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.
Without Scantool
2008 Acura TSX L4-2.4LSECTION Without Scantool
Clear A/T DTCs Procedure
1. Connect the HDS to the DLC.
2. Turn the ignition switch to ON (II).
3. Clear the DTC(s) on the HDS screen.
4. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting.
PCM Reset Procedure
1. Reset the PCM with the HDS when the engine is stopped.
2. Turn the ignition switch to LOCK (0).
3. Turn the ignition switch to ON (II), and wait for 30 seconds.
4. Turn the ignition switch to LOCK (0), and disconnect the HDS from the DLC.
5. Do the PCM idle learn procedure.
1. Connect the HDS to the DLC.
2. Turn the ignition switch to ON (II).
3. Clear the DTC(s) on the HDS screen.
4. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting.
PCM Reset Procedure
1. Reset the PCM with the HDS when the engine is stopped.
2. Turn the ignition switch to LOCK (0).
3. Turn the ignition switch to ON (II), and wait for 30 seconds.
4. Turn the ignition switch to LOCK (0), and disconnect the HDS from the DLC.
5. Do the PCM idle learn procedure.
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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.