VIDEO

Informace

Chevrolet

Chevrolet P11B2

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

Chevrolet P11B2

Basic error definition

ABS Main Relay 1 Open

Cause of DTC

When either of the following is detected: 1. Relay contact is off (BS1 terminal is less than 3.5 V) for at least 0.2 seconds when R1+ terminal voltage is 9.0 V or more and ABS relay No.1 is on. 2. R1+ terminal voltage is less than 9.0 V and No.1 relay cannot be on for at least 0.2 seconds when ABS relay No.1 is turned on (BS1 terminal is 3.5 V or more).