VIDEO

Informace

Chrysler

Chrysler U11BB

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

Chrysler U11BB

Basic error definition

Exhaust Gas Recirculation Temperature Sensor A Circuit Range-Performance

Cause of DTC

The EGR Valve Assembly contains an electric DC motor and gear box. An eccentric drive translates the gearbox output from a rotating motion (DC motor) to a linear stroke (output shaft). An internal return spring ensures that the valve returns back to its closed position as a fail safe.During initial opening of the EGR Valve, the PCM drives the PWM voltage high resulting in a high current draw. After the valve is fully opened the PCM voltage is reduced to maintain the EGR Valve position. This reduces the current draw and protects the DC motor from overheating.The PCM also applies a current in the closing direction to fulfill the required dynamic performance. This is done to slow down the closing speed of the shaft near the stop. This ensures that the valve does not close too fast causing the valve disk to be forced into the stop harshly which may damage the internal gearbox.