96 Neon A/C electrical problem
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Joined: Apr 2006
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96 Neon A/C electrical problem
The A/C in my 96 Neon quit working. The problem is electrical in nature as the local repair shop
confirmed there's sufficient refrigerant in the system, but no power at the compressor. I would've
let them have a crack at troubleshooting the problem, but they wanted me to make another
appointment, so I figured I'd have at it myself first. I finally got my hands on the shop manual A/C
schematic to help shed some light on the problem, but so far have not gotten to the root of it.
Given my novice knowledge of electrical troubleshooting, I traced back from the compressor to the
A/C electronic cycling switch. It's at that point where I don't have power on the line coming in from
the A/C heater blower switch (see attachment- line C2 22DB YL* @ connector C403) . I then
tested the output on the A/C heater blower switch for that line and had no power on that lead with
the car running and the switch on any of the A/C settings or with the defrost on. I then placed a
jumper on the cycling switch connector between the line from the heater blower switch and lead
coming from the fuseblock (see attachment- line F20 22WT @ connector C403) . Once I did that,
Ihad power on the line between the cycling switch and the low pressure cutout switch.
At that point I surmised the heater blower switch was faulty and went to the junkyard for a
replacement. Problem now is the replacement switch doesn't have power on that lead either.
Before I delve any further into this problem, I'd like to ask those of you more knowledgeable
on this type of problem the following:
1) Am I reading the schematic correctly? Should there be power on the line from the heater blower
switch to the cycling switch when the car is running and the heater blower switch is on any of the
A/C settings or on defrost? Perhaps I picked out another faulty heater blower switch, but I'd like to
know for sure there's supposed to be power on that lead before I go back to the junkyard for another
one. I've gone to three different Chrysler service centers and haven't gotten a definitive answer to
my question from any of them!
2) Has anyone else had an electrical issue with their A/C? Is there a known issue with one of the
A/C electrical components?
Thanks in advance for any light you can shed on this for me.
Randy
confirmed there's sufficient refrigerant in the system, but no power at the compressor. I would've
let them have a crack at troubleshooting the problem, but they wanted me to make another
appointment, so I figured I'd have at it myself first. I finally got my hands on the shop manual A/C
schematic to help shed some light on the problem, but so far have not gotten to the root of it.
Given my novice knowledge of electrical troubleshooting, I traced back from the compressor to the
A/C electronic cycling switch. It's at that point where I don't have power on the line coming in from
the A/C heater blower switch (see attachment- line C2 22DB YL* @ connector C403) . I then
tested the output on the A/C heater blower switch for that line and had no power on that lead with
the car running and the switch on any of the A/C settings or with the defrost on. I then placed a
jumper on the cycling switch connector between the line from the heater blower switch and lead
coming from the fuseblock (see attachment- line F20 22WT @ connector C403) . Once I did that,
Ihad power on the line between the cycling switch and the low pressure cutout switch.
At that point I surmised the heater blower switch was faulty and went to the junkyard for a
replacement. Problem now is the replacement switch doesn't have power on that lead either.
Before I delve any further into this problem, I'd like to ask those of you more knowledgeable
on this type of problem the following:
1) Am I reading the schematic correctly? Should there be power on the line from the heater blower
switch to the cycling switch when the car is running and the heater blower switch is on any of the
A/C settings or on defrost? Perhaps I picked out another faulty heater blower switch, but I'd like to
know for sure there's supposed to be power on that lead before I go back to the junkyard for another
one. I've gone to three different Chrysler service centers and haven't gotten a definitive answer to
my question from any of them!
2) Has anyone else had an electrical issue with their A/C? Is there a known issue with one of the
A/C electrical components?
Thanks in advance for any light you can shed on this for me.
Randy
Thread Starter
Joined: Apr 2006
Posts: 2
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RE: 96 Neon A/C electrical problem
Here's the rest of the schematic showing the line coming out of the A/C heater blower switch and into the A/C electronic cycling switch shown on the first attachment (C2 22DB YL*).
