Electronic Fuel Control System - System and Diagnostics

87ford25

Article No. 87-25-6
ELECTRONIC FUEL CONTROL SYSTEM (EFCS) - REVISED SYSTEM AND DIAGNOSTICS - VEHICLES BUILT AFTER 11/01/87
LINCOLN-MERCURY: 1988 TRACER


ISSUE: The Electronic Fuel Control System (EFCS) on 1988 Tracers built after 11/01/87 has been changed to include a new "idle up" system that uses a single idle up solenoid. This single idle up solenoid replaces the air bypass valve that was used for initial cold start-up and the three (3) original idle up solenoids. These changes also affect the processor pin locations. A new breakout box adapter, Rotunda No. 007-00038, will be available in April, 1988 to assist technicians in diagnosing system concerns.

FIGURE 5 - EFCS BREAKOUT BOX PIN TO PROCESSOR PIN CONVERSION CHART - TRACER BUILT AFTER 11/01/87:

ACTION: If service is required prior to the availability of the new breakout box adapter, refer to the EFCS breakout box pin to processor pin conversion chart below, Figure 5.

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"