Honda Accord 2008 Manual page 653

07/11/02 09:17:08 61TA0000_110_0334
Idle Control System
DTC Troubleshooting (cont'd)
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 page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed at
3,000 rpm without load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle for at least 20 seconds.
4. Monitor the OBD STATUS for DTC P0507 in the
DTCs MENU with the HDS.
Does the screen indicate F AILED?
−
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 or NOT COMPLETED, 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?
− Repair or replace the leaking part(s), then go
YES
to step 6.
NO − Go to step 6.
11-334
6. Turn the ignition switch to ON (II).
7. Reset the ECM/PCM with the HDS.
8. Do the ECM/PCM idle learn procedure (see page
11-343).
9. Start the engine. Hold the engine speed at
3,000 rpm without load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle for at least 20 seconds.
10. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P0507 indicated?
YES − Go to step 12.
NO − Go to step 11.
11. Monitor the OBD STATUS for DTC P0507 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 10,
go to the indicated DTC's troubleshooting.
NO − If the screen indicates FAILED, go to step 12. If
the screen indicates EXECUTING, keep idling until
a result comes on. If the screen indicates OUT OF
CONDITION or NOT COMPLETED, recheck with
different load conditions (turn on the headlights,
blower motor, or A/C; change the gear position, etc.),
then go to step 9.
ＴＡ０８ＡＥＡＫ７２１０００９０５０７ＦＡＡＴ３０