Honda 2005-2008 RX500 FA Service Manual page 472

'61HN252' by American Honda Motor Co. - Page 472 of 540
[2005-2008] [TRX500 FA/FGA]
SELECTABLE 4WD SYSTEM
Be careful not
to bend the
connector
terminals.
23-6
1 of 1
4. Front VSS Line Short Circuit Inspection
Check the Pink/white wire for continuity between
the ECM 21P (Gray) connector terminal and
ground.
Check the Pink wire for continuity between the
front VSS 3P side (Black) connector terminal and
ground.
Is there continuity?
YES · Short circuit in the Pink/white wire
between the ECM connector and
front VSS connector.
· Short circuit in the Pink wire at the
front VSS.
NO GO TO STEP 5.
5. Front VSS Mechanical Inspection
Check the rear VSS for correct installation.
Remove the front VSS (page 17-14), and check
for any object on the sensor tip or ring gear sur-
face, also check for damage on the sensor tip.
Is it installed correctly?
NO Clean the front VSS and ring gear, cor-
rectly install the front VSS, or replace
the front VSS.
YES GO TO STEP 6.
6. Failure Reproduction
Interchange the front VSS 3P (Black) and rear
VSS 3P (Yellow) connector.
Turn the ignition switch OFF then ON.
Turn the 2WD/4WD select switch to 4WD.
Test-drive the vehicle above 4 mph for more
than 30 seconds and check that the 4WD indica-
tor blinks.
Does the 4WD indicator blink?
NO · Check for poor contact or loose con-
nection in wire harness.
· No problem (Temporary failure).
YES · If the indicator blinks 2 times,
recheck for poor contact or loose
connection in wire harness. If they
are OK, replace the ECM.
· If the indicator blinks 3 times, replace
the front VSS.
http://services.honda.com/ServiceManual/SVC_MNL/61HN253/61HN2...
P/W
SENSOR GUARD
3P (BLACK) CONNECTOR
'05, '06 shown:
3P (YELLOW) CONNECTOR
P
FRONT VSS
3/9/2008 11:26 PM