'61HN252' by American Honda Motor Co. - Page 473 of 540
http://services.honda.com/ServiceManual/SVC_MNL/61HN253/61HN2...
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3/9/2008 11:26 PM
[2005-2008] [TRX500 FA/FGA]
SELECTABLE 4WD SYSTEM
PROBLEM CODE 3: REAR VEHICLE
SPEED SENSOR (VSS)
· Before troubleshooting, check that the tire pres-
sure and tire size are correct.
1. Rear VSS Connector Inspection
Turn the ignition switch OFF.
Disconnect the rear VSS 3P (Yellow) connector.
Check the connector for loose contacts or cor-
'05, '06 shown:
roded terminals.
Is the connector in good condition?
NO
Loose or poorly connected rear VSS 3P
connector.
YES
GO TO STEP 2.
3P (YELLOW) CONNECTOR
2. Rear VSS Input Line Inspection
Turn the ignition switch ON.
REAR VSS CONNECTOR
Measure the voltage between the wire harness
(Viewed from the terminal side)
side rear VSS 3P (Yellow) connector terminal
and ground.
Connection: Black/orange (+) Green/yellow ()
Does the battery voltage exist?
NO
Open or short circuit in the Black/
orange wire or Green/yellow wire.
G/Y
Bl/O
YES
GO TO STEP 3.
3. Rear VSS Line Inspection
Check the Pink/green wire for continuity
Be careful not
between the ECM 21 P (Gray) and rear VSS 3P
to bend the
ECM CONNECTOR
(Yellow) connector terminals.
connector
(Viewed from the
terminals.
terminal side)
Is there continuity?
NO
Open circuit in the Pink/green wire
P/G
between the ECM connector and rear
VSS connector.
YES
GO TO STEP 4.
REAR VSS
P/G
CONNECTOR
(Viewed from the
terminal side)
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