Honda Accord 2008 Manual page 623

07/11/02 09:15:18 61TA0000_110_0304
VTEC/VTC
DTC Troubleshooting (cont'd)
20. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P2647 indicated?
YES − Check for poor connections or loose
terminals at the rocker arm oil pressure switch, the
rocker arm oil control solenoid, and the ECM/PCM,
then go to step 1.
−
NO Go to step 21.
21. Monitor the OBD STATUS for DTC P2647 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 20,
go to the indicated DTC's troubleshooting.
−
NO If the screen indicates FAILED, go to step 1
and recheck. If the screen indicates NOT
COMPLETED, keep idling until a result comes on.
22. Reconnect all connectors.
23. Update the ECM/PCM if it does not have the latest
software (see page 11-231), or substitute a known-
good ECM/PCM (see page 11-7).
24. Start the engine, and let it idle.
11-304
25. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P2647 indicated?
YES − Check for poor connections or loose
terminals at the rocker arm oil pressure switch, the
rocker arm oil control solenoid, and the ECM/PCM.
If the ECM/PCM was updated, substitute a known-
good ECM/PCM (see page 11-7), then go to step 24.
If the ECM/PCM was substituted, go to step 1.
NO − Go to step 26.
26. Monitor the OBD STATUS for DTC P2647 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 page 11-232). If any other Temporary DTCs or
DTCs were indicated in step 25, go to the indicated
DTC's troubleshooting.
NO − If the screen indicates FAILED, check for poor
connections or loose terminals at the rocker arm oil
pressure switch and the ECM/PCM. If the ECM/PCM
was updated, substitute a known-good ECM/PCM
(see page 11-7), then go to step 24. If the ECM/PCM
was substituted, go to step 1. If the screen indicates
NOT COMPLETED, keep idling until a result comes
on.