how to wire ac compressor clutch relay

Unplug any relay terminal wiring with the interior car A/C controls in the "off" position. Tags: ac clutch relay , ac compressor relay , ac relay , clutch coil relay , compressor relay Touch the positive terminal to see if the test light is working correctly. It will supply the battery voltage to the compressor clutch, allowing it to engage manually. Make a small 6-inch jumper wire and strip both ends. Facts and Fallacies! Inadequate lubrication can damage the compressor. Checking an A/C clutch relay is a process of eliminating possible connection failures. ;�\~|pp��N���QMڙ(LJ5�h��fRFx73Y����C��7^���: %PDF-1.4 Changing the compressor clutch could be the only solution in this case. Unplug the single wire connector on the front side of the compressor. "}z]!�j@��Q2M��6�p�tKWu�ƎAR���{�p���@8oD'71��Kz���cN��9~zA7B��/��1�D�/�}5s�X4:����O���5H��ᕇ���C([�h��8� ��=�Շ�C({ZA`�2���.�;��b_�,r ���e�U��4J2�q�1��+8=�_���K 9��­LXo�� ��%C2�. Before starting the next step of diagnosis, you should know that a low-pressure switch can create problems with the compressor clutch’s relay in some car models. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, Porsche 928 Maintenance Tips and Repairs. What is the most common reason for an air conditioning compressor not to engage? %�쏢 There are a couple of ways you can fix the problem to bring back the air conditioning system in order. The wire from the controls should show "hot," but not the ground or the A/C compressor feed. The Answer. A delay can cause serious damage to the air conditioning system and the engine. Locate the air conditioner clutch relay by tracing the wire connection from the air conditioner compressor plug-in to the relay. Turning the air conditioning ON supplies battery voltage through the pressure switches to the VCM. I'll post a picture below so you know what the relay group looks like. Look into This! Use a digital voltmeter to measure the ground and voltage of the battery at the detached connector cable. There is no need to switch on the air conditioning system for this method to work. It is an ominous sign when the clutch engages but the compressor does not spin. If your car is compatible with R134a type of refrigerant, attaching a can to the system will override the low-pressure switch and restore the normal function of the compressor clutch. ��8~p��AY�Ϋ�̟u����OB If only the pulley is rotating, the compressor clutch is having an issue, which could be stemming from several sources – a blown fuse, bad clutch oil, low-pressure lockout, or an open wire in the oil. AC System function, adding relay to clutch wire Addition of relay to operate air conditioning compressor In a separate PDF in this section of the website there is a wiring diagram which shows the installation of a relay in the ‘Air Conditioning Compressor Clutch’ circuit. Return to the relay. An automobile can have numerous serious problems and a dysfunctional AC compressor clutch is one of them. Check the three wires again. Get the Complete List, The Easy Way to Use a Recharge Kit for Car AC. If it is, then the relay is functioning correctly and the A/C clutch is bad. Attach the other end of the jumper wire to the positive terminal of the battery. Moreover, because of being passionate to learn about the recent happenings in auto industry, he doesn’t only provide great car maintenance tips, he also always updates latest trends in among car brands and share them in his own interesting viewpoint. 000569, Member of Tokyo Chamber of Commerce Boueki - 201650, How To Manually Engage AC Compressor Clutch: The Easiest Methods, Things To Avoid While Driving An Automatic, Best Tire Pressure Monitoring System Reviews, The Best TOAD Vehicles for Frequent Campers. In most cases, the relay is mounted on the fender well or fire wall. This test confirms that the interior A/C control switches are functioning. Check the owner’s manual to check the correct instructions for checking up the compressor oil and level and filling it up. Is Spoon Engine A Real Thing? stream Changing the compressor clutch could be the only solution in this case. You have to make sure that the compressor has enough oil to function properly. Move on to the clutch relay if the fuse turns out fine. A bad AC compressor clutch needs immediate fixing. The next section tells you how to manually engage AC compressor clutch at home. A delay can cause serious damage to the air conditioning … Tips – When you are going to manually engage the compressor, make sure that the system has enough oil. Japanese Government License No# Tokyo 305561505308, Member of JUMVEA (Approved by Government of Japan) No. Using a 12-volt test light, connect the alligator clip to the negative terminal on the battery. Plus, you should also know how to examine the clutch to find out if it is faulty or not. With the engine running, turn the A/C control or switch to "on" at the dashboard. If the clutch doesn't engage you'll need a volt /Ohm meter to measure resistance of the clutch … Locate the air conditioner clutch relay by tracing the wire connection from the air conditioner compressor plug-in to the relay. When the VCM receives the voltage on the A/C request signal, the A/C enable relay circuit is grounded. In this step, you have to detach the connector cable from clutch oil. Check all three wires with the test light; with the engine running, the wires should all be inactive. This will bypass the relay and engage the A/C compressor and confirm that the relay is defective. The AC one has two pink wires, a dark green wire and a dark green wire with white stripe. The A/C compressor clutch … If you are experiencing issues with your AC system and suspect that your AC relay has either failed or is beginning to fail, we recommend having it diagnosed by a professional technician. Also, find out whether the clutch and the pulley are spinning. Now plug the relay back in and disconnect the two-wire feed at the A/C compressor connection. Easy. While performing the checks, do not leave the relay bypassed for any length of time because the A/C compressor is designed to cycle off and on, running continuously. Low level of refrigerant. In most cases, the relay is mounted on the fender well or fire wall. In a few car models, the power of the air conditioning system flows from the AC switch to the fuse before being transmitted to the clutch oil through the low-pressure evaporator temperature.

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