Test H: No Communication With The Electronic Automatic Temperature Control Module

PINPOINT TEST H: NO COMMUNICATION WITH THE ELECTRONIC AUTOMATIC TEMPERATURE CONTROL MODULE

H1-H3:

H3 Continued:

Normal Operation
Under normal operation, the electronic automatic temperature control (EATC) module is grounded through circuit 57 (BK). The EATC module receives battery voltage through circuit 1566 (RD/YE) and ignition voltage through circuit 1812 (BN/WH).

Possible Causes
- Fuse(s)
- An open in circuit 57 (BK), 1566 (RD/YE) or 1812 (BN/WH)