Test E: No Communication With The Electronic Automatic Temperature Control (EATC) Module

PINPOINT TEST E: NO COMMUNICATION WITH THE ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC) MODULE

E1-E2:

Normal Operation
Under normal operation, the EATC module receives a ground through circuit 1203 (BK/LB). The EATC module is supplied constant battery voltage through circuit 1001 (WH/YE) and ignition switched voltage through circuit 1003 (GY/YE).

Possible Causes
- An open in circuit 1203 (BK/LB), 1001 (WH/YE) or 1003 (GY/YE).
- EATC module.