wsm STW37 Workshop Manual page 445

STW34, STW37, STW40, WSM
SELF DIAGNOSIS (INSTRUMENT PANEL)
Blinking
Blinking
Indicator
Time
Lamp
22
Bi-speed
Turn
18
ERROR DISPLAY ON LCD (CAN COMMUNICATION ERROR)
Display on LCD
1. Communication error
• CAN bus line is disconnected
2. No signal from bi-speed
E-20
3. Bi-speed controller (ECU) is
4. Instrument panel is damaged. Replace instrument panel.
5. Battery voltage below 7 V
Probable Cause and
Checking Procedure
1. Signal line terminal 6-a of
bi-speed controller from
front wheel angle sensor
voltage ≤ 0.2 or ≥ 4.9 V.
2. Front wheel angle sensor
is damaged.
3. Wiring harness is
disconnected (between
bi-speed controller and
front wheel angle sensor).
1. Signal line terminal 16-P of
bi-speed controller from
traveling speed sensor
voltage ≤ 2.19 V.
2. Traveling speed sensor is
damaged.
3. Wiring harness is
disconnected (between
bi-speed controller and
traveling speed sensor).
Probable Cause and
Checking Procedure
between bi-speed controller
(ECU) and Instrument panel
(ECU).
or short-circuited.
controller.
damaged.
Solution
Check or replace front wheel angle
sensor.
Check or replace wiring harness
between front wheel angle sensor
and bi-speed controller.
Check or replace traveling speed
sensor.
Check or replace wiring harness
between traveling speed sensor
and bi-speed controller.
Solution
Check or replace the communication
lines.
Measure the voltage of bi-speed
controller connector and instrument panel
connector.
Measure the input voltage at bi-speed
controller connector.
Replace bi-speed controller.
Recharge or replace battery.
9-S8
ELECTRICAL SYSTEM
Reference
Page
–
9-S17,
9-S22
9-S17,
9-S22
–
9-S17,
9-S18,
9-S21
9-S17,
9-S21
Reference
Page
9-S19,
9-S20,
9-S23
9-S20
9-S20
9-M19
G-29
9Y1211109ELS0001US0
KiSC issued 11, 2014 A
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