Substitute a known-good EPS control unit, and connect the all disconnected connectors. Start the engine. Does the EPS indicator come on? YES - Go to step 13. NO - Check for loose EPS control unit connectors. If necessary, replace the EPS control unit and retest. Stop the engine, and verify the DTC. Is DTC 43 indicated? YES - Check for loose EPS control unit connectors and motor connector. If necessary, substitute a known-good steering gearbox and recheck. NO - Perform the appropriate troubleshooting for the code indicated.

DTC 47: EPS Control Unit Internal Circuit (Power Relay) Clear the DTC. Start the engine. Does the EPS indicator come on? YES - Go to step 3. NO - The system is OK at this time. Stop the engine, and verify the DTC. Is DTC 47 indicated? YES - Check for loose EPS control unit connectors. If necessary, substitute a known-good EPS control unit and recheck. NO - Perform the appropriate troubleshooting for the code indicated.