2JZGTE guys, does your A/C work? Parts I. and II.
05-28-07, 01:29 PM
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2JZGTE guys, does your A/C work? Parts I. and II.
I am trying to figure out where to start on this whole problem. The clutch is not engaging on the compressor, but the lines hold pressure very well. So I am assuming it's in the wiring somewhere. Can anyone lend advice as to where to start looking?
I am gonna dig into the FSM's, but if someone else has a quick fix that would be great.
I am gonna dig into the FSM's, but if someone else has a quick fix that would be great.
05-28-07, 01:39 PM
#2
The compressor will not turn on if the refrigerant is low because the "low pressure safety switch" prevents the compressor clutch from engaging if system pressure is low. This protects the compressor from possible damage caused by a lack of lubrication.
One of the first things you should check is compressor engagement. If the compressors magnetic clutch is not engaging when the A/C is turned on, the problem may be a blown fuse or a wiring problem.
If the fuse is blown, replacing it may restore cooling temporarily. But the underlying reason for the fuse blowing in the first place needs to be identified and corrected to prevent the same thing from happening again.
If the magnetic clutch is receiving voltage but is not engaging the compressor, the clutch is defective and needs to be replaced. If there is any evidence of leakage around the compressor shaft seal, the seal should also be replaced.
If the clutch works but fails to turn the compressor (the belt may squeal in protest!), the compressor has seized and needs to be replaced.
One of the first things you should check is compressor engagement. If the compressors magnetic clutch is not engaging when the A/C is turned on, the problem may be a blown fuse or a wiring problem.
If the fuse is blown, replacing it may restore cooling temporarily. But the underlying reason for the fuse blowing in the first place needs to be identified and corrected to prevent the same thing from happening again.
If the magnetic clutch is receiving voltage but is not engaging the compressor, the clutch is defective and needs to be replaced. If there is any evidence of leakage around the compressor shaft seal, the seal should also be replaced.
If the clutch works but fails to turn the compressor (the belt may squeal in protest!), the compressor has seized and needs to be replaced.
05-28-07, 02:23 PM
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The compressor will not turn on if the refrigerant is low because the "low pressure safety switch" prevents the compressor clutch from engaging if system pressure is low. This protects the compressor from possible damage caused by a lack of lubrication.
One of the first things you should check is compressor engagement. If the compressors magnetic clutch is not engaging when the A/C is turned on, the problem may be a blown fuse or a wiring problem.
If the fuse is blown, replacing it may restore cooling temporarily. But the underlying reason for the fuse blowing in the first place needs to be identified and corrected to prevent the same thing from happening again.
If the magnetic clutch is receiving voltage but is not engaging the compressor, the clutch is defective and needs to be replaced. If there is any evidence of leakage around the compressor shaft seal, the seal should also be replaced.
If the clutch works but fails to turn the compressor (the belt may squeal in protest!), the compressor has seized and needs to be replaced.
One of the first things you should check is compressor engagement. If the compressors magnetic clutch is not engaging when the A/C is turned on, the problem may be a blown fuse or a wiring problem.
If the fuse is blown, replacing it may restore cooling temporarily. But the underlying reason for the fuse blowing in the first place needs to be identified and corrected to prevent the same thing from happening again.
If the magnetic clutch is receiving voltage but is not engaging the compressor, the clutch is defective and needs to be replaced. If there is any evidence of leakage around the compressor shaft seal, the seal should also be replaced.
If the clutch works but fails to turn the compressor (the belt may squeal in protest!), the compressor has seized and needs to be replaced.
06-23-07, 02:08 PM
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2JZGTE - A/C Wiring Question...Part 2
Can anyone tell me what actually needs to be rewired in regards to the A/C Magnetic Clutch and A/C Climate Control?
Do all of these have to be rewired from the individual 2JZGTE sensors to the SC300 climate control???
A/C Ambient Temp Sensor
A/C Lock Sensor
Engine Coolant Temp Sensor (A/C System)
A/C Solar Sensor
A/C Evap Temp Sensor
Do all of these have to be rewired from the individual 2JZGTE sensors to the SC300 climate control???
A/C Ambient Temp Sensor
A/C Lock Sensor
Engine Coolant Temp Sensor (A/C System)
A/C Solar Sensor
A/C Evap Temp Sensor
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06-26-07, 04:45 PM
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06-27-07, 02:28 PM
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If EWD = Wiring Diagram...I have that for the 94 Supra, 97 Supra, and 97 SC300. It's just a matter of chasing down all the wires and figuring out which sensors should be checked first, checking for the easiest fixes before digging further.
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