starting point for a troubleshooting routine. Some common sys- tem malfunctions related to poor power or ground connections can range from a completely non-functioning system to a sys- tem that does not perform functions as expected or to audio noise entering the system. Other common system malfunctions not associated with
power or ground connections can include improperly adjusted levels, incorrect circuit’s connections and improper connections that include poor crimp connections or cold solder connections.
STEP 1: IDENTIFY If a consumer returns to the shop with a problem that mate- rialized some time after the initial installation, it is important to speak directly with the customer to get a clear explanation of what malfunction they are experiencing. Relying on a second hand assessment will usually cause you to lose more time than it can save when troubleshooting a malfunction. The next step would be to identify the failure described by the customer and then attempt to duplicate it. Keep in mind that some malfunctions are intermittent and when the customer ar- rives at the shop, the malfunction may not occur. At this point the customer should be queried as to the conditions when the malfunction occurs. These conditions can include the time of day, location and even temperature. It is possible that the only way to identify the failure is to witness it firsthand. In some cases, such as when the malfunction only occurs when the temperature is colder early in the morning, it may be neces- sary to keep the vehicle overnight in an attempt to recreate the malfunction.
STEP 2: ISOLATE
After the problem has been identified, the next step is to isolate the trouble area and determine in what stage of the circuit the problem exists. For example, if the complaint was audio noise in a vehicle that has an aftermarket amplifier, you would want to isolate the power and ground inputs to the am- plifier with an external source to see if the issue still exists.
It should never be assumed that the equipment is defective. The wiring connections should always be verified first. All test- ing should be done with the system completely connected, as some voltage or current readings may appear normal without a load present. If the customer’s complaint is the battery died over night, a current draw test must be performed, therefore the system must be connected.
The challenge when troubleshooting any issue is the isola- tion of that issue. Many techs jump around testing random areas within the circuit which becomes cumbersome and waste of valuable labor and time. Isolation skills develop over time and with direction from more experienced installation techni- cians, such as those MECP certified and practice.
STEP 3: ELIMINATE After isolating the problem, the source of the issue can be eliminated. Eliminating the issue may be as simple as changing a programming setting or replacing part or the entire product. If the problem seems to be power or ground related and no fault is found in the systems wiring, the vehicle battery connections should be checked and cleaned if necessary. If the problem persists, the battery should be load tested and replaced as necessary. Once the malfunction has been identi- fied and corrected, it is important to thoroughly test the system before returning the vehicle to the customer. Troubleshooting can seem to be a daunting task to a new installer. It does take time to gain the experience to become an efficient and effective troubleshooter. Over time a routine will develop making troubleshooting much easier.
The best
troubleshooters in this industry are always the best and most successful installers. To become even more proficient and suc- cessful, become MECP certified, demonstrating competency of understanding a wide range of job-related subjects. MECP cer- tification also offers a differentiator from those who have not made the step to “invest” in their careers through education and skill-building.
MECP Certifications for April 2011
MASTER INSTALLERS Kris Hoag — Bothell, WA Roberto Torres — Elgin, IL Charles Roberts — Globe, AZ Brandon Huntington — Jackson, CA Brittney Parker — Mary Esther, FL Kris Hoag — Bothell, WA Roberto Torres — Elgin, IL Charles Roberts — Globe, AZ
Brandon Huntington — Jackson, CA Brittney Parker — Mary Esther, FL
ADVANCED INSTALLERS Larry Blevins — Roy, WA Jordan Korus — Plymouth, MN Joey Navejas — Peoria, AZ Shawn Conley — Springfield, OH
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