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

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

Normal Operation
The smart junction box (SJB) supplies a pulse-width modulated (PWM) voltage signal to the dimmable illumination sources on circuit VLN04 (VT/GY) (Edge) and VLN37 (BU/WH) (MKX).

- DTC B2A32 (LED Backlighting Output Circuit Open) - is an on-demand DTC that sets when the SJB detects a short to voltage on the LED backlighting output circuit.
- DTC B29B7 (White Lighting Output Circuit Open) - is an on-demand DTC that sets when the SJB detects a short to voltage on the white lighting output circuit.

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

B1-B3: