How To Bypass Computer Controlled Alternator

A voltage regulator is built in the vehicle to supply the right amount of energy of DC voltage from the battery to the engine. In a situation where the voltage regulator fails to command your vehicle's voltage or another voltage issues, what do you exercise? Can you bypass the voltage regulator? Yes! yous can bypass the voltage regulator on an alternator.

We will go-ahead to let you know how to bypass the voltage regulator and what you should look out for in a bad voltage regulator. Not merely will you know how to troubleshoot, but y'all will also exist able to know what to do to fix the upshot.

How to Bypass Voltage Regulator of a PCM

PCM means Powertrain Command Module and bypassing it can resolve the voltage issues as regards supply problem. We step by step guide you lot through making an alternator that will do the piece of work of an external voltage regulator. The process of newly creating an alternator is in two phases – setting up the alternator voltage regulator and connecting the regulator.

To begin the process, you lot will need to get an aftermarket voltage regulator, regulator plug harness, and wires for connectedness purposes.

Phase 1: Setting upwardly the Alternator Voltage Regulator

The steps to follow for setting up the alternator Voltage Regulator are –

Step i – Wiring Harness with the Alternator

The harness plug comes with ii wires. A blue wire and a green wire. The blue wire will exist connected to the alternator while the green wire will connect to the other side of the alternator plug. The red wire is connected to the positive side of the battery.

Your harness can sometimes be 2, all you need to do in this case is to connect and bring out some other wire from the blue wire.

Hither is a pro tip for you – the ruddy wire continued to the side of the battery should exist continued to a fuse box. This is washed to prevent any possible drainage when the engine is switched off.

Pace two – Taping the wires

Using whatever practiced tape, tape upwards the wires at the connection point for prophylactic purposes. Taping the wires is to preclude against the wires against any leakage or fuse.

Phase 2: Connecting the External Regulator

Check out the steps to follow in connecting the external regulator to the battery and the ECM panel.

Footstep ane – Opening the FrontEngine Hood

The voltage regulator can just be found in the forepart engine hood hence the demand to open it. Of class, you should not open the engine hood when it is hot. Allow the engine hood to get cold because you volition be working with wires so as not to burn your easily. For better precaution, put on hand gloves before you commence the wirework.

Footstep 2 – Blocking all Power Sources

To block all power sources from the bombardment to the voltage regulator, the terminals of the battery should be disconnected.

The battery is asunder by detaching both the positive and negative terminals of the battery.

Footstep 3 – Locate the Voltage Regulator

Locating the voltage regulator is the next step to take subsequently disconnecting the battery terminals. Information technology volition be institute near the voltage regulator attached to the vehicle computer panel. Once y'all can locate the vehicle computer panel, cheque for a rectangular-shaped socket. Inside the socket, there volition be four visible connected wires it. The alternator is to exist connected with the voltage regulator wire coming out in the socket.

Step 4 – Mounting the External Alternator

Using bolt screws, mount the alternator voltage regulator on the inner fender or on the firewall. Make sure to use one sail metal screw for grounding.

Step five – Connexion of the Wires to the Alternator Voltage Regulator

The light-green wire coming out from the alternator should now exist connected to the bottom mail service to the voltage regulator. The green wire should then pass on to the tiptop post of the voltage regulator. The light-green wire is an output voltage of 12V from a key switch of 12 volts.

Cut off the bad wires that were connected earlier and isolate them with taping. They are no longer needed.

Step six – Connecting a Fuse Box to the Voltage Regulator Switch

Using a voltmeter, find out the 12V key switch from the switchboard panel's back. The fuse box connectedness can not be done unless the 12V cardinal switch is found.

Put a fuse and hook it up into the lesser slot of the switch box.

Step 7 – Connect the Wire with the Bombardment

The ruddy wire should now be continued to the bombardment's positive terminal. The grounding wire coming out of the alternator regulator should go to any ports on the voltage regulator.

At this point, you lot have completed the bypassing of the PCM voltage regulator.

We promised to allow you know how to bank check for a bad voltage, read on. Here are some of the signs you should check out for in a bad voltage;

Clusters may stop running properly
Check for flashing battery light or check engine light dimming
Gauge showing an inaccurate reading
Check the volt gauge for the voltage readings. Check for sudden low or high voltage
There might be a complete no voltage reading sometimes

Upon noticing any of the above-listed symptoms of a bad regulator, check your voltage regulator immediately. The error could be traced to the gauge system.

How to Exam Voltage Regulator

A multimeter is used for testing the Voltage Regulator. Follow the steps highlighted below to test for the voltage regulator

Step 1 – Connect the Multimeter

The multimeter comes with two wires. A red and a blackness wire. To connect your multimeter with the engine bombardment, connect the blood-red wire to the positive final of the battery. And connect the black wire of the multimeter to the negative terminal of the battery.

When you are done connecting the multimeter to the battery, switch on the power of the multimeter. The ability is switched on by turning the knob towards the voltage (V) DC.

Footstep 2 – Start the Engine

Showtime the engine to get the voltage reading on the multimeter screen. The multimeter should read around 12.6 volt

Step 3 – Increase the Engine Ability

To check if the voltage is increasing with an increase in rpm, the fuel power should be increased and gear up idle from 1500 – 2000 rpm. If it increases with an increased rpm, information technology only ways one thing. That the voltage regulator needs replacement or repair.

If the voltage is found to not exceed 12 volts but instead is noticed to be decreasing. It translates to mean that, the battery is unable to provide a proper power supplement or maybe the alternator is non getting an acceptable charge.

In this example, it could merely hateful that whatever of the connections are rusty or loosened and have failed to supply the proper voltage. Troubleshoot by checking all the terminals connecting the battery to the voltage regulator.

If the voltage reading remains on or around 12.half dozen volts. Information technology indicates that the voltage regulator is in perfect working status and so the problem should be the battery or the estimate.

If the voltage regulator issue won't resolve past whatsoever of the above methods. So you lot should become for an installation of an external voltage regulator bypass. This should resolve entirely the voltage issues.

"How to Bypass Voltage Regulator of a GM PCM?", is one most oft asked questions. We volition for the sake of this article answer it.

How to Bypass Voltage Regulator of a GM PCM

In the case of a voltage regulator failure in a GM, it is non practical to just consider replacing the failed regulator with a new one. In a typical GM voltage regulator, when the ignition switch is turned on, current flows through the fuses of the gauges through the battery lite and also through the brownish wire to the plug on the side/back of the engine.

One time the engine is perfectly running and developing output, the regulator looks internally to cheque out for arrangement voltage. When it is working well, information technology puts the complete system voltage dorsum out on the chocolate-brown wire. With the same voltage on both sides, information technology turns off.

A failed diode is as well a common fault of a GM voltage regulator. Once one fails, y'all volition be able to go only nearly i-third of the unit's rated current, I.e the ripple voltage will be very loftier. Zener diodes are normally used to counter the upshot of a high ripple voltage when it happens.

Related thought: engine power reduced

Final give-and-take

This article is written in then many details, that it could so easily laissez passer for a complete transmission guiding you through the bypassing process of a PCM voltage regulator. All you need to practice is consciously follow the steps highlighted to a higher place.

Nosotros will like to know if this article gave answers to your questions on how to bypass the PCM voltage regulator. Did y'all endeavour using the steps in this article? Did they help resolve the issues you had with your voltage regulator?

Source: https://vehicleic.com/how-to-bypass-pcm-voltage-regulator/