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1994 Fleetwood Diagnostics


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I know the info is here but I just can't seem to find it. Could someone please point me to the information as to how to access the trouble codes in my 94 fleetwood using the climate control system. Thanks in advance!!

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Well I found it on another site and thought I might as well share it here. As I said, I'm sure it is already here somewhere but here it is again. I'm sure the admins will delete it if it is redudnant.

1995 Fleetwood AC electrical or computer issues

Your Cadillac is equipped with a very good on-board diagnostic system capable of reading out the stored trouble codes.

To enter diagnostic 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

00-11 ........................................ Malfunction Indicator Lamp (MIL) circuit

00-13 ....................................... Heated Oxygen sensor voltage out of range

00-14 ........ Coolant temperature sensor signal indicates excessively high temperature

00-15 ......... Coolant temperature sensor signal indicates abnormally cold temperature

00-16 ............................ Distributor low resolution pulse not received by ECM

00-18 .................................. Injector driver circuit voltage to PCM problem

00-21 .................................................. ...... TPS high voltage problem

00-22 .................................................. ....... TPS low voltage problem

00-23 ...................... Inlet air temperature sensor indicates low air temperature

00-24 ........................................... Throttle position angle problem (VSS)

00-25 ............... Inlet air temperature (IAT) sensor indicates high air temperature

00-26 ................... ECM detected wrong potential voltage at #1 quad-driver module

00-27 ................... ECM detected wrong potential voltage at #2 quad-driver module

00-28 ................... ECM detected wrong potential voltage at #3 quad-driver module

00-29 .......................... Secondary air injection pump circuit voltage was wrong

00-31 .................. Cam pulse missing on first pass through internal ECM self test

00-32 .......... EGR open command did not change fuel mixture during off idle operation

00-33 ............................. MAP sensor signal voltage was too high (low vacuum)

00-34 ............................. MAP sensor signal voltage was too low (high vacuum)

00-35 ........................................... MAP sensor signal showed a low vacuum

00-36 ........................................... ECM timing pulse/low resolution pulse

00-37 .................................................. .......... Brake swith stuck ON

00-38 .................................................. ......... Brake swith stuck OFF

00-41 .................................................. ...... EST circuit high voltage

00-42 .................................................. .... PCM did not detect any EST

00-43 .......................... One or both knock sensors were either open or grounded

00-44 ....................... Left oxygen sensor under voltages (closed loop operation)

00-45 ......................... Left oxygen sensor over voltage (closed loop operation)

00-46 ............................................ Anti-Theft Pass Key signal was wrong

00-47 ............................................. Knock sensor signal was not present

00-48 ............................................... No MAF signal with engine running

00-50 .................................. PCM detected an ignition low voltage condition

00-51 .................................................. ....... Programmed EEPROM error

00-52 ............................................. Engine oil low temperature detected

00-53 ................................... ECM detected a battery high voltage condition

00-54 ......................................... Fuel pump system voltage problem (high)

00-55 .................... ECM detected lean oxygen sensor during power enrichment mode

00-56 .............................................. Vacuum sensor voltage out of range

00-58 ............ Transmission Fluid Temperature sensor circuit low (high temperature)

00-59 ............ Transmission Fluid Temperature sensor circuit high (low temperature)

00-61 ................ Vacuum sensor voltage problem with secondary port throttle valve

00-62 ............................................ Engine oil high temperature detected

00-63 .................................................. ... Right oxygen sensor problem

00-64 ................. Right oxygen sensor low voltage problem (closed loop operation)

00-65 ................ Right oxygen sensor high voltage problem (closed loop operation)

00-66 ..................................... A/C pressure sensor circuit open or shorted

00-67 ........ ECM did not detect an A/C system pressure change with A/C clutch engaged

00-68 ....... ECM detects voltage on A/C status line after ECM disengaged the A/C relay

00-69 ........ ECM did not detect voltage on A/C status line after ECM commanded A/C ON

00-70 .............. A/C clutch relay circuit showed incorrect potential voltage at PCM

00-72 ........... Transmission output speed changed with vehicle was in park or neutral

00-73 ............................... Pressure control solenoid return amperage problem

00-74 ........... Traction control system active signal with vehicle in park or neutral

00-75 ........................... Ignition low voltage with engine speed above 1000 RPM

00-77 .................. Cooling fan relay #1 control potential voltage incorrect (PCM)

00-78 ........... Cooling fan relay #2 and #3 control potential voltage incorrect (PCM)

00-79 ............. Transmission fluid temperature signal indicates high temp condition

00-81 ......................................... Transmission 2-3 shift solenoid problem

00-82 ......................................... Transmission 1-2 shift solenoid problem

00-83 .................................................. TCC PWM solenoid circuit fault

00-84 ......................................... Transmission 3-2 shift solenoid problem

00-85 ................................. TCC solenoid problem after commanded OFF by PCM

00-90 .................................................. .... TCC solenoid circuit fault

00-91 ............... One to Four up-shift lamp control signal showed incorrect voltage

00-95 .................................................. ....... Change oil lamp circuit

00-96 .................................................. .......... Low oil lamp circuit

00-97 ............................... VSS output signal showed incorrect voltage at PCM

00-98 .............................. Tach output signal showed incorrect voltage 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

Read more at http://www.cadillacforums.com/forums/rwd-19xx-1984-deville-fleetwood-1985/192789-1995-fleetwood-ac-electrical-computer-issues.html?ktrack=kcplinkRead'>http://www.cadillacforums.com/forums/rwd-19xx-1984-deville-fleetwood-1985/192789-1995-fleetwood-ac-electrical-computer-issues.html?ktrack=kcplinkRead more at http://www.cadillacforums.com/forums/rwd-19xx-1984-deville-fleetwood-1985/192789-1995-fleetwood-ac-electrical-computer-issues.html?ktrack=kcplink

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