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 Request Signal
This signal tells the
PCM when the NC mode is selected at the NC control head. The PCM uses this to adjust the
idle speed before turning on the NC clutch. The NC compressor will be inoperative if this signal is not available to the PCM.
Refer to A/C Clutch Circuit Diagnosis for NC wiring diagrams and diagnosis for A/C electrical system.