DTC U3006-17: Power Source Failure for ECU (High Voltage)

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

• 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 start the engine.

  4. Check for DTCs with the HDS.

  DTC Description	DTC	Freeze Frame
  U3006-17 Power Source Failure for ECU (High Voltage)

  Is DTC U3006-17 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:

  1. With the engine still running, check and note the parameter(s) below with the HDS.

  Signal	Current conditions
  	Values	Unit
  BATTERY VOLTAGE

  2. Using a voltmeter, measure and note the voltage across the 12 volt battery terminals.

  NOTE:  If the voltage is more than 15.1 V, troubleshoot the PGM-FI DTCs - Refer to: How to Troubleshoot the Fuel and Emissions SystemsHow to Troubleshoot the CVT System(CVT System) .

  3. Compare the voltage noted in step 2-1 to the voltage in step 2-2.

  Is the difference between the two voltage readings less than 3 V?

  YES 

  Check the 12 volt battery , and check for any PGM-FI DTCs - Refer to: How to Troubleshoot the Fuel and Emissions SystemsHow to Troubleshoot the CVT System(CVT System) .

  NO 

  Go to step 3.

• 3. VSA modulator-control unit check (update):

  1. Update the VSA modulator-control unit if it does not have the latest software .

  2. Turn the vehicle to the OFF (LOCK) mode, then start the engine.

  3. Check for DTCs with the HDS.

  Is DTC U3006-17 indicated?

  YES 

  Check for loose terminals and poor connections in the VSA modulator-control unit 38P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit .

  NO 

  Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.