2003 Bounder Dash A/C Switch Problems (?)
Have 2003 Bounder 35 E on workhorse chassis. Dash A/C does not work. Have had two shops do detail trouble shooting and both think, not know the answer. At this point the problem is that the com...
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To Test the dash switch... You need, a 12 volt light and socket.
Step 1, Find the leads to the switch, Using either a test lamp or a voltmeter find the HOT lead. (The one that is live when the engine is running even if the switch is set to OFF)
now find the line to the refrigerant compressor clutch (likely to the computer)
Hook your lamp to this line and ground. (or better yet, hook two identical lamps, one to hot, one to this lead.
With the switch in the AC position there should be no noticable difference in teh lamps.
If one is bright, the other very dim or not lit.. Bad switch
Step 1, Find the leads to the switch, Using either a test lamp or a voltmeter find the HOT lead. (The one that is live when the engine is running even if the switch is set to OFF)
now find the line to the refrigerant compressor clutch (likely to the computer)
Hook your lamp to this line and ground. (or better yet, hook two identical lamps, one to hot, one to this lead.
With the switch in the AC position there should be no noticable difference in teh lamps.
If one is bright, the other very dim or not lit.. Bad switch
