Honda Accord 2008 Manual page 616

07/11/02 09:14:26 61TA0000_110_0297
DTC P2646: Rocker Arm Oil Pressure Switch
A Circuit Low Voltage (PZEV model)
DTC P2647: Rocker Arm Oil Pressure Switch
A Circuit High Voltage (PZEV model)
Special Tools Required
• Pressure gauge adapter 07NAJ-P07010A
• A/T low pressure gauge w/panel 07406-0070301
• A/T pressure hose 07406-0020201
• A/T pressure hose, 2,210 mm 07MAJ-PY4011A
• A/T pressure hose, adapter 07MAJ-PY40120
• Oil pressure hose 07ZAJ-S5AA200
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Check the engine oil level.
Is the level OK ?
YES − Go to step 2.
NO − Adjust the engine oil level to the proper level,
then go to step 29.
2. Turn the ignition switch to ON (II).
3. Clear the DTC with the HDS.
4. Select the VTEC TEST in the INSPECTION MENU,
and do the VTEC TEST with the HDS.
Are V T ECIN-0 and V T ECEX -0 indicated?
YES − Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at rocker arm oil pressure switch A, rocker arm oil
control solenoid A, and the PCM.
NO − If the result is
• VTECIN-1: Go to step 5.
• VTECIN-3: Go to step 14.
• VTECIN-3 and VTECEX-3 indicated at the same
time: Check the oil passage between the engine
oil pressure switch and the rocker arm oil control
valve filter. If it is OK, go to step 14.
• VTECIN-2, VTECIN-4: Inspect the intake valve
side VTEC system. If it is OK, replace the rocker
arm oil control valve (see page 11-328), then go
to step 29.
• VTECEX-0: The exhaust valve side VTEC system
is OK at this time.
• VTECEX-1, 2, 3, 4: The exhaust valve side VTEC
system is faulty. Go to the troubleshooting for
P2651/P2652 (see page 11-315).
5. Turn the ignition switch to LOCK (0).
6. Disconnect the rocker arm oil pressure switch A 2P
connector.
ＴＡ０８ＡＥＪＫ７７１０００９２６４６ＦＡＡＴ００
(cont'd)
11-297