Cheat sheet
ASE A5 Brakes Cheat Sheet
Hydraulic, Assist, Parking
- 43% of exam
- Master Cylinder Lines and Hoses Valves Power Assist Parking Brake
Drum Brakes
- 11% of exam
- Shoes Drums Wheel Cylinders Hardware Adjusters
Disc Brakes
- 24% of exam
- Pads Rotors Calipers Slides Runout
Electronic Brake Controls
- 22% of exam
- ABS TCS ESC Wheel Speed HCU
Quick Facts
- Test A5 Brakes
- Scored questions 45
- Total questions 55 with research
- Time allowed 75 minutes
- Largest domain Hydraulics: 43%
- Certification term Five years
- Testing focus Diagnosis and repair
- Recertification 23 questions, 30 minutes
Diagnosis Loop HY
- Verify, inspect, measure, test, verify.
- Cause first Repair proof
Spongy vs Hard Pedal HY
Spongy
- Excess pedal compliance
- Check hydraulic condition
Hard
- High pedal effort
- Check power assist
- Pedal feel guides testing
Pedal Symptom Picker HY
- Pedal feels spongy → Check hydraulic condition ( Air or fluid )
- Pedal feels hard → Check power assist ( Booster inputs )
- Pedal travels low → Inspect system travel ( Use specifications )
- Vehicle pulls → Compare brake forces ( Inspect affected side )
- Brake drags → Check release path ( Hydraulic or mechanical )
- Fluid is low → Find leak source ( Do not just refill )
- Warning lamp on → Retrieve system data ( Follow service information )
- Repair completed → Verify brake operation ( Confirm original concern )
Pedal and Pressure HY
- Low pedal Check hydraulic travel
- Spongy pedal Check compressible air
- Hard pedal Check power assist
- Pedal fade Check heat-related loss
- Master cylinder Creates hydraulic pressure
- Pushrod length Measure before adjustment
- External fluid leak Inspect source first
Pedal Clue HY
- Soft seeks hydraulics; hard seeks assist.
- Spongy Booster
Lines, Valves, Switches HY
- Brake line Inspect routing and support
- Flexible hose Inspect kinks and bulges
- Fittings Inspect leaks and damage
- Proportioning valve Manage axle pressure
- Metering valve Control brake application
- Warning indicator Test circuit operation
- Brake switch Verify signal and adjustment
Assist and Parking HY
- Vacuum booster Reduces pedal effort
- Hydraulic booster Uses fluid assistance
- Booster check valve Preserves assist vacuum
- Parking brake Holds stationary vehicle
- Parking cable Inspect routing and operation
- Electronic parking brake Diagnose control operation
- Brake fluid Use specified type
Diagnostic Method HY
- Verify concern Confirm symptom first
- Visual inspection Find leaks and damage
- Compare sides Spot abnormal differences
- Measure Use manufacturer specifications
- Test circuit Confirm cause before repair
- Repair verification Confirm corrected operation
- Documentation Record findings and repair
Drum vs Disc DR
Drum
- Shoes contact drum
- Wheel cylinder applies
Disc
- Pads contact rotor
- Caliper applies
- Identify the friction design
Drum Components DR
- Brake shoes Create drum friction
- Wheel cylinder Applies shoe force
- Return springs Retract brake shoes
- Adjuster Maintains shoe clearance
- Backing plate Supports shoe hardware
- Brake drum Inspect friction surface
- Parking linkage Apply and release
Pull vs Pulsation DI
Pull
- Uneven brake force
- Compare side operation
Pulsation
- Cyclic pedal response
- Measure rotor condition
- Match symptom to measurement
Disc Components DI
- Brake pads Inspect wear pattern
- Caliper piston Applies pad force
- Caliper slides Allow caliper movement
- Rotor thickness Measure against specification
- Rotor runout Measure lateral variation
- Rotor surface Inspect condition
- Pad hardware Control pad movement
Electronic Order EL
- Codes, inputs, circuits, controls, confirmation.
- Scan data Service information
ABS vs TCS EL
ABS
- Braking wheel-lock control
- Uses wheel-speed inputs
TCS
- Acceleration slip control
- Targets drive wheels
- Brake versus traction event
ABS Complaint Picker EL
- ABS lamp illuminated → Read DTCs ( Record before clearing )
- Wheel data differs → Inspect sensor circuit ( Sensor and ring )
- Signal missing → Check wiring condition ( Use specifications )
- ESC concern → Check input data ( Yaw and steering )
- TCS concern → Check wheel speeds ( Compare drive wheels )
- HCU suspected → Follow test procedure ( Avoid guessing )
- Component replaced → Perform required setup ( Vehicle procedure )
- Codes return → Continue root-cause diagnosis ( Do not repeat parts )
Electronic Inputs EL
- Wheel-speed sensor Reports wheel rotation
- Reluctor ring Creates sensor signal
- Brake pedal sensor Reports driver request
- Yaw sensor Reports vehicle rotation
- Steering-angle sensor Reports steering intent
- Scan data Compare reported inputs
- DTC Start directed diagnosis
DTC vs Diagnosis EL
DTC
- Points toward circuit
- Start testing path
Diagnosis
- Confirms actual cause
- Uses tests and data
- Code is not proof
Electronic Controls EL
- ABS Limits wheel lockup
- TCS Limits drive-wheel slip
- ESC Supports directional stability
- Hydraulic control unit Modulates brake pressure
- Control module Interprets system inputs
- Warning lamp Verify concern and codes
- Service information Use vehicle procedure
Common Traps
55 ≠ Scored Count
- 45 scored questions ≠ 10 research questions
DTC ≠ Failed Part
- Code starts diagnosis ≠ Test before replacement
Hard ≠ Spongy
- Hard suggests assist ≠ Spongy suggests compliance
ABS ≠ TCS
- ABS limits lockup ≠ TCS limits slip
Specification ≠ Guess
- Measure actual condition ≠ Use vehicle information
Last Minute
- 1. Prioritize hydraulic diagnosis
- 2. Read all symptom qualifiers
- 3. Inspect before replacing parts
- 4. Measure against vehicle specifications
- 5. Compare left and right
- 6. Separate drum from disc
- 7. Read codes before clearing
- 8. Check electronic system inputs
- 9. Follow required service procedures
- 10. Answer all 55 questions
ASE A5
- Practice Questions 200 questions Study Guide 39 topics Cheat Sheet 56 facts Flashcards 50 cards Videos 1 video Blogs 1 blog 1 Job Wiki Free CE Podcast