Yamaha 2016 Grizzly yf700gg, Service Manual

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EPS (ELECTRIC POWER STEERING) SYSTEM (for EPS models)
9-75
Fault code No. 41, 42, 43, 45
Fault code No. 52
Fault code No. 53
Fault code No. 41, 42,
43, 45 Symptom EPS motor: no normal signals are received from the EPS motor.
Order Item/components and probable cause Check or maintenance job Reinstatement
method
1 Connections
• EPS motor coupler • Check the locking condition of the
coupler.
• Disconnect the coupler and check
the pins (bent or broken terminals
and locking condition of the pins).
• If there is a malfunction, connect
the coupler securely or replace the
wire harness.
Turning the main
switch to “
”
(off).
2 Open or short circuit in EPS motor lead. • Replace if there is an open or short
circuit.
• Between EPS motor and EPS con-
trol unit coupler.
red–red
black–black
3 Defective EPS motor. Replace if defective.
Refer to “CHECKING THE EPS MO-
TOR (for EPS models)” on page
9-98.
4 Malfunction in EPS control unit. Replace the EPS control unit.
Fault code No. 52 Symptom Relay contacts in the EPS control unit are welded together.
Order Item/components and probable cause Check or maintenance job Reinstatement
method
1 Malfunction in EPS control unit. Replace the EPS control unit. Turning the main
switch to “
”
(off).
Fault code No. 53 Symptom Battery voltage has dropped.
Order Item/components and probable cause Check or maintenance job Reinstatement
method
1 Faulty battery. Replace or charge the battery.
Refer to “CHECKING AND
CHARGING THE BATTERY” on
page 9-85. Turning the main
switch to “
”
(off).
2 Malfunction in rectifier/regulator or
charging system. Replace if defective.
Refer to “CHECKING THE RECTIFI-
ER/REGULATOR” on page 9-93.
3 Malfunction in EPS control unit. Replace the EPS control unit.