: 95 Fleetwood full heat all the time



CTSV OWNER
05-11-09, 10:33 PM
Oh man it's always full heat all the time. No matter where I put the control settings I get nothing but heat.

Anyone have ideas where I can start? I'm going to disconnect the heater hoses now, just for some relief.
:flame:


Dave

thefleetwoodguy
05-11-09, 10:39 PM
Oh man it's always full heat all the time. No matter where I put the control settings I get nothing but heat.

Anyone have ideas where I can start? I'm going to disconnect the heater hoses now, just for some relief.
:flame:


Dave
sounds like the electronic control isnt working, may need a dash controller or the electronic unit thats on the heater box did you check for codes onj the hvac
I have any potential parts you may need
http://img.photobucket.com/albums/v301/hemijimbo/STA71127-1.jpg
http://img.photobucket.com/albums/v301/hemijimbo/STA71128.jpg
is the fan running on high or just cant switch to cool mode??

CTSV OWNER
05-12-09, 09:00 AM
I don't know how to get the codes. I will have to do a search. The fan speeds are all ok, and the modes change correctly, I just cannot change the tempature even though the setting shows the degrees I ask for.

For now my feet stay very warm. lol


Dave

thefleetwoodguy
05-12-09, 10:18 AM
I don't know how to get the codes. I will have to do a search. The fan speeds are all ok, and the modes change correctly, I just cannot change the tempature even though the setting shows the degrees I ask for.

For now my feet stay very warm. lol


No. Description Range Default Value Units
-00 PCM System Diagnostic Trouble Codes ...............................................
-01 CCM System Diagnostic Trouble Codes ...............................................
-02 ACAC (HVAC) System Diagnostic Trouble Codes .................
Dave
here the info Dave
the procedure on checking for fault codes through the a/c controls

might help you i/d your issue
Your Cadillac is equipped with a very good on-board diagnostic system capable of reading out the stored trouble codes.
To enter diagnotic mode:

* With the ignition in the "RUN" position (engine does not necessarily need to be running, but it will work either way).
* Push (and hold) "OFF" and "WARMER" simultaneously on the Electronic Climate Control (ECC) until all telltales lights illuminate (segment check).
* Release the "OFF" and "WARMER" buttons.
* System is now in diagnostic mode. "00" (zero-zero) should now be displayed. This is the pointer.
* Pressing "OUTSIDE TEMP" will allow you to display the corresponding code for the pointer.
* Use the "FAN SPEED" override switch (UP/DOWN) to increment or decrement the pointer number.
* Pressing "AUTO" or turning the ignition switch "OFF" exits diagnotic mode.

Pointers 00-04 contain the stored trouble codes.

* "00" = Powertrain Control Module (PCM) codes
* "01" = Central Control Module (CCM) codes
* "02" = Heating, Ventilation and Air-Conditioning (HVAC) codes
* "03" = Supplemental Inflatable Restraint (SIR) codes
* "04" = Anti-lock Brake/Traction Control System (ABS/TC) Codes

Codes prefixed by a "1" are history codes.
A code can be cleared by pressing the "OFF" button while that particular code is being displayed.
1993 5.7L Throttle Body Injection, VIN 7
1994-1995-1996 5.7L Fuel Injection, VIN P
Powertrain Control Module (PCM) Codes

Code Description
at PCM

Central Control Module (CCM) Codes

Code Description
01-20 ................ Retained Accessory Power (RAP) enable circuit shorted to battery
01-21 ......... Retained Accessory Power (RAP) enable circuit open or shorted to ground
01-22 .................. Delayed Interior Light (DIL) enable circuit shorted to battery
01-23 ........... Delayed Interior Light (DIL) enable circuit open or shorted to ground
01-24 ...................................... Courtesy output circuit shorted to battery
01-25 ............................... Courtesy output circuit open or shorted to ground
01-26 ......... Variable Effort Steering (VES) output circuit open or shorted to ground
01-27 ........................................... VES output circuit shorted to battery
01-28 ............................................ VES tracking error (open or shorted)
01-30 .............................. PASS key fault telltale circuit shorted to battery
01-31 ....................... PASS key fault telltale circuit open or shorted to ground
01-32 .......................................... Fuel enable circuit shorted to battery
01-33 ................................... Fuel enable circuit open or shorted to ground
01-34 ...................................... Headlamp enable circuit shorted to battery
01-35 .................................. Parking lamp enable circuit shorted to battery
01-36 ................... Daytime Running Lamps (DRL) enable circuit shorted to battery
01-37 ............ Daytime Running Lamps (DRL) enable circuit open or shorted to ground
01-40 ......................... Delay pot circuit shorted to ground (Twilight Sentinel)
01-41 ................ Delay pot circuit open or shorted to battery (Twilight Sentinel)
01-42 .......................................... Key resistor circuit shorted to ground
01-43 ................................. Key resistor circuit open or shorted to battery
01-44 ......................... Steering wheel sensor circuit open or shorted to ground
01-45 ........................ Steering wheel sensor circuit open or shorted to battery
01-46 .................................................. .......... CCM Internal Failure
01-47 .................................................. ... Canadian Select Input Error

