DTC Jeep U103C Short Explanation
Channel: Maxidot Jeep
Date: 2020-08-07

The video focuses on the basic Jeep specific diagnostic error code.
Contents:
0:21 Basic DTC analysis according to OBD2 protocol standard.
1:48 Insight into programming
- an explanation of what a bit is and how a byte is formed
- decoding the Error Code to the base programming
2:58 A diagnostically understandable description of the Diagnostic Trouble Code
3:05 Basic error definition
- Possible causes or errors of the car and its parts describing the mentioned error

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Make:
Jeep
Code:
U103C
Definition:
A or C Control Circuit High
Description:
The Powertrain Control Module (PCM) receives a signal requesting the A or C Compressor to be turned on from the HVAC. When the PCM receives this request it energizes the A or C Clutch Relay through a Low Side Driver. The Powertrain Control Module (PCM) receives feedback from the A or C Pressure Transducer to monitor the pressure in the high side of the A or C refrigerant system. The A or C Pressure Transducer connects to a fitting on the A or C discharge line and its internal resistance changes in response to the pressure in the system. The PCM is programmed to respond to this and other sensor inputs to control the operation of the A or C Clutch and the Radiator Cooling Fan to help optimize A or C system performance and to protect the A or C system components from damage. The PCM will not allow the A or C Clutch Relay to be energized when the A or C Pressure Transducer reading is too low or excessively high. When the refrigerant pressure rises above a calibrated pressure specific to the PCM, the PCM will actuate the cooling fan.
Cause:
A or C CLUTCH CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGEA or C CLUTCH RELAYPCM