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.
Symptom Troubleshooting Index
When the vehicle has one of these symptoms, check for all systems diagnostic trouble codes (DTCs) with the HDS. If there is no DTC, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.
| Symptom | Diagnostic procedure | Also check for |
|---|---|---|
| HDS does not communicate with the ABS modulator-control unit or the vehicle | Troubleshoot the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING ). | |
| ABS indicator, brake system indicator (red), and brake system indicator (amber) do not come on |
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| ABS indicator, brake system indicator (red), and brake system indicator (amber) do not go off |
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Use the Manual With the Right Hardware
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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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