Test I: The EATC System Is Inoperative, Intermittent or Incorrect Operation

PINPOINT TEST I: THE EATC SYSTEM IS INOPERATIVE, INTERMITTENT OR INCORRECT OPERATION

I1-I6:

I7-I13:

I13-I14:

Normal Operation
Under normal operation, the electronic automatic temperature control (EATC) module receives a ground through circuit GD133 (BK). The EATC module is supplied constant battery voltage through circuit SBP15 (WH/RD) and ignition switched voltage through circuit CBP37 (WH).

NOTE: For a complete explanation of the EATC system functions, refer to Description and Operation.

Possible Causes
- Fuse(s)
- An open in circuit GD133 (BK), SBP15 (WH/RD) or CBP37 (WH)
- EATC module