HDS does not communicate with the EPS control unit or the vehicle

Troubleshoot the DLC circuit: R20A3 engine model, K24Z3 engine model

EPS indicator does not come on

Symptom Troubleshooting

EPS indicator does not go off, and no DTCs are stored

Symptom Troubleshooting

EPS indicator is not on, no DTCs are stored, but there is no power assist or power assist is down

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Check the EPS motor power wires between the EPS control unit and the EPS motor for a short to body ground. Repair as needed.

If the EPS motor power wires are OK, replace the steering gearbox (short in the EPS motor).

Check the power and body ground connections at the EPS control unit.