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 E: Air Inlet Door Is Inoperative

PINPOINT TEST E: AIR INLET DOOR IS INOPERATIVE

Normal Operation
Under normal operation, to rotate the air inlet door actuator, the HVAC module supplies voltage to the air inlet door actuator motor through circuit CH208 (GN/OG), and supplies ground through circuit CH207 (BU/GY). To reverse the air inlet door actuator rotation, the HVAC module reverses the voltage and ground circuits.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Air inlet door actuator motor
- HVAC module - EATC
- HVAC module - DATC
- HVAC module - EMTC
- Stuck or bound linkage or door


E1:






E1-E2:






E2-E3:






E3-E4:






E4-E5:






E5-E7: