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.
PCM Reset: Procedure
- HDS - Connect
1. Turn the vehicle to the ON mode, but do not start the engine. 2. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
3. Make sure the HDS communicates with the PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting - Refer to: DLC Circuit Troubleshooting (2014 2015), or DLC Circuit Troubleshooting(Without CAN Gateway) (2016), or DLC Circuit Troubleshooting(With CAN Gateway) (2016), or DLC Circuit Troubleshooting (2017 2018), or DLC Circuit Troubleshooting (2017 2018), or DLC Circuit Troubleshooting (2019 2020)
.
- PCM - Reset
1. Select the PGM-FI system with the HDS. 2. Reset the PCM with the HDS while the engine is stopped.
3. Turn the vehicle to the OFF (LOCK) mode.
4. Turn the vehicle to the ON mode, and wait 30 seconds.
5. Turn the vehicle to the OFF (LOCK) mode, and disconnect the HDS from the DLC.
Fuel and Emissions Systems Learning Procedure
- PCM - Idle Learn
NO RELATED
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.