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

Test H: Incorrect/Erratic Direction Of Airflow From Outlets - EATC

PINPOINT TEST H: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS - EATC


H1:






H2-H4:






H4-H6:






H7-H8:






H9-H10:






H11-H14:






H14-H15:






H16-H17:






Normal Operation
Under normal operation, the function selector switch is provided vacuum from the engine. When a position is selected, vacuum is applied to the desired vacuum control motor that is connected to the mode door you want to control.

Possible Causes
- Remote climate control (RCC) module
- Integrated control panel (ICP)
- Vacuum control motor
- Stuck or bound linkage or door
- Leaking or plugged vacuum hose