| General |
| MAST5002 |
Research vehicle service information such as fluid type, vehicle service history, service precautions, technical service bulletins, and recalls including vehicles equipped with advanced driver assistance systems (ADAS). |
| MAST5057 |
Identify brake system components and configurations. |
| MAST5058 |
Retrieve and record DTCs, OBD monitor status, and freeze frame data; clear codes and data when directed. |
| MAST5003 |
Describe procedure for performing a road test to check brake system operation, including an anti-lock brake system (ABS). |
| MAST5004 |
Install wheel and torque lug nuts. |
| MAST5001 |
Identify and interpret brake system concerns |
| Hydraulic System |
| MAST5005 |
Diagnose pressure concerns in the brake system using hydraulic principles (Pascal's Law). |
| MAST5006 |
Measure brake pedal height, travel, and free play (as applicable); determine needed action. |
| MAST5007 |
Check master cylinder for internal/external leaks and proper operation |
| MAST5010 |
Inspect brake lines, flexible hoses, and fittings for leaks, dents, kinks, rust, cracks, bulging, wear, and loose fittings/supports; determine needed action. |
| MAST5013 |
Select, handle, store, and fill brake fluids to proper level; use proper fluid type per manufacturer specification. |
| MAST5015 |
Identify components of hydraulic brake warning light system. |
| MAST5016 |
Bleed and/or replace fluid in the brake system. |
| MAST5017 |
Test brake fluid for contamination. |
| MAST5008 |
Remove, bench bleed, and reinstall master cylinder. |
| MAST5009 |
Diagnose poor stopping, pulling, or dragging concerns caused by malfunctions in the hydraulic system; determine needed action. |
| MAST5011 |
Replace brake lines, hoses, fittings, and supports. |
| MAST5012 |
Fabricate brake lines using proper material and flaring procedures. |
| MAST5014 |
Inspect, test, and/or replace components of brake warning light system. |
| Drum Brakes |
| MAST5019 |
Remove, clean, and inspect brake drum; measure brake drum diameter; determine serviceability. |
| MAST5020 |
Refinish brake drum and measure final drum diameter |
| MAST5021 |
Remove, clean, inspect, and/or replace brake shoes, springs, pins, clips, levers, adjusters/self-adjusters, other related brake hardware, and backing support plates; lubricate and reassemble. |
| MAST5022 |
Inspect wheel cylinders for leaks and proper operation |
| MAST5023 |
Pre-adjust brake shoes and parking brake |
| MAST5018 |
Diagnose poor stopping, noise, vibration, pulling, grabbing, dragging, or pedal pulsation concerns; determine needed action. |
| Disc Brakes |
| MAST5025 |
Remove and clean caliper assembly; inspect for leaks, damage, and wear; determine needed action. |
| MAST5026 |
Inspect caliper mounting and slides/pins for proper operation, wear, and damage; determine needed action. |
| MAST5027 |
Remove, inspect, and/or replace brake pads and retaining hardware; determine needed action. |
| MAST5028 |
Lubricate and reinstall caliper, brake pads, and related hardware; seat brake pads against rotor; inspect for leaks. |
| MAST5029 |
Clean and inspect rotor and mounting surface; measure rotor thickness, thickness variation, and lateral runout; determine needed action. |
| MAST5030 |
Remove and reinstall/replace rotor. |
| MAST5031 |
Refinish rotor on vehicle |
| MAST5032 |
Refinish rotor off vehicle |
| MAST5033 |
Retract and readjust caliper piston on an integrated parking brake system. |
| MAST5035 |
Describe importance of operating vehicle to burnish/break-in replacement brake pads according to manufacturer's recommendation. |
| MAST5024 |
Diagnose poor stopping, noise, vibration, pulling, grabbing, dragging, or pulsation concerns; determine needed action. |
| Power-Assist Units |
| MAST5036 |
Check brake pedal travel with and without engine running to verify proper power booster operation. |
| MAST5037 |
Identify components of the brake power assist system (vacuum/hydraulic/electric). |
| MAST5038 |
Inspect vacuum-type power booster unit for leaks |
| MAST5039 |
Inspect and test hydraulically assisted power brake system for leaks and proper operation |
| MAST5059 |
Inspect electric power booster unit |
| Related Systems (i.e., Wheel Bearings, Parking Brakes, Electrical) |
| MAST5042 |
Remove, clean, inspect, repack/replace, and install wheel bearings; remove and install bearing races; replace seals; install hub and adjust bearings. |
| MAST5043 |
Check parking brake system components for wear, binding, and corrosion; clean, lubricate, adjust and/or replace as needed. |
| MAST5044 |
Check parking brake operation (including electric parking brakes) |
| MAST5045 |
Check operation of brake stop light system. |
| MAST5056 |
Inspect and replace wheel studs. |
| MAST5047 |
Remove, reinstall, and/or replace sealed wheel bearing assembly. |
| MAST5041 |
Diagnose wheel bearing noises, wheel shimmy, and vibration concerns; determine needed action. |
| Electronic Brake Control Systems: Antilock Brake (ABS), Traction Control (TCS), and Electronic Stability Control (ESC) Systems |
| MAST5048 |
Identify and inspect electronic brake control system components and describe function (ABS, TCS, ESC); determine needed action. |
| MAST5049 |
Describe the operation of a regenerative braking system. |
| MAST5053 |
Bleed the electronic brake control system hydraulic circuits. |
| MAST5050 |
Diagnose poor stopping, wheel lock-up, abnormal pedal feel, unwanted application, and noise concerns associated with the electronic brake control system; determine needed action. |
| MAST5051 |
Diagnose electronic brake control system electronic control(s) and components by retrieving diagnostic trouble codes and/or using recommended test equipment |
| MAST5052 |
Depressurize high-pressure components of an electronic brake control system. |
| MAST5054 |
Test, diagnose, and service electronic brake control system speed sensors (digital and analog), toothed ring (tone wheel), and circuits using a graphing multimeter (GMM)/digital storage oscilloscope (DSO) (includes output signal, resistance, shorts to voltage/ground, and frequency data). |
| MAST5055 |
Diagnose electronic brake control system braking concerns caused by vehicle modifications (tire size, curb height, final drive ratio, etc.). |