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ASE Truck Equipment

TE2 Truck Equipment — Electrical Install — practice test

Studying for TE2 (Truck Equipment — Electrical Install)? Overhaul Prep has 172 verified TE2 questions written to the current task list — in the same formats the real exam uses (direct, Technician A/B, EXCEPT and most-likely-cause). Every answer comes with a written explanation, so you learn why instead of memorising a letter.

172TE2 questions
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9,711questions in total
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Sample TE2 questions

Straight from the bank — answers highlighted, with the explanation underneath.

On an ISO (Bosch-style) relay, terminal 30 is the:

  1. One side of the control coil
  2. Normally closed contact (87a)
  3. Battery-voltage feed to the relay's common contact
  4. Switched ground for a dash lamp
WhyIn DIN 72552 numbering, terminal 30 is the common movable contact fed from battery power; 85/86 are the coil and 87/87a are the output contacts.

A 15-amp circuit keeps blowing its fuse. Technician A says to install a 20-amp fuse to stop the nuisance. Technician B says to find and repair the overload or short because a larger fuse can let the wire overheat. Who is correct?

  1. Technician A only
  2. Technician B only
  3. Both Technicians A and B
  4. Neither Technician
WhyUp-sizing the fuse defeats the wire's overcurrent protection and is a fire risk; the correct action is to diagnose the fault. Technician B is right.

A newly installed accessory blows its fuse the instant power is applied, even with the accessory switched off. The MOST likely cause is:

  1. An open circuit in the load
  2. A direct short to ground in the feed wire ahead of the switch
  3. A weak battery
  4. An undersized ground
WhyImmediate fuse failure with the load off points to a dead short to ground on the supply side, giving near-zero resistance and very high current.

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