VIDEO

Informace

Fiat

Fiat U193C

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

Fiat U193C

Basic error definition

Stop (brake) Lamp Switch. Faulty Signal

Cause of DTC

The stop (brake) light switch informs the control module that braking is in progress. The control module terminal is grounded via the stop (brake) lamp bulbs when the stop (brake) lamp switch is not activated. The control module (and bulbs) are supplied with battery voltage supply when the stop (brake) light switch is activated. Diagnostic trouble code (DTC) ABS-142 is stored if the control module registers that the signal is too high (high voltage) continuously for 15 minutes. Diagnostic trouble code (DTC) ABS-142 is also stored if the control module registers that the signal ground via the light bulbs ceases when the stop (brake) lamp switch is unaffected for 15 minutes. NOTE: Consequently the diagnostic trouble code (DTC) can be stored if the brake pedal is depressed for more than 15 minutes with the ignition on. Fault causes of this type are not included in the fault-tracing procedure.