DTC Troubleshooting: 64

DTC 64:  Battery Voltage is Excessively Low (Fail-safe Relay Contact Failure and Motor Voltage Fall Off)

1.Clear the DTC.

2.Start the engine.

Does the EPS indicator come on?

YES - Go to 3.

NO - The system is OK at this time.n

3.Stop the engine, and verify the DTC.

Is DTC 64 indicated?

YES - Go to 4.

NO - Perform the appropriate troubleshooting for the code indicated.n

4.Check the No. 2 EPS MOTOR (40 A) fuse in the under-hood fuse/relay box, and reinstall the fuse if it is ok.

Is the fuse OK?

YES - Go to 5.

NO - Replace the fuse and recheck.n

5.Disconnect the negative cable from the battery.

6.Disconnect the EPS control unit connector A (4P).

7.Reconnect the negative cable to the battery.

8.Measure the voltage between the EPS control unit connector A (4P) terminal No. 2 and body ground.


Is there battery voltage?

YES - Check for loose EPS control unit connectors. If necessary, substitute a known-good  EPS control unit and recheck.n

NO - Repair open in the WHT/BLU wire between the No. 2 EPS MOTOR (40 A) fuse and  EPS control unit.n