Detect Electrical Faults Before Car Failure

Cost Savings

Checklist Tasks

• Test battery voltage after 30 minutes off to detect current drains.
• Clean any corrosion from battery terminals to ensure solid connections.
• Check for loose or frayed ground wires at chassis and engine.
• Inspect fuse box for melted or discolored fuses indicating circuit overload.
• Test alternator output under load to verify reliable charging.
• Inspect serpentine belt for cracks and proper tension.
• Check starter relay and solenoid for signs of heat damage.
• Scan for stored DTCs to uncover hidden faults.
• Test all exterior and interior lights for circuit issues.
• Verify power windows and locks to detect voltage drops.
• Check for moisture in cabin fuse box to ward off corrosion.
• Inspect wiring harnesses near moving parts for insulation wear.