DTC P0034 (1.5 L Engine)

DTC P0034  : Turbocharger Bypass Control Solenoid Valve Circuit Low Voltage

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

DTC (PGM-FI)

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.

   -4. Turn the vehicle to the ON mode.

   -5. Do the ABV TEST in the INSPECTION MENU with the HDS.

   ABV TEST

   Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P0034 Turbocharger Bypass Control Solenoid Valve Circuit Low Voltage

   Is DTC P0034 indicated?

   YES 

   Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the turbocharger bypass control solenoid valve and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

2. Turbocharger bypass control solenoid valve internal circuit check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connector.

   Turbocharger bypass control solenoid valve 2P connector

   -3. At the solenoid valve side, measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Turbocharger bypass control solenoid valve 2P connector: disconnected
   Test point 1	Turbocharger bypass control solenoid valve 2P connector (male terminals) No. 1 (solenoid valve side):
   Test point 2	Turbocharger bypass control solenoid valve 2P connector (male terminals) No. 2 (solenoid valve side):

   Courtesy of HONDA, U.S.A., INC.

   Is there about 30-34 Ω at room temperature?

   YES 

   Go to step 3.

   NO 

   Replace the turbocharger bypass control solenoid valve .

3. Fuse check

   -1. Check the following fuse.

   Fuse	No. D21 (10 A)
   Location	Under-dash fuse/relay box

   Is the fuse OK?

   YES 

   Go to step 4.

   NO 

   Repair a short in the IG1 ACG/IG1 (ACG)/IG1 (ABV) wire between the turbocharger bypass control solenoid valve and the No. D21 (10 A) fuse. Also replace the No. D21 (10 A) fuse.

4. Open wire check (IG1 ACG/IG1 (ACG)/IG1 (ABV) line)

   -1. Turn the vehicle to the ON mode.

   -2. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   	Turbocharger bypass control solenoid valve 2P connector: disconnected
   Test point 1	Turbocharger bypass control solenoid valve 2P connector (female terminals) No. 2:
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there battery voltage?

   YES 

   Go to step 5.

   NO 

   Repair an open in the IG1 ACG/IG1 (ACG)/IG1 (ABV) wire between the turbocharger bypass control solenoid valve and the No. D21 (10 A) fuse in the under-dash fuse/relay box. If needed, replace the under-dash fuse/relay box .

5. Short wire check (ABV line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Jump the SCS line with the HDS, and wait more than 1 minute.

   -3. Disconnect the following connector.

   PCM connector E (80P)

   -4. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Turbocharger bypass control solenoid valve 2P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Turbocharger bypass control solenoid valve 2P connector (female terminals) No. 1:
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Repair a short in the ABV wire between the PCM (E79) and the turbocharger bypass control solenoid valve.

   NO 

   The ABV wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM .