Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

A/C Signal: Testing and Inspection

TROUBLESHOOTING HINTS
If the compressor magnet clutch is not activated when the air conditioning switch is turned ON during idling, faulty air conditioning control system is suspected.

A/C COMPRESSOR CLUTCH HARNESS INSPECTION

A/C Compressor Clutch Relay:






INSPECTION USING SCAN TOOL

A/C Switch:





A/C Switch State

A/C Compressor Clutch Relay:





A/C Compressor Clutch Relay State