect the air temperature actuator electrical connector.
Position the floor air outlet duct to the HVAC module case.
Install the floor air outlet duct retaining screws. Tighten
Tighten the screws to 1.6 N·m (14 lb in).
Install the lower half of the RH floor air outlet duct. Align the retaining tabs and snap into place.
Install the IP lower insulator panel - RH. Refer to Closeout/Insulator Panel Replacement - Right in Instrument Panel, Gauges and Console.
Install the defroster door actuator.
Position and connect the RH side window defogger outlet duct - lower to the windshield defroster duct.
Install the I/P upper trim pad. Refer to Trim Pad Replacement - Instrument Panel (I/P) Upper in Instrument Panel, Gauges and Console.
Install the cover to the IP electrical center.
Install the front floor kick-up panel. Refer to Kick-Up Panel Replacement - Front Floor in Interior Trim.
Recalibrate the actuators. Refer to Re-Calibrating Actuators .
++++++++++++++++++++++++++++++++++
Last edited by bestvettever; Jun 30, 2008 at 03:00 PM.
Pro
Joined: Sep 2003
Posts: 668
Likes: 35
From: Lantana, TX
Thanks!!! I had this happen to my car at the end of last summer, I never use the A/C myself as my top is always down, but my wife told me about it. Sure enough hot air from the passenger side when the cold was supposed to come out.
I'll be checking this right now, hope to have a positive response in a few minutes!
I'll be checking this right now, hope to have a positive response in a few minutes!
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1st Gear
Joined: Jul 2012
Posts: 1
Likes: 0
From: Lexington KY
Fuse #27?
Hi, there is a left and a right door controlled by electric actuators that get their signals from the control head. In this case pulling fuse #27 and after a minute plugging it back in will re calibrate the actuators. Fuse #27 is located in the passenger side footwell electric fuse center. The best way to do it is to turn key to on position, set drive side ac dial to 70, passenger side to straight up between the 2 colors, pull fuse # 27 wait a minute and replace, you should hear the actuator doors move in and out and reset. If this doesn't solve your problem, you may need to reindex a door, replace a door, or fix your control head.
Setting the driver side dial to 60 should bypass the control differential and both sides should blow cold regardless of what the pass side dial is set to.
Good Luck
Setting the driver side dial to 60 should bypass the control differential and both sides should blow cold regardless of what the pass side dial is set to.
Good Luck
