VIDEO

Informace

Cadillac

Cadillac P183

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

Cadillac P183

Basic error definition

Oil Pressure Pump Performance. General Electrical Failures. Circuit Current Below Threshold

Cause of DTC

The Differential electronic module (DEM) checks the performance of the oil pressure pump. The control module compares the signal from the oil pump to the predefined parameters. The current that goes through the oil pressure pump is dependent on the temperature of the oil. The diagnostic trouble code (DTC) is stored if the control module detects that: The amperage through the oil pressure pump is too low. Incorrect value has been registered at 30 on each following operating cycle. The control modules test for the diagnostic trouble code (DTC) starts when: The oil temperature is above 0 °C. The voltage across the oil pressure pump is greater than 11.5 V. Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.