Diagnostic Mode - Yamaha Grizzly550 User Manual

EPS (ELECTRIC POWER STEERING) SYSTEM (for
a. Main switch
b. EPS warning light (no malfunction detected)
c. EPS warning light (malfunction detected)
d. OFF
e. ON
EAS30270

DIAGNOSTIC MODE

Setting the diagnostic mode (present and past malfunctions)
1. Set the main switch to "ON".
2. Disconnect the EPS self-diagnosis signal connector "1".
3. Select the signaling mode by grounding the EPS self-diagnosis signal connector (male side) to the
EPS control unit "2" or disconnecting it from the unit as follows.
• Present malfunction signaling mode
Ground the EPS self-diagnosis signal connector within 5 seconds after setting the main switch to
"ON", and leave it grounded. The signaling mode is activated after 5 seconds.
• Past malfunction signaling mode
While the present malfunction mode is activated, briefly disconnect the EPS self-diagnosis signal
connector, ground it again, and leave it grounded. The signaling mode is activated after 5 seconds.
4. Set the main switch to "OFF" to cancel the diagnostic mode.
TIP
• The diagnostic mode can also be canceled by riding the vehicle at speeds above 2 km/h (1.2 mi/h).
• When the diagnostic mode is selected and during the initial lighting of the EPS warning light, the EPS
control unit does not receive input from the EPS self-diagnosis signal connector.
5. Connect the EPS self-diagnosis signal connector.
Identifying fault codes
When the diagnostic mode is activated, the fault codes determined by the fail-safe specifications are
signaled by the EPS warning light as follows.
e
d
a
g
f
b
g
f
c
h
9-66
YFM5FGP/YFM7FGP)
i
f. Off
g. Comes on.
h. Initial lighting: 2 seconds
i. Goes off.
1
2
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