Electronic Automatic Temperature Control - Revision

Article No.
91-11B-9



June 14, 1991



SHOP MANUAL - 1991 - SECTION 36-75 - ELECTRONIC AUTOMATIC TEMPERATURE CONTROL - REVISED SERVICE INFORMATION



FORD:
1991 THUNDERBIRD

LINCOLN-MERCURY:
1991 COUGAR



ISSUE:
The Electronic Automatic Temperature Control Section 36-75 of the 1991 Thunderbird/Cougar Shop Manual has been revised to provide more complete and detailed Operation and Diagnosis information.

ACTION:
Refer to the pages in this TSB article for the revised Section 36-75.



OTHER APPLICABLE ARTICLES:
NONE

WARRANTY STATUS:
INFORMATION ONLY

OASIS CODES:
290000









^ INDEX
























^ DESCRIPTION AND OPERATION



^ DIAGNOSIS AND TESTING






WIRING DIAGRAM






SELF TEST AND ERROR CODES






CONNECTOR PIN-OUTS










EATC SYSTEM FUNCTIONAL TEST A1 THRU A11









DIAGNOSIS WHEN SELF TEST INDICATES NO ERRORS












SENSOR DIAGNOSIS









BLOWER CIRCUIT TEST






BLOWER SPEED CONTROLLER DIAGNOSIS









COLD ENGINE BLOWER LOCKOUT SWITCH DIAGNOSIS AND BLEND DOOR ACTUATOR DIAGNOSIS









ELECTRO VACUUM SOLENOID DIAGNOSIS AND VACUUM SYSTEM DIAGNOSIS






^ EATC SYSTEM VACUUM SCHEMATIC AND SELECTOR TEST



^ REMOVAL AND INSTALLATION PROCEDURES












CONTROL ASSEMBLY, BULB AND HEATER CORE












MUFFLER, SPEED CONTROLLER, BLOWER MOTOR















TEMPERATURE SENSOR, ELECTRO VACUUM SOLENOID, BLEND DOOR MOTOR












COLD ENGINE LOCKOUT (CELO)