ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
Vdiag No: 04
STOREDBRAKE LIGHT SWITCH CIRCUIT
NOTESConditions for applying the fault finding procedure to stored faults:
Clear the stored fault, carry out a road test at a speed of > 36 mph (60 km/h) and test
the brakes using ABS. Use the interpretation of the fault if it recurs.
The fault is detected if the computer does not detect a brake lights switch status
change for 4 acceleration/braking cycles and/or the contact is closed for over
6 minutes with the vehicle speed above 24 mph (40 km/h).
Using the diagnostic tool, check on the statuses screen that ET017 Brake pedal recognises the depressed and
released positions of the brake pedal.
If the pedal position is not detected, use the interpretation of ET017.
If the fault is still present, contact the Techline.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.