Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Procedure: Introduction
Diagnostic test procedures are designed to detect system faults as quickly as possible. Body fault codes are accessed through CCD bus diagnostic connector. See Figure . Chrysler's Diagnostic Readout Box-II (DRB-II) is used to access information from CCD bus diagnostic connector.
A 1993 diagnostic program cartridge, DRB-II, body diagnostics cable, hand-held oil pressure gauge, jumper wires, and digital volt/ohmmeter will be needed for testing. Proceed to TEST 1A - IDENTIFYING VEHICLE EQUIPMENT & SYSTEM PROBLEMS .
Ensure self-diagnostic tests apply to vehicle being tested. When system problem is identified according to customer's complaint, perform diagnostic test indicated.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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