VIDEO

Informace

GMC

GMC C123

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 C123

Basic error definition

F-CAN Malfunction (Powertrain Control Module (PCM)-ABS)

Cause of DTC

With the ignition switch ON for at least 3 seconds and battery voltage at a minimum of 10.0 V, one of the following conditions must be met. Condition 1: The PCM does not receive any signals via the F-CAN lines for at least 1 second. Condition 2: The information sent from the ABS modulator-control unit is abnormal at least 20 times.