Manufacturer Code Charts: 30

EPS DTC Troubleshooting: 30

DTC 30: Submicrocomputer

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0).

4. Start the engine.

5. Wait at least 10 seconds.

Does the EPS indicator come on?
YES - Go to step 6.

NO - Check for loose terminals or poor connections. If the connections are good, the system is OK at this time.


6. Check for DTCs with the HDS.

Is DTC 30 indicated?
YES - Check for loose terminals in the EPS control unit connectors. If necessary, substitute a known-good EPS control unit and recheck.

NO - Do the appropriate troubleshooting for the code indicated.