Ranger 4WD V6-3.0L VIN U (1997)
General Module: Flow of Diagnosis
Inspection and Verification
The Generic Electronic Module (GEM) diagnostic system is composed of the New Generation STAR (NGS) tester, the GEM and all GEM-associated
components. They allow you to determine if a GEM subsystem has a fault and provides the capability to isolate the fault.
NOTE: This diagnostic information contains only on-demand self-test and functional test procedures for the GEM and GEM-related subsystems and
power and ground concern isolation pinpoint tests. Refer to the testing for the affected system for GEM subsystem diagnostic procedures.
