Honda Accord 2008 Manual page 456

07/11/02 09:05:01 61TA0000_110_0137
DTC P050A: Cold Start Idle Air Control
System Performance Problem
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. Check for Temporary DTCs or DTCs with the HDS.
Are any T emporary DT Cs or DT Cs other than
P050A indicated?
−
YES Go to the indicated DTC's troubleshooting.
NO − Go to step 3.
3. Check for poor connections or blockage at the
intake air duct.
Is it OK ?
YES − Go to step 4.
NO − Reconnect or repair the intake air duct, then
go to step 20.
4. Check for damage at the air cleaner housing.
Is it OK ?
−
YES Go to step 5.
NO − Replace the air cleaner housing (see page
11-385), then go to step 20.
5. Check for dirt or debris in the air cleaner element.
Is it dirty?
YES − Replace the air cleaner element or remove
the debris (see page 11-386), then go to step 20.
−
NO Go to step 6.
6. Let the engine cool until the value of ECT SENSOR
1 is 122 °F (50 °C) or less.
7. Clear the DTC with the HDS.
8. Start the engine, and let it idle for 10 seconds or
more.
9. Monitor the OBD STATUS for DTC P050A in the
DTCs MENU with the HDS.
Does the screen indicate F AILED?
YES − Go to step 10.
−
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, go to step 6.
10. Do the ETCS TEST in the INSPECTION MENU with
the HDS.
Is the T HROT T LE ACT UAT OR CONT ROL
V ALV E normal?
−
YES Go to step 11.
NO − Replace the throttle body (see page 11-388),
then go to step 20.
11. 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.
ＴＡ０８ＡＥＡＫ７２１０００９０５０ＡＦＡＡＴ３０
(cont'd)
11-137