Troubleshooting

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Call 602-909-1961


Business Hours:
Monday-Thursday 9am-5pm

Troubleshooting

A bypass harness is a wiring harness used to bypass the original truck OEM wiring to the engine ECM. The harness has everything that the engine needs to run. It has a data link connector used to communicate with the ECM. In addition, there is a throttle connector so that you can plug in a throttle and rev up the engine. The large alligator clips make connecting to a power supply fast and easy.

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Problem
A customer stops by in a hurry and wants you to plug in to see why the check engine lamp is on. However, your service tool cannot communicate because the truck has a damaged wire at the diagnostic connector or ECM.

Solution
If you have a bypass harness, you could plug in directly into the engine bypassing the broken wire. Allowing you to read the faults and advise your customer. 

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Problem

You have just finished swapping engines in a truck only to find that the "good engine" you just put in has problems.

Solution
If you have a bypass harness, you could have tested the engine first, ensuring that the engine was free from defects (e.g. leaking, missing, smoking, vibrating, faults).

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Problem
Engine cranks but won't start.

Solution
Connect bypass harness to isolate the engine from the truck. If the engine starts, the problem is in the truck's electrical system. If the engine still won't start, the problem is with the engine.



Mawk Industries, Inc. 18145 W. Golden Lane, Waddell, AZ 85355
Business Hours Monday-Thursday 9am-5pm
602-909-1961  |  E: mawkindustries@cox.net
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