DTC Troubleshooting: U3006-16
DTC U3006-16: Power Source Failure for ECU (Low Voltage)

DTC Description
DTC
Freeze Frame
U3006-16 Power Source Failure for ECU (Low 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.

?4.
Start the engine, then wait for 10 seconds or more.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
U3006-16 Power Source Failure for ECU (Low Voltage)
   

Is DTC U3006-16 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 and note the parameter(s) below with the HDS.
Signal
Current conditions
Values
Unit
BATTERY VOLTAGE
   

Is 9.5 V or more indicated?

     
YES
     
     
     
Check the 12 volt battery terminal, then check for loose terminals between the battery and the VSA modulator-control unit 46P connector.?
     
NO
     
     
     
Go to step 3.
3.
PGM-FI system DTCs check:

PGM-FI system DTCs check
?1.
Check for PGM-FI system DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
     

Are any DTCs indicated?

     
YES
     
     
     
Go to indicated DTCs troubleshooting. After all PGM-FI system DTC's have been repaired, return to VSA and clear this code.?
     
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.?