Question about 2007 Honda Ridgeline

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Which wires to bridge to bypass pressure sswtich

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  • martfi May 24, 2012

    the freon pressure switch has 4 wires, which wires can be shorted to bypass the switch and start the compressor in order to add freon



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If you are talking about the low tire pressure light. You have battery opperated transmitters in the tire valves of each wheel. It would be smart to replace all four at the same time and save yourself a lot of headaches.

Posted on Jan 26, 2015


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It is just the two wires at the base of the steering column, but you have to emulate the key for the system to work. You will need to register the ohms of the chip in the original key and make yourself a resistor to bridge the connection.

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You can't bypass the entire system. It has to remain operational, however you can bypass the most common failure item.
could try bypasssing fuel relay You bridge connections on relay if i remember right.

The most common failure in these is the sensor in the ignition lock that reads the key pellet. That would mean replacing the ignition lock with a sensor included.

That sensor can be bypassed. You would need a digital ohmeter to measure the resistance of the pellet in the key. Now go to Radio Shack and buy a resister of the exact same value as the key pellet. Go to the base of the steering column and locate the two thin white wires that go up to the sensor. Cut the two wires and solder the resister between the two ends coming from the harness. This will permanently bypass the sensor but not the rest of the system.

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Yes, bridge the starter solenoid post to the starter battery cable post. Use a small jumper wire or just a small screwdriver. Have the key off, vehicle in neutral-bridging the terminals will cause a good starter to start cranking the engine.

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find the relay and using a multi meter /circuit light find the power ( ignition switch off) wire the terminal directly opposite will be the other wire you want . bridge out the two wires

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Check the brake light switch (location pedal) unplug the switch & bridge the wires & if the brake lights come on the switch is faulty. all you are doing by bridgeing the wires is bypassing the switch. What is SLS?

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When you evacuated the system, did you also vacuum it so that it has and holds 30 In/v? If it is not under vacuum, you may have to over ride the low pressure bypass by bridging the wiring to get the clutch to engage, but after you have added about 24 oz. of 134a I would think it should cycle-don't forget you also need to add about 6 Oz of PAG oil if you did really vacuum it out.

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How do you bypass a lowpressure switch on a 2003 kia sedona

Bypassing the low pressure a/c switch can cause damage to the a/c compressor. A basic low pressure switch (two wires) can usually be bypassed by jumping the two wires. If it has more then two wires it can't be easily bypassed.

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I have a 2003 windstar, I added refridgeratant and the compressor is working, I have 38 PSI in the line and yet the cooling lines do not get cold. It's still blows room temp.

Look at your compressor clutch, if it is engaging fulltime. Then look for a pressure switch on the black tank or close to the black tank.

This would be the switch some books tell you to bypass when you fill the A/C to charge it. You make a loop wire to bridge the connector after you disconnect the low pressure switch. Run the A/C with this bypass and observe the A/C lines.

If the lines now freeze, then the low pressure switch is bad. The low pressure switch may be replaced without discharging the system. Also remember to put the A/C on max and open the doors or windows to make it difficult to cool.

After you install the new switch check your overall pressure.

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1 Answer

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I believe u are not bypassing the correct switch be careful when bypassing u can damage something if u don't know what u are doing

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