Yamaha 2016 Grizzly yf700gg, Руководство по обслуживанию, Страница: 428 / 474

EPS (ELECTRIC POWER STEERING) SYSTEM (for EPS models)
9-73
EBS30291
TROUBLESHOOTING DETAILS (EPS SYSTEM)
TIP
The malfunction history is stored even if the main switch is turned to “ ” (off), therefore, be sure to
erase the history (present and past malfunction signaling modes) after repairing the cause of the EPS
system malfunction. The malfunction history must be erased in the diagnostic mode. Refer to “DIAG-
NOSTIC MODE” on page 9-70.
Fault code No. 11, 13, 15, 16
53 EPS control unit Battery voltage has dropped.
• Faulty battery.
• Malfunction in the
charging system.
Refer to “CHARGING
SYSTEM” on page 9-11.
• Malfunction in EPS control
unit.
54 EPS control unit
Relay contacts in the EPS control unit
are welded together. Malfunction in EPS control
unit.
55 EPS control unit
Battery voltage has increased.
Abnormality exists between the EPS
and the ECU.
• Malfunction in the
charging system.
Refer to “CHARGING
SYSTEM” on page 9-11.
• Malfunction in EPS control
unit.
Fault code
No.
Item Symptom
Probable cause of mal-
function
Fault code No. 11, 13,
15, 16 Symptom EPS torque sensor: no normal signals are received from the
EPS torque sensor.
Order Item/components and probable cause Check or maintenance job Reinstatement
method
1 Connections
• EPS torque sensor 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 torque sen-
sor lead. • Replace if there is an open or short
circuit.
• Between EPS torque sensor cou-
pler and EPS control unit coupler.
white–white
red–red
green–green
black–black
3 Defective EPS torque sensor. • Replace if defective.
Refer to “CHECKING THE EPS
TORQUE SENSOR (for EPS mod-
els)” on page 9-98.
4 Malfunction in EPS control unit. Replace the EPS control unit.