No Parts Cannon: Universal Vehicle Diagnostic Checklist

Stop replacing parts based on a trouble code alone.

The ChazzTech No Parts Cannon Diagnostic Checklist gives you a repeatable, evidence-based process for diagnosing vehicle faults before ordering parts.

This five-page printable PDF helps you:

• Capture the customer’s concern and operating conditions

• Record scan results, DTCs, and freeze-frame data

• Map the input, network, control, circuit, and load

• Document voltage, resistance, current, and other test results

• Prove the failure before replacing a component

• Record the root cause and repair authorization

• Compare before-and-after results and verify the repair

Designed for automotive and diesel technicians, students, independent shops, and serious DIYers.

You receive an instant digital PDF download that can be printed whenever you need a fresh diagnostic worksheet.

Test first. Verify the failure. No parts cannon.

Personal-use license only. Redistribution or resale is prohibited. This is an educational diagnostic workflow and does not replace vehicle-specific service information, OEM procedures, specifications, or required safety precautions.