Diagnostic Trouble Code Tests and Associated Procedures
EATC CONTROL MODULE ERROR CODES01 (Code displayed during diagnostic procedures)
Possible Source(s):
- Damaged control assembly.
Action(s) to Take:
- Replace EATC Control Assembly.
02 (Code displayed during diagnostic procedures)
Possible Source(s):
- A/C air temperature control door damaged or inoperative.
Action(s) to Take:
- Refer to Pinpoint Test B. B: EATC Blend Door Actuator Functional Test
03 (Code displayed during diagnostic procedures)
Possible Source(s):
- Automatic temperature control sensor open or short.
Action(s) to Take:
- Refer to Automatic Temperature Control Sensor Diagnosis. ATC Sensor Diagnosis
04 (Code displayed during diagnostic procedures)
Possible Source(s):
- A/C ambient air temperature sensor and bracket open or short.
Action(s) to Take:
- Refer to A/C Ambient Air Temperature Sensor Diagnosis. A/C Ambient Air Temperature Sensor Diagnosis
05 (Code displayed during diagnostic procedures)
Possible Source(s):
- A/C sunload sensor short.
Action(s) to Take:
- Refer to A/C Sunload Sensor Diagnosis. A/C Sunload Sensor Diagnosis
888 (Code displayed during diagnostic procedures)
Possible Source(s):
- Temperature control lockout valve and switch inoperative.
- Vacuum System inoperative.
- A/C clutch inoperative or damaged.
Action(s) to Take:
- Refer to Pinpoint Test A. A: EATC System Inoperative, Intermittent, or Improper Operation