Normal Operation

The Smart Junction Box (SJB) then supplies a Pulse Width Modulated (PWM) voltage signal to the dimmable illumination sources on circuit VLN04 (VT/GY).

• DTC B2A32 (LED Backlighting Output Circuit Open) - an on-demand DTC that sets when the SJB detects a short to voltage on the LED backlighting output circuit.

This pinpoint test is intended to diagnose the following: 

• Wiring, terminals or connectors
• SJB