Test D: The Control Illumination Is Always On - All Hardwired Illumination

PINPOINT TEST D: THE CONTROL ILLUMINATION IS ALWAYS ON - ALL HARDWIRED ILLUMINATION

Normal Operation
With the parking lamps or headlamps on, the smart junction box (SJB) supplies a pulse width modulated (PWM) voltage signal to the dimmable illumination sources on circuit VLN04 (VT/GY) or CLN04 (BU/BN) (Fusion, Milan only).

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- SJB

D1:

D2-D3: