Truck Electrical Circuit Service

Question 1

all electrical schematics are drawn in the

Answer 1

de energized position and the electrical components are drawn in the normal position

Question 2

the lighting circuits in most trucks will be

Answer 2

in parallel

Question 3

the troubleshooting process of finding specifically where the fault is located is called

Answer 3

isolating the electrical fault

Question 4

what is a quick way to accurately pinpoint the circuit fault location

Answer 4

using the four point test procedure

Question 5

when connecting the DDM into the truck system what should you NEVER do

Answer 5

pierce the insulation of the conductor

Question 6

when splicing multi strand wire how much insulation should be striped before joining

Answer 6

3/4” or 20 mm

Question 7

what method is used to connect two wires of different gauges

Answer 7

crimp splice using splice clip

Question 8

when using crimp and seal sleeves how much insulation should be removed

Answer 8

5/16 “ from each wire

Question 9

why is it important to follow troubleshooting flow charts or troubleshooting trees

Answer 9

many component warranty claims require you to completely follow and complete a troubleshooting tree

Question 10

never splice into Yellow covering wires because

Answer 10

they are typically used in the SRS components and could cause accidental discharge of the SRS system

Question 11

why must you wear rubber gloves and eye glasses when handling a deployed air bag

Answer 11

to prevent sodium hydroxide or metallic sodium from coming into contact with your skin and eyes