DTC 39-01: EPS Control Unit Internal Circuit (Precharge Circuit)

NOTE: Before you troubleshoot, review the general troubleshooting information .

DTC (EPS)

• 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 vehicle to the ON mode.

  4. Wait 10 seconds or more.

  5. Check for DTCs with the HDS.

  DTC Description	DTC	Freeze Frame
  39-01 EPS Control Unit Internal Circuit (Precharge Circuit)

  Is DTC 39-01 indicated?

  YES 

  The failure is duplicated. Go to step 2.

  NO 

  Intermittent failure, the system is OK at this time. 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. EPS control unit check (update):

  1. Update the EPS control unit if it does not have the latest software.

  2. Clear the DTC with the HDS.

  3. Turn the vehicle to the OFF (LOCK) mode, then vehicle to the ON mode.

  4. Wait 10 seconds or more.

  5. Check for DTCs with the HDS.

  DTC Description	DTC	Freeze Frame
  39-01 EPS Control Unit Internal Circuit (Precharge Circuit)

  Is DTC 39-01 indicated?

  YES 

  Replace the EPS control unit .

  NO 

  Troubleshooting is complete.