150 Systems Fault

Question 1

Why does the fire bell ring?

Answer 1

Fire system operated

Question 2

Why would the AWS/TPWS not sound/ self test when keying in?

Answer 2

Battery isolation switches/ control negative fuses blown

Question 3

No cab or interior lights in saloon, cause?

Answer 3

Aux battery isolated
Low battery voltage
Lighting mcb tripped

Question 4

Why could you get brake release but no power?

Answer 4

DRA set
DRA defective
F&R master switch defective
Door interlock fault
Gearbox cogs not in correct position

Question 5

Gearbox train and unit lights all lit when switching in?

Answer 5

TCA fault

Question 6

Why would gearbox train and unit lights all remain lit when driving and you lose power?
No hazards on outside

Answer 6

WSP sensors
Excessive slip or slide
Retardation due to dragging brakes
Drive line fault or seized axle

Question 7

Gearbox train light lit?

Answer 7

Train control mcb tripped in other cab
Parking brake appliedwheel slip or slide

Question 8

Gearbox train and unit lights lit, speedo to zero, cause?

Answer 8

Both speed sensors have failed