VIDEO

Informace

Hummer

Hummer B2476

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

Hummer B2476

Basic error definition

Mass Airflow Sensor Circuit Continuity Monitoring (short circuit)

Cause of DTC

This diagnostic function monitors for circuit continuity malfunction by comparing the MAF sensor signal period duration to the upper calibrated threshold value and to the lower calibrated threshold value to detect an intermitted contact. A short circuit malfunction is detected when the period duration equals 0. When the MAF sensor signal period duration equals 0 for a calibrated period of time, a short circuit malfunction is detected and an the DTC P0100 set.