DTC U3000-49: ECU Internal Circuit Failure
NOTE: Before you troubleshoot, review the general troubleshooting information .
| DTC Description | DTC | Freeze Frame |
|---|---|---|
| U3000-49 ECU Internal Circuit Failure |
- 1. Problem verification:
1. Turn the vehicle to the ON mode.
2. Clear the DTC with the HDS.
3. Turn the vehicle to the OFF (LOCK) mode, then start the engine.
4. Test-drive the vehicle at 25 mph (40 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
5. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame U3000-49 ECU Internal Circuit Failure Is DTC U3000-49 indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting . If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.
- 2. VSA modulator-control unit check (update):
1. Update the VSA modulator-control unit if it does not have the latest software .
2. Turn the vehicle to the OFF (LOCK) mode, then start the engine.
3. Test-drive the vehicle at 25 mph (40 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
4. Check for DTCs with the HDS.
Is DTC U3000-49 indicated?
YES
Check for loose terminals and poor connections in the VSA modulator-control unit 38P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit .
NO
Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.