Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 375 of 610 Copyright by TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without our consent P0533-00: AC Refrigerant Pressure Sensor A Circuit High Overview: DTC Description as per ISO Standard AC refrigerant Pressure Sensor A Circuit Low ECU Pin Number A55,A07,A14 Customer Symptom AC will not function Fault Effects (On Vehicle) AC Compressor will not be engaged by EMS Lamp Status (If Any) Fault Detection Condition This fault gets logged if the AC pressure sensed by EMS ecu is greater than 30 bar. Normal Operating Condition AC refrigerant pressure will be in the range of 2 to 30 bar. Probable Trouble Area Wiring harness connections between EMS and AC pressure sensor, EMS ECU. Healing Condition Clear the errors, Ignition OFF to ON, engine idle, fly-up and specially vehicle running in different speed condition Component Details: The air conditioning system is pressurized with a gas known as a refrigerant. The refrigerant flows through the lines in the air conditioning system to remove heat and moisture from the interior of your vehicle. It circulates it through the condenser, which disperses the heat into the air. The refrigerant is pressurized in the air conditioning system to operate properly, and it is monitored by the refrigerant pressure sensor. Based on the AC refrigerant pressure, EMS controls the AC Compressor and Cooling Fans. Preliminary Checks: Check whether the customer voice / view about the issue is matching with the fault effects mentioned above. If yes, go ahead with next steps. If not, check for other DTC’s presence. Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to earlier issue closure. AC Pressure Sensor / its connector damaged? If so, rectify / replace Loose/ Damaged Connections between AC Pressure Sensor and EMS ECU. Check for back out of pins at both AC Pressure Sensor connector and ECU connector. Check for damage of pins at both AC Pressure sensor connector and ECU connector.
RkJQdWJsaXNoZXIy MTIwNTUz