DTC P0045 (1.5 L Engine)

DTC P0045  : Turbocharger Wastegate Control Actuator Circuit Malfunction

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. Start the engine. Hold the engine speed at 3, 000 rpm without load (CVT in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.

   -4. Select the Electric Waste Gate in the Function Test with the HDS.

   Electric Waste Gate

   Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P0045 Turbocharger Wastegate Control Actuator Circuit Malfunction

   Is DTC P0045 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 wastegate control actuator 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. Shorted wire check (WGMTR1 (+) 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 connectors.

   Turbocharger 5P connector

   PCM connector E (80P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Turbocharger 5P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Turbocharger 5P connector (female terminals) No. 5:
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Repair a short in the WGMTR1 (+) wire between the PCM (E26) and the turbocharger.

   NO 

   Go to step 3.

3. Shorted wire check (WGMTR2 (-) line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Turbocharger 5P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Turbocharger 5P 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 WGMTR2 (-) wire between the PCM (E25) and the turbocharger.

   NO 

   Go to step 4.

4. Open wire check (WGMTR1 (+) line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Turbocharger 5P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Turbocharger 5P connector (female terminals) No. 5:
   Test point 2	PCM connector E (80P) No. 26

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

   Is there continuity?

   YES 

   Go to step 5.

   NO 

   Repair an open in the WGMTR1 (+) wire between the PCM (E26) and the turbocharger.

5. Open wire check (WGMTR2 (-) line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Turbocharger 5P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Turbocharger 5P connector (female terminals) No. 1:
   Test point 2	PCM connector E (80P) No. 25

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

   Is there continuity?

   YES 

   Go to step 6.

   NO 

   Repair an open in the WGMTR2 (-) wire between the PCM (E25) and the turbocharger.

6. Shorted wire check (WGMTR1 (+) line to WGMTR2 (-) line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector E (80P): disconnected
   	Turbocharger 5P connector: disconnected
   Test point 1	Turbocharger 5P connector (female terminals) No. 1:
   Test point 2	Turbocharger 5P connector (female terminals) No. 5:

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

   Is there continuity?

   YES 

   Repair a short in the WGMTR1 (+) wire to the WGMTR2 (-) wire between the PCM (E25, E26) and the turbocharger.

   NO 

   Go to step 7.

7. Turbocharger wastegate control actuator internal circuit check (short in wires)

   -1. At the turbocharger wastegate control actuator side, measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector E (80P): disconnected
   	Turbocharger 5P connector: disconnected
   Test point 1	Turbocharger 5P connector (male terminals) No. 1 (actuator side):
   Test point 2	Turbocharger 5P connector (male terminals) No. 5 (actuator side):

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

   Is there about 1.2 Ω-1.0 kΩ?

   YES 

   Go to step 8.

   NO 

   Replace the turbocharger .

8. Turbocharger wastegate control actuator internal circuit check (short to ground)

   -1. At the turbocharger side, check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector E (80P): disconnected
   	Turbocharger 5P connector: disconnected
   Test point 1	Turbocharger 5P connector (male terminals) No. 1 (actuator side):
   	Turbocharger 5P connector (male terminals) No. 5 (actuator side):
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Replace the turbocharger .

   NO 

   The turbocharger wastegate control actuator internal circuit is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM .