Low Fuel Warning Light - Intermittent False Activation

91ford25

Article No.
91-19-7

09/18/91


WARNING LIGHT - "LOW FUEL" INDICATOR - INTERMITTENT FALSE ACTIVATION AT ABOUT ONE HALF FUEL LEVEL - VEHICLES WITH SPORT INSTRUMENT CLUSTER (CONVENTIONAL) AND VEHICLE MAINTENANCE MONITOR


FORD: 1991 THUNDERBIRD

LINCOLN-MERCURY: 1991 COUGAR


ISSUE: A false "Low Fuel" warning may occur intermittently at about 1/2 fuel level. This is caused by an incorrect wire connection to the VMM (Vehicle Maintenance Monitor) only on vehicles equipped with the "Sport Cluster" option.

ACTION: Modify the EIC (Electronic Instrument Cluster) sense ground circuit # 57 as indicated in the following service procedure.


NOTE: THIS CONCERN WILL NOT CAUSE DAMAGE TO THE VEHICLE MAINTENANCE MONITOR. THE VMM WILL RESUME NORMAL OPERATION AFTER THE CONCERN IS CORRECTED.

1. Remove the VMM from the vehicle. Refer to the 1991 Thunderbird/Cougar Shop Manual, Section 33-38, for removal procedure.


2. Remove the EIC Sense Ground Circuit # 57 (BLK) from PIN # 6 of the VMM connector.

3. Tape the EIC Sense wire to the wiring harness.

4. Connect and install the VMM in the instrument panel.

5. Confirm proper operation.

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under Basic Warranty
Coverage
OPERATION DESCRIPTION TIME
911907A Repair VMM Ground 0.5 Hr.
DEALER CODING
BASIC PART NO. CONDITION CODE
14401 09
OASIS CODES: 206000, 404000