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

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

H1-H9:

H10-H13:

H14:

Normal Operation
Under normal operation, the electronic automatic temperature control (EATC) or dual automatic temperature control (DATC) module receives a ground through circuit GD116 (BK/VT). The EATC module is supplied constant battery voltage through circuit SBP07 (WH/RD) and ignition switched voltage through circuit CBP20 (YE/VT).

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

Possible Causes
- Fuse(s)
- An open in circuit GD116 (BK/VT), SBP07 (WH/RD) or CBP20 (YE/VT)
- DATC/EATC module