Troubleshooting - Honda Accord 2008 Manual

07/11/02 09:06:13 61TA0000_040_0051
Engine Mount Control System

Troubleshooting

Special Tools Required
Vacuum pump/gauge, 0 30 in.Hg
Snap-on YA4000A or equivalent, commercially
available
NOTE: Check the vacuum hoses and lines for damage
and proper connections before troubleshooting.
Follow this procedure if the engine vibrates excessively
when idling.
1. Check the idle speed (see page 11-342).
2. Raise the engine speed from idling to 2,000 rpm.
3. Check the MOUNT CTRL SOL in the PGM-FI DATA
LIST with the Honda Diagnostic System (HDS).
Is ON indicated at idling and OF F indicated at
2,000 rpm?
YES − Go to step 4.
NO − Update the engine control module (ECM)/
powertrain control module (PCM) if it does not
have the latest software (see page 11-231), or
substitute a known-good ECM/PCM (see page 11-7),
then recheck. If the engine mount control system
works properly, and the ECM/PCM was updated,
the troubleshooting is complete. If the ECM/PCM
was substituted, replace the original ECM/PCM
(see page 11-232).
4. Turn the ignition switch to LOCK (0).
5. Disconnect the engine mount control solenoid
valve 2P connector from the engine mount control
solenoid valve.
6. Turn the ignition switch to ON (II).
4-50
−
7. Measure the voltage between engine mount
control solenoid valve 2P connector terminal No. 2
and body ground.
ENGINE MOUNT CONTROL
SOLENOID VALVE 2P CONNECTOR
IG1
(BLK/YEL)
Wire side of female terminals
Is there battery voltage?
−
YES Go to step 8.
NO − Repair open in the wire between engine
mount control solenoid valve 2P connector
terminal No. 2 and No. 7 (15 A) fuse in the driver's
under-dash fuse/relay box.
8. Start the engine, and let it idle.
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