2014 ATS Electrical Testing

This new 2014 electrical testing procedures is designed to fix most complex electrical diagnosis like multiplex circuits. In order to be able to do it, please follow the following step by step procedures:

1). Investigate the original complaint.

If the engine is operational, start it and see for yourself if the symptoms will come out. You need this to discover:

* accuracy of the complaint

* To give you an insight as to the cause of the problem by:

-checking the power source

-clean the wire terminals

-tightness of the wire connections

-mechanical defects such as broken or loose parts

-turn on the switches and see how components work

2). Isolate the specific problem.

You need to find the specific causes and locations of the problem so you can find it easily the root cause:

* Trace it in the wiring diagram

* Review the available service bulletin concerning the problem

* Start with the easy problems first

-Check fuses and circuit breakers

-Connecting bulbs and lamps

-Component switches

3). Testing the cause of the problem.

Using your digital voltmeter, start measuring the voltage and continuity of the suspected component or wiring circuit.

4). Verify the problem.

After making the testing, confirm that you have found the definite culprit component or circuit by by operating the component or wiring circuit.

5). Perform the repair to the component or circuit.

You can either repair or replace the defective component or circuit wires.

6). Confirm the repair to the component or circuit.

You can operate again as you did in step 1 and make sure sure the symptoms did not come back. Provide some allowance in case the symptom is intermittent.

Wiring Diagram Tips:

1.) Nothing beats experience and the only way to get it is to do it more. If possible, record it in your laptop or mobile device specially the images of your important discovery for future references.

2.) Intermittent wiring problems:

Just about almost every cause of intermittent wiring problems are due to defective wirings. If a component is suspected instead, check it's relays for sticking conditions. Otherwise, check for wirings for:

a.) wiring connectors not fully seated or loose

b.)terminals pushed out or partially connected.

c.) Green rust corrosion on terminal ends or dirts

d.) Damaged terminal housing exposing the wires to corrosion or moisture.

e.) wires rubbing thru the vehicle frame or battery ground.

f.) Broken wire strands inside the wiring insulation usually about 6-12 inches from the terminal.

3.) Basic knowledge of the wiring diagram is critical in understanding when an intermittent problem occurs. Typical example is knowing meaning of the following: power sources, electrical pathways, power users and power control. If you know how these interacts in the wiring circuits, then you are halfway there in solving intermittent wiring problems.

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