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

Cabin Temperature Sensor / Switch: Testing and Inspection

Depressing the ``Diagnostic'' key pad switch will reveal any stored diagnostic codes concerning condition of both the in-car and ambient air temperature sensors. A ``00'' code displayed indicates that there are no identifiable sensor or air mixture valve problems.