Non-SRS Wiring Repairs: Mitsubishi

What is a non-SRS wiring repair? It is the repairing of an electrical component that is not part of the supplemental restraints system circuit (usually identified by yellow wire looms). As technology increases on vehicles, so does the number of components that utilize electricity. Many of the sensors and modules are becoming smarter and more sensitive. If the wire is too long, the wrong gauge, or spliced in the wrong location it can cause malfunctions in the components that it’s powering. Many OEMs have different restrictions and guidelines for repairing wiring that does not control SRS components. On the other hand, there are OEMs that don’t allow wiring repairs at all, so full harness replacement is the only option.

Mitsubishi provides procedures of wiring repairs that can be performed. To find these procedures, go to Click on the service information tab at the top of the webpage, then click continue. Enter the year and model of the vehicle being repaired. Click on the service manual button underneath the search box. Once you get to the Service Manual, to go 00E-General Electrical, and expand the category for How to Diagnose. Here you will find procedures on how to check connections and check electrical components for damage. To find Splice locations for wires, go to 80B-Splice locations.

Examples of information from the 2018 Mitsubishi Outlander splice locations documents are:

  • How to Read Splice Locations: "Splice locations" describes splice points of each wiring harness on an actual vehicle. Some variations are included in one splice location. Accordingly, some locations may not be applicable for individual vehicles.”
  • How to Read Splice Locations (splice point number): "The splice point numbers are identical to those in the 'CIRCUIT DIAGRAMS', making them easy to use. In addition, the splice point numbers are usually numbered clockwise." These numbers are called "splice points." To determine the exact location, and information on the wires, refer to the circuit diagrams in the service manual and locate the splice point numbers within the diagrams.

It is important to read the service and repair manuals to make sure what repairs can be carried out and where, to achieve a complete, safe, and quality repair.

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