Honda Element. Manual — part 587

DTC P0506: IDLE CONTROL SYSTEM RPM LOWER THAN EXPECTED

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator

fan comes on, then let it idle.

4. Confirm under these DATA LIST parameter conditions with the HDS:



ECT SENSOR 1 above 158°F (70°C)



IAT SENSOR above 32°F (0°C)



VSS is 0 mph (0 km/h)



ST FUEL TRIM between 0.69-1.47



FSS is CLOSED

5. Monitor the OBD STATUS for DTC P0506 in the DTCs MENU with the HDS.

Does the screen indicate FAILED?

YES - Go to step 6.

NO - If the screen indicates PASSED, go to step 15. If the screen indicates EXECUTING, keep idling
until a result comes on. If the screen indicates OUT OF CONDITION, go to step 4 and recheck.

6. Remove the intake air duct from the throttle body (see THROTTLE BODY

REMOVAL/INSTALLATION ).

7. Check for dirt, carbon, or damage in the throttle bore.

Is there dirt, carbon, or damage in the throttle bore?

YES - If there is dirt or carbon, clean the throttle body (see THROTTLE BODY CLEANING ). Also
check for damage to the air cleaner element (see AIR CLEANER ELEMENT
INSPECTION/REPLACEMENT ), then go to step 9. If there is damage in the throttle bore, go to step
8.

NO - Check the A/C system or power steering system, then go to step 17.

8. Replace the throttle body (see THROTTLE BODY REMOVAL/INSTALLATION ).

9. Reset the ECM/PCM with the HDS.

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

11. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator

fan comes on, then let it idle.

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

2007-08 ENGINE PERFORMANCE Idle Control System - Element

12. Check under these DATA LIST parameter conditions with the HDS:



ECT SENSOR 1 above 158°F (70°C)



IAT SENSOR above 32°F (0°C)



VSS is 0 mph (0 km/h)



ST FUEL TRIM between 0.69-1.47



FSS is CLOSED

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

Is DTC P0506 indicated?

YES - Go to step 19.

NO - Go to step 14.

14. Monitor the OBD STATUS for DTC P0506 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 13, go
to the indicated DTCs troubleshooting.

NO - If the screen indicates FAILED, go to step 19. Check the A/C system and/or power steering system,
then go to step 1. If the screen indicates EXECUTING, keep idling until a result comes on. If the screen
indicates OUT OF CONDITION, go to step 11.

15. Remove the intake air duct from the throttle body (see THROTTLE BODY

REMOVAL/INSTALLATION ).

16. Check for dirt, carbon, or damage in the throttle bore.

Is there dirt, carbon, or damage in the throttle bore?

YES - If there is dirt or carbon, clean the throttle body (see THROTTLE BODY CLEANING ). Also
check for damage to the air cleaner element (see AIR CLEANER ELEMENT
INSPECTION/REPLACEMENT ), then go to step 9. If there is damage in the throttle bore, go to step
8.

NO - Go to step 17.

17. Recheck with different load conditions (turn on the headlights, blower motor, rear window defogger

and/or A/C, change the gear position, etc.).

18. Monitor the OBD STATUS for DTC P0506 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

2007 Honda Element EX

2007-08 ENGINE PERFORMANCE Idle Control System - Element

YES - Intermittent failure, the system is OK at this time.

NO - If the screen indicates FAILED, check the A/C system and/or power steering system, then go to step
1 and recheck. If the screen indicates EXECUTING, keep idling until a result comes on. If the screen
indicates OUT OF CONDITION, go to step 12.

19. 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 ).

20. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator

fan comes on, then let it idle.

21. Check under these DATA LIST parameter conditions with the HDS:



ECT SENSOR 1 above 158°F (70°C)



IAT SENSOR above 32°F (0°C)



VSS is 0 mph (0 km/h)



ST FUEL TRIM between 0.69-1.47



FSS is CLOSED

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

Is DTC P0506 indicated?

YES - Check for poor connections or loose terminals at the throttle body 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 20. If the ECM/PCM was substituted, go to step 1.

NO - Go to step 23.

23. Monitor the OBD STATUS for DTC P0506 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 22, go to the indicated DTCs troubleshooting.

NO - If the screen indicates FAILED, check for poor connections or loose terminals at the throttle body
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 20. If the ECM/PCM was substituted, go to step 1.
If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF
CONDITION, go to step 20.

DTC P0507: IDLE CONTROL SYSTEM RPM HIGHER THAN EXPECTED

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

2007-08 ENGINE PERFORMANCE Idle Control System - Element

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator

fan comes on, then let it idle.

4. Monitor the OBD STATUS for DTC P0507 in the DTCs MENU with the HDS.

Does the screen indicate FAILED?

YES - Go to step 5.

NO - If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the screen
indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF
CONDITION, recheck with different load conditions (electrical, A/C, gear position, etc.), then go to step
3.

5. Check for vacuum leaks at these parts:



PCV valve



PCV hose



EVAP canister purge valve



Throttle body



Intake manifold



Brake booster hose



Brake booster

Are there any leaks?

YES - Repair or replace the leaking part(s), then go to step 6.

NO - Go to step 6.

6. Turn the ignition switch ON (II).

7. Reset the ECM/PCM with the HDS.

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

9. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator

fan comes on, then let it idle.

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

Is DTC P0507 indicated?

YES - Go to step 12.

NO - Go to step 11.

2007 Honda Element EX

2007-08 ENGINE PERFORMANCE Idle Control System - Element