XK8 / XKR ( X100 ) 1996 - 2006

A/C Compressor Engagement Failure Troubleshooting

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  #1  
Old 06-19-2023, 02:05 PM
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Default A/C Compressor Engagement Failure Troubleshooting

RE: 2000 XKR
My A/C compressor is not engaging with car running when the A/C switch is pressed.

Checked the 10A fuses- O.K. Did NOT check the A/C Compressor Clutch relay... how does one check a relay?

Would a low refrigerant (pressure) be indicated in preventing the compressor activation?

What would the simplistic troubleshooting hierarchy of steps be?
  • IF fuse(s) OK ->
  • Check relay?
Thanks for the advice...

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Old 06-19-2023, 02:55 PM
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To me he simplest test would be to measure the pressure in the A/C system with the engine running and A/C set to cold and fan on high. Several auto parts stores will loan the test gauges, which come with instructions. Odds are pretty good the system pressure is too low and the clutch will not engage.
 
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