Heating, Ventilation and Air Conditioning (HVAC) Codes

Code Description
02-01 ................................... Outside Air Temperature Sensor Circuit (open)
02-02 ................................ Outside Air Temperature Sensor Circuit (shorted)
02-03 .................................... In-Car air temperature sensor circuit (open)
02-04 ................................. In-Car air temperature sensor circuit (shorted)
02-05 ...................................... Sun load temperature sensor circuit (open)
02-06 ................................... Sun load temperature sensor circuit (shorted)
02-10 .................................................. .. Air mix motor circuit (open)
02-11 ................................................. Air mix motor circuit (shorted)
02-26 .................................. Serial Data Communication error (shorted/open)
02-27 .................................................. ....... Invalid EEPROM detected

Supplemental Inflatable Restraint (SIR) Codes

Code Description
03-15 ..................................... Passenger initiator circuit resistance high
03-16 ...................................... Passenger initiator circuit resistance low
03-17 ................................................ Passenger initiator circuit open
03-21 ........................................ Driver initiator circuit resistance high
03-22 ......................................... Driver initiator circuit resistance low
03-24 .................................................. . Initiator circuit voltage low
03-25 ............................................. Initiator circuit short to ignition
03-26 .................................................. . Driver initiator circuit open
03-35 ................................. Discriminating sensor open or shorted to ground
03-36 ............................. Discriminating sensor closed or shorted to ignition
03-51 .................................................. ........ Frontal crash detected
03-52 .................................................. ................ Data area full
03-61 .................................................. . SIR indicator circuit failure
03-62 ......................................... Redundant SIR indicator circuit failure
03-71 .................................................. ............ Internal SDM Fault

Anti-Lock Brake/Traction Control (ABS/TC) Codes

Code Description
04-21 .................................................. ...... Front wheel speed sensor
04-23 ............................... Wheel speed sensor circuit continuity malfunction
04-25 .................................................. ...... Front wheel speed sensor
04-27 ............................... Wheel speed sensor circuit continuity malfunction
04-28 ................................ Wheel speed sensor circuit frequency malfunction
04-31 .................................................. ....... Rear wheel speed sensor
04-33 ............................... Wheel speed sensor circuit continuity malfunction
04-35 .................................................. ....... Rear wheel speed sensor
04-37 ............................... Wheel speed sensor circuit continuity malfunction
04-41 .................................... Right Front Inlet Valve Solenoid malfunction
04-42 ................................... Right Front Outlet Valve Solenoid malfunction
04-44 ................................................ Pilot Valve Solenoid Malfunction
04-45 ..................................... Left Front Inlet Valve Solenoid malfunction
04-46 .................................... Left Front Outlet Valve Solenoid malfunction
04-47 ............................................... TCS Prime Valve (ASV) Malfunction
04-48 ........................... TCS Master Cylinder Isolation Valve (USV) Malfunction
04-51 ..................................... Right Rear Inlet Valve Solenoid malfunction
04-52 .................................... Right Rear Outlet Valve Solenoid malfunction
04-55 ...................................... Left Rear Inlet Valve Solenoid malfunction
04-56 ..................................... Left Rear Outlet Valve Solenoid malfunction
04-58 .................................... EBTCM Internal Adjuster Assembly Malfunction
04-61 ................................................ BPM Valve Pump Motor Malfunction
04-62 .................................................. ........ RPM Signal Malfunction
04-63 .............................................. BPM Valve Power Supply Malfunction
04-64 ............................................ Throttle position signal malfunction
04-65 .................................................. ..... Adjuster assembly circuit
04-66 ........................................... Adjuster assembly control malfunction
04-67 ............................................. Throttle position sensor comparison
04-71 .................................................. .... EBTCM Internal Malfunction
04-72 .................................................. . Serial data lin e malfunction
04-73 .................................................. ....... Spark retard monitoring
04-85 .................................................. Low Voltage Condition Detected

Diagnostic Pointers and Parameters

I had to trim down some codes in order to fit here
all the 02 a/c codes are here

Angry Matt
05-13-09, 08:10 PM
My mixture door controller went and did the same thing. If you can get to it, see if it moves by hand. It shouldn't with the car off. It's connected to a rod that looks like allthread and when you change from hot to cold it should move.