- 5540BA DIPPED BEAM CIRCUIT CHECK
- 5540BJ CHECK IGNITION-OPERATED HEADLAMP POWER SUPPLY
- 5540BK CHECK THE CONTINUITY OF THE LOW BEAM WIRING INSIDE THE HEADLAMP
- 5540BL BIDIRECTIONAL SERIAL LINE CHECK
- 5540BM CHECK THE HEADLAMP ALIGNMENT MOTOR SUPPLY WIRING
- 5540BN SPEED SIGNAL CHECK
- 5540BO CHECK THE SPEED SIGNAL WIRING CONTINUITY INSIDE THE MASTER HEADLAMP
- 5540BP CHECK THE HEADLAMP HIGH BEAM FUNCTION CONTROL COIL SUPPLY WIRING