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.
Self-Diagnostic System: Notes
Teves-Mark IV Anti-Lock Brake System (ABS) is controlled and monitored by Controller Anti-Lock Brake (CAB). In addition to controlling ABS system, CAB has several useful diagnostic capabilities.
Fault messages are stored in memory until erased by a technician using Chrysler's Diagnostic Readout Box (DRB) or until erased automatically after 50 ignition cycles. Only fault which cannot be erased using DRB or after 50 ignition cycles is a CAB fault. CAB fault can only be erased by replacing CAB.
More than one fault message can be stored at a time. Number of fault messages stored is displayed by DRB. Number of ignition cycles since most recent fault was stored is also displayed.
Using DRB, most functions of CAB and ABS system can be accessed by technician for testing and diagnostic purposes.
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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.