Honda Accord 2008 Manual page 458

07/11/02 09:05:02 61TA0000_110_0139
DTC P050B: Cold Start Ignition Timing
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
P050B 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 25.
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 25.
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 25.
−
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 P050B 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. Inspect the ignition timing (see page 4-20).
Is the ignition timing OK ?
YES − Go to step 12.
−
NO Go to step 11.
11. Check for damage at the CKP sensor (see page
11-226) and the CKP sensor pulser plate (see page
7-31).
Is the CK P sensor and/ or the CK P sensor pulser
plate damaged?
YES − Replace the CKP sensor (see page 11-226)
and/or the CKP sensor pulser plate (see page 7-31),
then go to step 6.
NO − Go to step 32.
ＴＡ０８ＡＥＡＫ７２１０００９０５０ＢＦＡＡＴ３０
(cont'd)
11-139