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

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

Normal Operation
Under normal operation, the electronic automatic temperature control (EATC) module is provided vacuum from the engine. When a mode is selected, vacuum is applied to the desired vacuum control motor that is connected to the mode door you want to control.

This pinpoint test is intended to diagnose the following:
- EATC module
- Heater control valve
- Vacuum control motor
- Stuck or bound linkage or door
- Leaking or plugged vacuum hose

G1-G4:

G4-G6:

G7-G8:

G9-G10:

G11-G14:

G14-G15:

G16-G17: