92 Ford Probe A/C Compressor
JayE
06-19-2005, 09:05 PM
I have a 1992 Ford Porbe GL 2.2, auto. The A/C compressor won't engage. I have checked a number of things and have traced it to no power at the compressor. I understand there may be a relay between the compressor and the fuse box. Can any one confirm this and tell me how to locate and check it?
Jay
Jay
My_Probe_Owns_Me_
08-09-2005, 01:33 AM
[QUOTE=JayE]I have a 1992 Ford Porbe GL 2.2, auto. The A/C compressor won't engage. I have checked a number of things and have traced it to no power at the compressor. I understand there may be a relay between the compressor and the fuse box. Can any one confirm this and tell me how to locate and check it?
Hello fellow 92 GL owner; let me see if I can help you; just joined this forum tongiht so if you already have been taken care of, then you need not read further.
* * * * * * *
I have the shop manual for ALL 1992 Ford Vehicles on CD-ROM. The following is the COMPLETE compressor diagnostic routine for the Manual Air Conditioning System for the 92 Probe.
* I cannot get the copy/paste to work on the wiring diagram. However, reading your text and fallowing the shop manual chart, it seems that you are on the right track.
CC1 CHECK POWER TO COMPRESSOR CLUTCH
l Turn the key to ON, run the engine at idle.
l Turn the A/C ON.
l Turn the blower ON.
l Set the temperature on COLD.
l Does the compressor engage?
l Measure the voltage at the compressor clutch connector "GN/BK" wire.
l Is the voltage greater than 10 volts while the compressor clutch is engaged?
Yes
INSPECT ground of the clutch, and condition of the drive belt and the clutch material.
No 2.2L
GO to «CC2».
No 3.0L
GO to «CC5».
CC2 CHECK "GN/BK" FOR OPENS
l Turn the key to OFF.
l Disconnect the condenser fan relay.
l Disconnect the condenser fan motor.
l Measure the resistance between the compressor clutch "GN/BK" terminal and the condenser fan relay "GN/BK" terminal.
l
Is the resistance less than 5 ohms?
Yes
GO to «CC3».
No
SERVICE the "GN/BK" wire for opens.
CC3 CHECK "GN/BK" FOR SHORTS
l Turn the key to OFF.
l Disconnect the compressor clutch.
l Disconnect the condenser fan relay.
l Disconnect the condenser fan motor.
l Measure the resistance between the condenser fan relay "GN/BK" terminal and ground.
l Measure the resistance between the condenser fan relay "GN/BK" terminal and "BK/W" terminal.
l
Are both resistances greater than 10,000 ohms?
Yes
RECONNECT the compressor clutch and the condenser fan motor. GO to «CC4».
No
SERVICE the "GN/BK" wire for shorts to ground or to key power.
CC4 CHECK CONDENSER FAN RELAY GROUND
l Turn the key to OFF.
l Disconnect the condenser fan relay.
l Measure the resistance between condenser fan relay "BK" terminal and ground.
l Is the resistance less than 5 ohms?
Yes
GO to CC9.
No
SERVICE the "BK" wire for open.
* * * *
CC9 CHECK A/C RELAY (3.0L) OR CONDENSER FAN RELAY (2.2L) POWER
l Disconnect the A/C relay (3.0L).
l Disconnect the condenser fan relay (2.2L).
l Turn the key to ON.
l Turn the A/C to ON.
l Turn the blower ON.
l Measure the voltage at the relay "BK/W" and "GN" terminals.
l Is the voltage greater than 10 volts?
Yes, 2.2L
RECONNECT the condenser fan relay. GO to «CC10».
Yes, 3.0L
RECONNECT the A/C relay. GO to «CC11».
No
SERVICE the wire in question.
CC10 CHECK CONDENSER FAN RELAY (2.2L ONLY)
l Turn the key to ON.
l Turn the blower ON.
l Measure the voltage at the condenser fan relay "GN/BK" terminal.
l Ground the condenser fan relay "BL/BK" terminal.
l Is the voltage greater than 10 volts with the "BL/BK" terminal grounded and less than 1 volt with the terminal open?
Yes
GO to «CC12».
No
REPLACE the condenser fan relay.
CC12 CHECK A/C SWITCH
l Turn the key to OFF.
l Disconnect the blower control switch connector.
l Using an analog VOM, connect the negative (-) lead to the "BL/GN" wire and the positive (+) lead to the "BL/O" wire at the blower control switch.
l Switch the A/C button ON and OFF.
l Does the resistance jump from greater than 10,000 ohms to 0-5 ohms?
