Confused on code
Administrator
Joined: Nov 1998
Posts: 71,094
From: Hell was full so they sent me to NJ
Re: Confused on code
See Shoebox's LT1 code list:
http://shbox.com/1/Dtcs.htm
Basically, low AC system pressure due to low R134a.
http://shbox.com/1/Dtcs.htm
Basically, low AC system pressure due to low R134a.
Thread Starter
Registered User
Joined: Jan 2006
Posts: 646
From: Long Island N.Y. Via Powhatan VA
Fred, I did see that, I never had that one come up before, and have had my a/c down before. I didn't even think the PCM cared one way or another about the A/C system on OBD 1. It's strictly an A/C dtc?
Administrator
Joined: Nov 1998
Posts: 71,094
From: Hell was full so they sent me to NJ
Re: Confused on code
Unless they changed the code from 94 to 95 (I have a 94 shop manual) it's specifically for the AC charge level.
DTC 61
A/C SYSTEM PERFORMANCE
5.7L (VIN P) "F" CARLINE (SFI)
Circuit Description:
The PCM monitors A/C refrigerant pressure and A/C evaporator temperature to determine if the A/C system has adequate refrigerant (R134a) charge. The PCM will disable the A/C clutch whenever the refrigerant charge drops below a predetermined value, to reduce the chance of compressor damage. The PCM will cycle the compressor more frequently if the charge is only slightly low......
DTC 61 Will Set When: The PCM calculates refrigerant charge to be below a predetermined level.
Action Taken (PCM will default to): If the PCM determines A/C refrigerant charge to be low, the A/C clutch will be disabled and DTC 61 will be set. DTC 61 will be stored in the PCM memory, but will not turn "ON" the Malfunction Indicator Lamp (MIL).
A/C SYSTEM PERFORMANCE
5.7L (VIN P) "F" CARLINE (SFI)
Circuit Description:
The PCM monitors A/C refrigerant pressure and A/C evaporator temperature to determine if the A/C system has adequate refrigerant (R134a) charge. The PCM will disable the A/C clutch whenever the refrigerant charge drops below a predetermined value, to reduce the chance of compressor damage. The PCM will cycle the compressor more frequently if the charge is only slightly low......
DTC 61 Will Set When: The PCM calculates refrigerant charge to be below a predetermined level.
Action Taken (PCM will default to): If the PCM determines A/C refrigerant charge to be low, the A/C clutch will be disabled and DTC 61 will be set. DTC 61 will be stored in the PCM memory, but will not turn "ON" the Malfunction Indicator Lamp (MIL).
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