287
5 The Pedal must be depressed heavily Likely Causes
[Description]
Use traditional method to check
the booster and the brake pedal stroke. Scan
meter HCU function can be used to check the
fault of the normally-open valve
 Boost faulty
 Normally-close valve faulty
Replace the HCU
Use Scan meter HCU function can be used to check the
normally-open valve
Check the booster and the pedal stroke with Non-ABS tra-
ditional method
Ok
Abn.