Test your expertise on diagnosing automatic gearbox faults! Perfect for seasoned car mechanics and enthusiastic gearheads, this quiz will challenge your knowledge on common and obscure issues alike. Can you pinpoint the problems based on symptoms alone?
1. If an automatic gearbox is stuck in 'N' and no shift is possible, but the problem persists even after confirming mechanical actuation, what is the most probable cause?
Hydraulic pump defective
Shift / selector lever defective
Pressure sensor defective
Accumulator defective
2. What symptom often occurs due to an automatic gearbox's internal sensor failure?
Inconsistent gear shifts with delays
Pump runs constantly
Starting is almost impossible
Gearbox stuck in 'N' and blocked
3. Gear selecting is not possible via the shift selector lever but is possible using diagnostic software. What is the most plausible fault?
Gear position sensor failure
Hydraulic pump defective
Shift / selector lever defective
Pressure sensor defective
4. If an automatic gearbox's hydraulic pump runs only briefly, but the system does not hold pressure, what is the most likely cause?
Pressure sensor failure
Hydraulic fluid low
Pump relay defective
Accumulator defective
5. What should happen to the system pressure after the engine is switched off?
It should drop only 2-3 bars and remain steady
It should increase slightly
It should remain completely constant
It should drop rapidly to zero
6. What often causes the system to turn off unexpectedly, even when parked with the ignition on?
Electrical fault in control wiring
Faulty ignition key
Accumulator defective
Pressure sensor defective
7. Which component failure is indicated by clutch chatter and difficulty starting, but only at high speeds?
Pressure sensor defective
Gear position sensor failure
EV0 defective valve of the clutch control
Accumulator defective
8. If there is a flashing gear indicator and gears can be skipped with a sense of delay, what is the most likely issue?
Pressure buildup
Sensor failure
Shift / selector lever defective
Hydraulic pump failure
9. When troubleshooting a gearbox issue with no error codes, what should be the first step?
Do a visual exam looking for leaks and broken wires on the gearbox
Calibrate the clutch
Change the gearbox oil
Replace the hydraulic pump
10. What is a likely indication that the accumulator is defective, distinctly affecting the gearbox performance?