DTC Troubleshooting: U3003-17
DTC U3003-17: Electric Parking Brake Control Unit Power Source Circuit (+B) High Voltage
NOTE: Before you troubleshoot, review the general troubleshooting information.

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

1.
Problem verification:

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.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
U3003-17 Electric Parking 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.
VSA modulator-control unit check:

VSA modulator-control unit check
?1.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
BATTERY VOLTAGE
More than 16.5
V
    

Do the current condition(s) match the threshold?

     
YES
     
     
     
     
NO
     
     
     
Check for loose terminals and poor connections in the VSA modulator-control unit 46P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit.?