VIDEO

Informace

GMC

GMC U1882

See the basic definition of a diagnostic error. This will help you to clarify the main causes of the fault code. You will understand the program of the control unit
Basic DTC analysis according to OBD2 protocol standard.

OBD2 or On-Board Diagnostics displays messages for basic group styles. More comprehensible code composition has been standard since 2000. The DTC code consists of five characters and its composition will be shown in this video

Insight into programming

The basic unit for the operation of any computer is the bit. Logic 0 and 1 are expressed by a single bit. Diagnostics The error code is composed of 16 bits. The first two bits define one of the four basic circuits. The video will show you a comprehensive overview of the composition of the error report

A diagnostically understandable description of the Diagnostic Trouble Code

GMC U1882

Basic error definition

Combined Rear Right Light 1-Circuit Current Below Threshold

Cause of DTC

When the Stop Lamp Switch is activated, a hardwired brake signal is sent to the Body Control Module (BCM). When the BCM receives this brake signal, indicating the Brake Pedal is applied, the BCM sends a voltage output through the Stop Lamp Driver circuit and Brake Signal 2 circuit to the Left and Rear Tail Lamps and Center High Mounted Stop Lamp (CHMSL), which illuminates the Stop Lamps. A separate ground circuit for the Left and Rear Tail Lamps and CHMSL is provided through the wiring harness and is attached to the body sheet metal.