Honda Element. Manual - part 805

14. Check the engine oil pressure (see OIL PRESSURE TEST ). 

Is the engine oil pressure OK?  

YES -Replace the rocker arm oil control solenoid (see ROCKER ARM OIL CONTROL VALVE 
REMOVAL/INSTALLATION ), then go to step 19. 

NO -Repair the cause of the low oil pressure, then replace the rocker arm oil control solenoid (see 
ROCKER ARM OIL CONTROL VALVE REMOVAL/INSTALLATION ), then go to step 19. 

15. Turn the ignition switch OFF.  

16. Jump the SCS line with the HDS.  

17. Disconnect ECM/PCM connector B (24P).  

18. Check for continuity between ECM/PCM connector terminal B11 and body ground. 

Fig. 15: Checking Continuity Between ECM/PCM Connector Terminal B11 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES -Repair short in the wire between the ECM/PCM (B11) and the rocker arm oil pressure switch, then 
go to step 19. 

NO -Go to step 26. 

19. Reconnect the rocker arm oil pressure switch 2P connector.  

20. Turn the ignition switch ON (II).  

21. Reset the ECM/PCM with the HDS.  

22. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).  

23. Do the VTEC TEST in the INSPECTION MENU with the HDS.  

24. Check for Temporary DTCs or DTCs with the HDS. 

Is DTC P2646 indicated?  

 

2007 Honda Element EX 

2007-2008 ENGINE PERFORMANCE VTEC/VTC - Element

  

YES -Check for poor connections or loose terminals at the rocker arm oil pressure switch, the rocker arm 
oil control solenoid, and the ECM/PCM, then go to step 1. 

NO -Go to step 25. 

25. Monitor the OBD STATUS for DTC P2646 in the DTCs MENU with the HDS. 

Does the screen indicate PASSED?  

YES -Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 24, go 
to the indicated DTCs troubleshooting. 

NO -If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil 
pressure switch, the rocker arm oil control solenoid, and the ECM/PCM, then go to step 1. If the screen 
indicates NOT COMPLETED, go to step 23. 

26. Reconnect all connectors.  

27. Update the ECM/PCM if it does not have the latest software (see UPDATING THE ECM/PCM ), or 

substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ).  

28. Do the VTEC TEST in the INSPECTION MENU with the HDS.  

29. Check for Temporary DTCs or DTCs with the HDS. 

Is DTC P2646 indicated?  

YES -Check for poor connections or loose terminals at the rocker arm oil pressure switch, the rocker arm 
oil control solenoid, and the ECM/PCM, then go to step 1. If the ECM/PCM was updated, substitute a 
known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ), then go to step 28. If the 
ECM/PCM was substituted, go to step 1. 

NO -Go to step 30. 

30. Monitor the OBD STATUS for DTC P2646 in the DTCs MENU with the HDS. 

Does the screen indicate PASSED?  

YES -If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, 
replace the original ECM/PCM (see ECM/PCM REPLACEMENT ). If any other Temporary DTCs or 
DTCs were indicated in step 29, go to the indicated DTCs troubleshooting. 

NO -If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil 
pressure switch, the rocker arm oil control solenoid, and the ECM/PCM. If the ECM/PCM was updated, 
substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ), then go to step 28. If 
the ECM/PCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, go to step 28. 

DTC P2647: ROCKER ARM OIL PRESSURE SWITCH CIRCUIT HIGH VOLTAGE 

 

2007 Honda Element EX 

2007-2008 ENGINE PERFORMANCE VTEC/VTC - Element

  

1. Check the engine oil level. 

Is the engine oil level OK?  

YES -Go to step 2. 

NO -Adjust the engine oil to the proper level, then go to step 14. 

2. Turn the ignition switch ON (II).  

3. Clear the DTC with the HDS.  

4. Do the VTEC TEST in the INSPECTION MENU with the HDS. 

Is the result OK?  

YES -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at 
the rocker arm oil pressure switch and the ECM/PCM. 

NO -Go to step 5. 

5. Check the result of step 4. 



VTEC Switch Failure  



VTEC Switch Open  



VTEC Switch SIG Line Open  



VTEC Switch GND Line Open  

Is the test result any of the above?  

YES -Go to step 6. 

NO -Check for poor connections or loose terminals at the rocker arm oil pressure switch. If it is OK, 
replace the rocker arm oil control valve (see ROCKER ARM OIL CONTROL VALVE 
REMOVAL/INSTALLATION ), then go to step 14. 

6. Turn the ignition switch OFF.  

7. Disconnect the rocker arm oil pressure switch 2P connector.  

8. At the switch side, check for continuity between rocker arm oil pressure switch 2P connector terminals 

No. 1 and No. 2. 

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, and 
review the general troubleshooting information (see GENERAL 
TROUBLESHOOTING INFORMATION ).

 

2007 Honda Element EX 

2007-2008 ENGINE PERFORMANCE VTEC/VTC - Element

  

Fig. 16: Checking Continuity Between Rocker Arm Oil Pressure Switch 2P Connector Terminals 
No. 1 And 2 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES -Go to step 9. 

NO -Replace the rocker arm oil pressure switch (see ROCKER ARM OIL PRESSURE SWITCH 
REMOVAL/INSTALLATION ), then go to step 13. 

9. Turn the ignition switch ON (II).  

10. Measure voltage between rocker arm oil pressure switch 2P connector terminal No. 1 and body ground. 

Fig. 17: Measuring Voltage Between Rocker Arm Oil Pressure Switch 2P Connector Terminal No. 
1 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there battery voltage?  

YES -Repair open in the wire between the rocker arm oil pressure switch and G101, then go to step 13. 

NO -Go to step 11. 

11. Measure voltage between ECM/PCM connector terminal B11 and body ground. 

 

2007 Honda Element EX 

2007-2008 ENGINE PERFORMANCE VTEC/VTC - Element