Yes
GO to «CC13».
No
REPLACE the blower control switch.
CC13 CHECK SWITCH GROUND
l Turn the key to OFF.
l Disconnect the blower control switch.
l Measure the resistance between blower control switch "BK" terminal and ground.
l Is resistance less than 5 ohms?
Yes, 3.0L
SERVICE the "BL/GN" wire from the A/C relay to blower control switch.
Yes, 2.2L
GO to «CC14».
No
SERVICE the "BK" wire to ground.
CC14 CHECK CCPS CONNECTION
l Turn the key to OFF.
l Turn the A/C OFF.
l Disconnect the blower control switch.
l Disconnect the clutch cycling pressure switch.
l Measure the resistance between the blower control switch "BL/GN" terminal and the clutch cycling pressure switch "BL/GN" terminal.
l Is resistance less than 5 ohms?
Yes
GO to «CC15».
No
SERVICE the "BL/GN" wire for opens.
CC15 CHECK FOR SHORTS
l Turn the key to OFF.
l Turn the A/C OFF.
l Leave the blower control switch and clutch cycling pressure switch disconnected.
l Measure the resistance from the blower control switch connector "BL/GN" wire to ground.
l Is the resistance greater than 10,000 ohms?
Yes
GO to «CC16».
No
SERVICE the "BL/GN" wire for shorts.
CC16 CHECK CCPS OPERATION
l Turn the key to ON, run the engine at idle.
l Turn the A/C ON, turn the blower ON.
l Disconnect the Clutch Cycling Pressure Switch (CCPS).
l Jump the terminals of the CCPS connector together.
l Does the compressor operate with the terminals jumped and stop with the terminals open?
Yes
REPLACE the clutch cycling pressure switch.
No (2.2L)
REFER to the «Powertrain Control/Emissions Diagnosis» Manual.
No (3.0L)
SERVICE the "PK/BK" wire from the CCPS to the integral relay controller.
* * * * * * *
There you go pal - copy/pasted right from the Shop Manual. It was a ton of work just to copy/paste it so I 'feel your pain' in all the work you are going to have to do to execute all the above.
I wish you well -- my compressor engages fine -- but it only blows hot air in these 94 degree days. R12 is what I need...or does R134a work?
Cheers
Hello fellow 92 GL owner; let me see if I can help you; just joined this forum tongiht so if you already have been taken care of, then you need not read further.
* * * * * * *
I have the shop manual for ALL 1992 Ford Vehicles on CD-ROM. The following is the COMPLETE compressor diagnostic routine for the Manual Air Conditioning System for the 92 Probe.
* I cannot get the copy/paste to work on the wiring diagram. However, reading your text and fallowing the shop manual chart, it seems that you are on the right track.
CC1 CHECK POWER TO COMPRESSOR CLUTCH
l Turn the key to ON, run the engine at idle.
l Turn the A/C ON.
l Turn the blower ON.
l Set the temperature on COLD.
l Does the compressor engage?
l Measure the voltage at the compressor clutch connector "GN/BK" wire.
l Is the voltage greater than 10 volts while the compressor clutch is engaged?
Yes
INSPECT ground of the clutch, and condition of the drive belt and the clutch material.
No 2.2L
GO to «CC2».
No 3.0L
GO to «CC5».
CC2 CHECK "GN/BK" FOR OPENS
l Turn the key to OFF.
l Disconnect the condenser fan relay.
l Disconnect the condenser fan motor.
l Measure the resistance between the compressor clutch "GN/BK" terminal and the condenser fan relay "GN/BK" terminal.
l
Is the resistance less than 5 ohms?
Yes
GO to «CC3».
No
SERVICE the "GN/BK" wire for opens.
CC3 CHECK "GN/BK" FOR SHORTS
l Turn the key to OFF.
l Disconnect the compressor clutch.
l Disconnect the condenser fan relay.
l Disconnect the condenser fan motor.
l Measure the resistance between the condenser fan relay "GN/BK" terminal and ground.
l Measure the resistance between the condenser fan relay "GN/BK" terminal and "BK/W" terminal.
l
Are both resistances greater than 10,000 ohms?
Yes
RECONNECT the compressor clutch and the condenser fan motor. GO to «CC4».
No
SERVICE the "GN/BK" wire for shorts to ground or to key power.
CC4 CHECK CONDENSER FAN RELAY GROUND
l Turn the key to OFF.
l Disconnect the condenser fan relay.
l Measure the resistance between condenser fan relay "BK" terminal and ground.
l Is the resistance less than 5 ohms?
Yes
GO to CC9.
No
SERVICE the "BK" wire for open.
* * * *
CC9 CHECK A/C RELAY (3.0L) OR CONDENSER FAN RELAY (2.2L) POWER
l Disconnect the A/C relay (3.0L).
l Disconnect the condenser fan relay (2.2L).
l Turn the key to ON.
l Turn the A/C to ON.
l Turn the blower ON.
l Measure the voltage at the relay "BK/W" and "GN" terminals.
l Is the voltage greater than 10 volts?
Yes, 2.2L
RECONNECT the condenser fan relay. GO to «CC10».
Yes, 3.0L
RECONNECT the A/C relay. GO to «CC11».
No
SERVICE the wire in question.
CC10 CHECK CONDENSER FAN RELAY (2.2L ONLY)
l Turn the key to ON.
l Turn the blower ON.
l Measure the voltage at the condenser fan relay "GN/BK" terminal.
l Ground the condenser fan relay "BL/BK" terminal.
l Is the voltage greater than 10 volts with the "BL/BK" terminal grounded and less than 1 volt with the terminal open?
Yes
GO to «CC12».
No
REPLACE the condenser fan relay.
CC12 CHECK A/C SWITCH
l Turn the key to OFF.
l Disconnect the blower control switch connector.
l Using an analog VOM, connect the negative (-) lead to the "BL/GN" wire and the positive (+) lead to the "BL/O" wire at the blower control switch.
l Switch the A/C button ON and OFF.
l Does the resistance jump from greater than 10,000 ohms to 0-5 ohms?
Yes
GO to «CC13».
No
REPLACE the blower control switch.
CC13 CHECK SWITCH GROUND
l Turn the key to OFF.
l Disconnect the blower control switch.
l Measure the resistance between blower control switch "BK" terminal and ground.
l Is resistance less than 5 ohms?
Yes, 3.0L
SERVICE the "BL/GN" wire from the A/C relay to blower control switch.
Yes, 2.2L
GO to «CC14».
No
SERVICE the "BK" wire to ground.
CC14 CHECK CCPS CONNECTION
l Turn the key to OFF.
l Turn the A/C OFF.
l Disconnect the blower control switch.
l Disconnect the clutch cycling pressure switch.
l Measure the resistance between the blower control switch "BL/GN" terminal and the clutch cycling pressure switch "BL/GN" terminal.
l Is resistance less than 5 ohms?
Yes
GO to «CC15».
No
SERVICE the "BL/GN" wire for opens.
CC15 CHECK FOR SHORTS
l Turn the key to OFF.
l Turn the A/C OFF.
l Leave the blower control switch and clutch cycling pressure switch disconnected.
l Measure the resistance from the blower control switch connector "BL/GN" wire to ground.
l Is the resistance greater than 10,000 ohms?
Yes
GO to «CC16».
No
SERVICE the "BL/GN" wire for shorts.
CC16 CHECK CCPS OPERATION
l Turn the key to ON, run the engine at idle.
l Turn the A/C ON, turn the blower ON.
l Disconnect the Clutch Cycling Pressure Switch (CCPS).
l Jump the terminals of the CCPS connector together.
l Does the compressor operate with the terminals jumped and stop with the terminals open?
Yes
REPLACE the clutch cycling pressure switch.
No (2.2L)
REFER to the «Powertrain Control/Emissions Diagnosis» Manual.
No (3.0L)
SERVICE the "PK/BK" wire from the CCPS to the integral relay controller.
* * * * * * *
There you go pal - copy/pasted right from the Shop Manual. It was a ton of work just to copy/paste it so I 'feel your pain' in all the work you are going to have to do to execute all the above.
I wish you well -- my compressor engages fine -- but it only blows hot air in these 94 degree days. R12 is what I need...or does R134a work?
Cheers
JayE
08-09-2005, 02:43 PM
My Probe, thanks for the information and all of the work to provide the information. I'm not sure I'm savy enough to follow all of that, but I'm gonna give it a try.
My probe was converted from R12 to 134A several years ago.
Thank again.
Jay
My probe was converted from R12 to 134A several years ago.
Thank again.
Jay
My_Probe_Owns_Me_
08-09-2005, 04:37 PM
You are welcome Jay.
One note: according to the shop manual, only the 3.0L has a relay for A/C--there is no mention of a relay for the 2.2L - unless you are talking about the condensor fan relay.
The following is a copy/paste of the shop manual description of the compressor for the 2.2L:
* * * * * *
«1992 Probe Table of Contents»
«Group 12: CLIMATE CONTROL SYSTEM»
«Section 12-03C: Compressor and Clutch -- 2.2L»
DESCRIPTION AND OPERATION
The Nippondenso model 10P15A compressor is a swash plate, ten- cylinder design.
The compressor main shaft is driven by a belt from the engine crankshaft pulley. Five double-acting pistons, positioned axially around the compressor shaft, operate in a front and rear cylinder assembly. The pistons are actuated by a swash plate pressed on the compressor shaft. The swash plate changes the rotating action of the shaft to provide a reciprocation driving force to each of the five pistons. This driving force is applied, through shoes and balls, to the midpoint of each of the double ended pistons.
Reed-type suction and discharge valves are mounted in valve plates between the cylinder assembly and the head at each end of the compressor. The heads are connected to each other by gas-tight passageways which direct refrigerant gas to a common output.
A magnetic clutch drives the compressor shaft. When voltage is applied to the clutch field coil, the clutch plate and hub assembly (which is solidly coupled to the compressor shaft) is drawn rearward by magnetic force toward the pulley which rotates freely on the compressor front head casting. The magnetic force locks the clutch plate and hub assembly and the pulley together as one unit. The compressor shaft then turns with the pulley. When voltage is removed from the clutch field coil, springs in the clutch plate and hub assembly move the clutch plate away from the pulley, and the clutch plate, hub assembly and compressor shaft cease to rotate.
* * * * * * *
I do not have experience working with A/C. With my limited knowledge of A/C, I highlighted in red what I believe may be the problem in your case. Yes, a multi-meter is requisite. Also, make sure that your blower switch is on "1" or higher becuase the A/C will not work on "0".
Just take it one step at a time. I went back and ripped out all the CCs that are not pertaining to the 2.2L--so it looks cleaner and less intimidating now.
:2cents: Think of the $80/hour shop labor you will save finding the problem yourself! :2cents:
Cheers
One note: according to the shop manual, only the 3.0L has a relay for A/C--there is no mention of a relay for the 2.2L - unless you are talking about the condensor fan relay.
The following is a copy/paste of the shop manual description of the compressor for the 2.2L:
* * * * * *
«1992 Probe Table of Contents»
«Group 12: CLIMATE CONTROL SYSTEM»
«Section 12-03C: Compressor and Clutch -- 2.2L»
DESCRIPTION AND OPERATION
The Nippondenso model 10P15A compressor is a swash plate, ten- cylinder design.
The compressor main shaft is driven by a belt from the engine crankshaft pulley. Five double-acting pistons, positioned axially around the compressor shaft, operate in a front and rear cylinder assembly. The pistons are actuated by a swash plate pressed on the compressor shaft. The swash plate changes the rotating action of the shaft to provide a reciprocation driving force to each of the five pistons. This driving force is applied, through shoes and balls, to the midpoint of each of the double ended pistons.
Reed-type suction and discharge valves are mounted in valve plates between the cylinder assembly and the head at each end of the compressor. The heads are connected to each other by gas-tight passageways which direct refrigerant gas to a common output.
A magnetic clutch drives the compressor shaft. When voltage is applied to the clutch field coil, the clutch plate and hub assembly (which is solidly coupled to the compressor shaft) is drawn rearward by magnetic force toward the pulley which rotates freely on the compressor front head casting. The magnetic force locks the clutch plate and hub assembly and the pulley together as one unit. The compressor shaft then turns with the pulley. When voltage is removed from the clutch field coil, springs in the clutch plate and hub assembly move the clutch plate away from the pulley, and the clutch plate, hub assembly and compressor shaft cease to rotate.
* * * * * * *
I do not have experience working with A/C. With my limited knowledge of A/C, I highlighted in red what I believe may be the problem in your case. Yes, a multi-meter is requisite. Also, make sure that your blower switch is on "1" or higher becuase the A/C will not work on "0".
Just take it one step at a time. I went back and ripped out all the CCs that are not pertaining to the 2.2L--so it looks cleaner and less intimidating now.
:2cents: Think of the $80/hour shop labor you will save finding the problem yourself! :2cents:
Cheers
therealrayman
08-12-2005, 12:56 PM
you copy and paste way too much shop stuff from other sources :sly: :sly: :sly: :sly:
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