Green light indicates PWM test. Tests fuel injectors (12V for gasoline vehicles, 12V and 24V for diesel vehicles). Tests ignition coils (independent ignition, coil type, and module type). Yellow light indicates ignition coil test.
12V Ignition Coil Tester & PWM Signal Generator for Automotive Actuator Testing
Ignition Coil Detector Tester Natural Gas 24V Gasoline 12V Ignition Coil Test
