Can a refrigerant be added to an Elantra?
Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The A/C system in your Elantra consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.
How do you test the EVAP system monitor?
TEST PROCEDURE 1. Connect the Scan Tool to the data link connector (DLC). Use the Scan Tool to clear any stored DTC’s and to reset the Onboard Diagnostic Monitors. Bring up the Readiness Code for the EVAP System Monitor. 2. Start the engine (cold); IAT PID from 40-100ºF (this step requires a key “off” period of at least 8 hours). 3.
How to check the readiness code for the EVAP system?
4. On the scan tool or code reader with the readiness monitor feature, check the status of the readiness code for the EVAP System Monitor. The Readiness code should change to YES when the test is done. If it does, return home turn off the ignition key.
When does EVAP turn off the ignition switch?
EVAP SYSTEM MONITOR DRIVE CYCLE INSTRUCTIONS Do not turn off the ignition switch during the test procedure. All Onboard Diagnostic Monitors are cleared when the battery is disconnected or when the Powertrain Control Module (PCM) is cleared with the Scan Tool.
How does Hyundai Elantra evaporative emission system work?
It closes off the air inlet to the canister for the Evaporative Emissions System leak detection inspection function and also prevents fuel vapors from escaping from the Canister when the vehicle is not operating. The Fuel Tank Pressure Sensor (FTPS) is an integral part of the monitoring system.
What are the enabling criteria for the EVAP drive cycle?
An example of some common enabling criteria to run the EVAP monitors drive cycle: The malfunction indicator lamp (MIL) must be off Barometric pressure exceeds 75 Kpa At start-up, IAT and ECT is between 45°F and 85°F
How does the FTPS work on a Hyundai Elantra?
The FTPS. checks Purge Control Solenoid Valve (PCSV) operation and leaks in the Evaporative Emission Control System by monitoring pressure and vacuum level in the fuel tank during PCSV operating cycles. A ratchet tightening device on the threaded fuel filler cap reduces the chances of incorrect installation, which would seal the fuel filler.
How does the OBD-II system work in a Hyundai Elantra?
At first, the OBD-II system checks if vapor generation due to fuel temperature is small enough to start monitoring, and then it evacuates the evaporative system by means of PCSV with ramp in order to maintain a certain vacuum level. The final step is to check if there is vacuum loss by any leakage of the system.