Idle Control System: Diagnosis Honda Element I

DTC Troubleshooting

DTC INDEX

Note. If DTC P0511 is stored at the same time as DTC P0506, troubleshoot DTC P0511 first, then recheck for DTC P0506. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

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. Check under these DATA LIST parameter conditions with the HDS: ECT SENSOR above 158°F (70°C) IAT SENSOR above 32°F (0°C) VSS is 0 mph (0 km/h) FSS is CLOSED ST FUEL TRIM between 0.69 and 1.47
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 16 . If it is EXECUTING, keep the engine idling until a result comes on. If the screen indicates OUT OF CONDITION, recheck with a different load condition (electrical, A/C, gear position, etc.), then go to 3 .
6. Clear the DTC with the HDS.
7. Do the IACV TEST in the INSPECTION MENU with the HDS. Is the result OK? YES - Go to step 8. NO - Go to step 18 .
8. 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 TEST»(ref-220574-S12447911802006022000000) ), and also check for damage to the air cleaner element (see «AIR CLEANER REMOVAL/INSTALLATION»(ref-220574-S38222144532006022000000) ), then go to step 10 . If there is damage in the throttle bore, go to step 9. NO - Check the A/C system or power steering system, then go to step 26 .
9. Replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-220574-S07939558072006022000000) ).
10. Reset the ECM/PCM with the HDS.
11. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-220572-S08440202922006022000000) ).
12. 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.
13. Check under these DATA LIST parameter conditions with the HDS: ECT SENSOR 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 and 1.47 FSS is CLOSED
14. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P0506 is indicated, go to step 14 and recheck. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - Go to step 15.
15. Monitor the OBD STATUS for DTC P0506 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete. NO - If the screen indicates FAILED, go to step 1 and recheck. If the screen indicates EXECUTING, let the engine idle until a result comes on. If the screen indicates OUT OF CONDITION, go to 13 and recheck.
16. Remove the intake air duct from the throttle body.
17. 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 TEST»(ref-220574-S12447911802006022000000) ), and also check for damage to the air cleaner element (see «AIR CLEANER REMOVAL/INSTALLATION»(ref-220574-S38222144532006022000000) ), then go to step 10 . If there is damage in the throttle bore, go to 9 . NO - Go to step 26 .
18. Turn the ignition switch OFF.
19. Replace the IAC valve (see «THROTTLE BODY DISASSEMBLY/REASSEMBLY»(ref-220574-S10400224552006022000000) ).
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»(ref-220572-S08440202922006022000000) ).
23. 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.
24. Check under these DATA LIST parameter conditions with the HDS: ECT SENSOR above 158°F (70°C) IAT SENSOR above 32°F (0°C) VSS is 0 mph (0 km/h) FSS is CLOSED ST FUEL TRIM between 0.69 and 1.47
25. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P0506 is indicated, check for poor connections or loose terminals at the IAC valve and the ECM/PCM, then go to step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - Go to step 27 .
26. Recheck with different load conditions (turn on the headlights, blower motor, rear window defogger and/or A/C, changing the gear position, etc.)
27. Monitor the OBD STATUS for DTC P0506 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the IAC valve and the ECM/PCM, then go to step 1 . If the screen indicates EXECUTING, keep the engine idling until a result comes on. If the screen indicates OUT OF CONDITION, go to 26 and recheck.

Note. If DTC P0511 is stored at the same time as DTC P0507, troubleshoot DTC P0511 first, then recheck for DTC P0507. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

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. Check under these DATA LIST parameter conditions with the HDS: ECT SENSOR above 158°F (70°C) IAT SENSOR above 32°F (0°C) VSS is 0 mph (0 km/h) FSS is CLOSED ST FUEL TRIM between 0.69 and 1.47
5. Monitor the OBD STATUS for DTC P0507 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES - Go to step 6. NO - If the screen indicates PASSED, intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the IAC valve and the ECM/PCM. If the screen indicates EXECUTING, keep the engine idling until a result comes on. If the screen indicates OUT OF CONDITION, recheck with a different load condition (electrical, A/C, gear position, etc.), then go to step 3 .
6. Clear the DTC with the HDS.
7. Do the IACV TEST in the INSPECTION MENU with the HDS. Is the result OK? YES - Check these parts for vacuum leaks, then go to step 8: PCV valve PCV hose EVAP canister purge valve Throttle body Intake manifold Brake booster hose Intake air bypass control thermal valve NO - Go to step 8.
8. Turn the ignition switch OFF.
9. Replace the IAC valve (see «THROTTLE BODY DISASSEMBLY/REASSEMBLY»(ref-220574-S10400224552006022000000) ).
10. Turn the ignition switch ON (II).
11. Reset the ECM/PCM with the HDS.
12. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-220572-S08440202922006022000000) ).
13. 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.
14. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P0507 is indicated, check for poor connections or loose terminals at the IAC valve and the ECM/PCM, then go to step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - Go to step 15.
15. Monitor the OBD STATUS for DTC P0507 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the IAC valve and the ECM/PCM, then go to step 1 . If the screen indicates EXECUTING, keep the engine idling until a result comes on. If the screen indicates OUT OF CONDITION, recheck with a different load condition (electrical, A/C, gear position, etc.), then go to step 13 .

Idle Speed Inspection

Note. Leave the idle air control (IAC) valve connected. Before checking the idle speed, check these items: The malfunction indicator lamp (MIL) has not been reported on. Ignition timing Spark plugs Air cleaner PCV system Pull the parking brake lever up.

Scheme 213

1. Disconnect the evaporative emission (EVAP) canister purge valve connector.
2. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
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. Check the idle speed without load conditions: headlights, blower fan, radiator fan, and air conditioner off. IDLE SPEED SPECIFICATIONS (WITHOUT LOAD) M/T 700+/-50 RPM A/T 700+/-50 RPM (in Park or neutral)
5. Let the engine idle for 1 minute with a high electrical load (A/C switch on, temperature set to MAX cool, blower fan on high, rear window defogger on, and headlights on high beam). IDLE SPEED SPECIFICATIONS (WITH LOAD) M/T 720+/-50 RPM A/T 720+/-50 RPM (in Park or neutral) NOTE: If the idle speed is not within specification, do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-220572-S08440202922006022000000) ). If the idle is still out of specification, go to the symptom troubleshooting.
6. Reconnect the EVAP canister purge valve connector.