Dual Led System: Notes

Self-diagnostic system can be operated in any of 5 modes. Modes are manually changed using screwdriver through access port on ECM. With screwdriver turned fully clockwise, inspection lights will begin to flash. Count number of flashes. First flash is Mode I, second flash is Mode II, etc. When desired mode has been indicated, turn screwdriver fully counterclockwise. In different modes, Red LED and Green LED perform different functions.