ASE G1 Maintenance & Light Repair — Complete Study Guide
Master every knowledge area tested on the ASE G1 Maintenance & Light Repair exam. Each topic includes verified practice questions, key concepts, and official handbook references.
Engine Systems
16% of examEngine diagnostics, maintenance, and repair. Topics include: DTC retrieval, compression testing, cooling system diagnosis, timing belt service, and oil condition analysis.
Suspension & Steering
24% of examSuspension diagnostics, steering geometry, and alignment. Topics include: tire wear patterns (camber, toe, cupping), ball joint inspection, shock/strut diagnosis, EPS systems, and alignment angles.
Brakes
20% of examHydraulic brake systems, ABS, and disc/drum service. Topics include: pad/rotor inspection, brake fluid types (DOT 3/4/5), master cylinder diagnosis, proportioning valve function, and EPB service mode.
Electrical Systems
15% of examBattery, starter, alternator, and electronic diagnostics. Topics include: parasitic drain testing, voltage drop testing, CAN bus diagnosis, relay operation, and scan tool usage.
HVAC
7% of examAir conditioning and heating system service. Topics include: A/C performance testing, TXV operation, compressor diagnosis, R-134a PAG oil, R-12 to R-134a retrofit procedures, and blend door diagnosis.
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