DTC Troubleshooting: U3003-17(Electric Servo Brake Control Unit)

DTC U3003-17  : Electric Servo Brake Control Unit Power Source Circuit (+B) High Voltage

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

DTC (Electric servo brake)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTCs with the HDS.

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

   -4. Wait for 10 seconds or more.

   -5. Check for DTCs with the HDS.

   DTC Description	DTC	Freeze Frame
   U3003-17 Electric Servo Brake Control Unit Power Source Circuit (+B) High Voltage

   Is DTC U3003-17 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. Electric powertrain system DTCs check

   -1. Check for electric powertrain system DTCs with the HDS.

   DTC Description	DTC	Pending DTC	Freeze Frame

   Are any DTCs indicated?

   YES 

   Go to indicated electric powertrain system troubleshooting .

   NO 

   Check for loose terminals and poor connections in the electric servo brake control unit 22P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the electric servo brake control unit/pedal feel simulator .