FIRST™ is an auto/truck electrical system troubleshooting flip chart that briefly focuses attention on possible problems in the primary electrical system, consisting of battery condition, major ground connections and generator (alternator) charging system performance.
Two flipchart versions are available!
FIRST-Pro for 1-battery 14V system.
FIRST-2 for 2-battery 14V system.
DON'T FORGET! Every vehicle that comes in the shop has at least one battery, two major ground circuits and a generator (alternator) charging system that operates all electrical and electronic circuits on the vehicle. A component failure or a bad connection in one of these essential electrical circuits could have a profoundly negative affect on a vehicle's electrical or engine performance!
Problems in these essential vehicle electrical circuits are often overlooked and seldom tested resulting in wasted man hours and parts changing that does not resolve the driveability problem.
Problems must be quickly indentified and corrected but never overlooked.
It takes less than 5 minutes, with a little practice to perform these quick electrical system voltage tests with a DMM and identify any of these crucial electrical circuit problems that drastically affects vehicle performance.
FIRST™ quick electrical tests should be performed "FIRST" on any vehicle that has . . .
(1) an electrical problem,
(2) an on-board computer problem or failure,
(3) a no-code (no DTC) driveability problem.
When you find your first electrical problem in the primary electrical system with a copy of FIRST THINGS
FIRST™ you will be glad you had the flip-chart to guide you. It will pay for itself on the first repair. Here are technicians learning the 14 test step procedure by following simple instructions with illustrations.
FIRST™ guides a technician through simple electrical tests to identify common battery problems, issues with corrosion in the engine and accessory grounds as well as verifyng the charging system IS or is NOT performing properly.
You can't overlook any of these electrical problems in a vehicle's primary electrical system and expect the vehicle to perform properly.
It would be unfortunate to test a bad electrical circuit the wrong way and get a good reading and you think the bad circuit is good!
Or, test a good electrical circuit the wrong way and get a bad reading which makes you think the good circuit is bad!
You will waste labor time or change good parts that do not fix the problem and that is very expensive.