2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 461

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 461

DTC Descriptors

DTC B1395 03

- Device Voltage Reference Output 1 Circuit Voltage Below Threshold

DTC B1395 07

- Device Voltage Reference Output 1 Circuit Voltage Above Threshold

Diagnostic Fault Information

Circuit/System Description

Voltage for the interior backlighting components and stop lamp switch activation signal is supplied from the body control module (BCM). The

BCM applies a voltage reference through the instrument panel (I/P) dimming voltage reference circuit to the interior lamp dimming switch, which is

part of the headlamp switch. When the dimming switch is placed in the desired position, the dimmed voltage setting is applied from the interior

lamp dimming switch through the I/P dimming control circuit to the BCM. The BCM then applies the dimmed voltage to the I/P lamps supply

voltage circuit and they dim to the correct level.

The stop lamp switch is also supplied voltage on the same circuit for a stop lamp OFF signal to the BCM. When the stop lamp switch is activated

the voltage signal circuit to the BCM is opened prompting the BCM to illuminate the stop lamps.

Conditions for Running the DTC

* Battery voltage must be between 9-16 V.

* Ignition must be ON.