wsm STW37 Workshop Manual page 444

STW34, STW37, STW40, WSM
FAIL SAFE SYSTEM
Blinking
Blinking
Indicator
Mode
Lamp
Slow
(Light up:
1.0 sec./
light off:
0.2 sec.)
Bi-speed
Turn
Quick
(Light up:
0.2 sec. /
light of:
0.2 sec.)
Quick
Mid PTO (Light up:
and 0.2 sec. /
Rear PTO light off:
0.2 sec.)
Bi-speed Quick
Turn, (Light up:
Mid PTO 0.2 sec. /
and light off:
Rear PTO 0.2 sec.)
Probable Cause and
Checking Procedure
1. Front wheel angle sensor
is damaged
2. Wiring harness of traveling
speed sensor is
disconnected
1. Traveling speed sensor is
damaged.
2. Wiring harness of front
wheel angle sensor is
disconnected.
1. Wiring of bi-speed turn
solenoid is disconnected.
2. Bi-speed turn solenoid is
damaged.
1. Wiring of PTO solenoid is
disconnected.
2. PTO solenoid is damaged
1. Wiring of bi-speed
solenoid is disconnected.
2. Bi-speed turn solenoid is
damaged
1. Wiring of PTO solenoid is
disconnected.
2. PTO solenoid is damaged. Measure resistance between PTO
9-S7
Solution
See Self Diagnosis.
Check or replace wiring harness
between bi-speed controller and
bi-speed turn solenoid.
Measure resistance between
bi-speed turn solenoid and GND.
Replace bi-speed turn valve.
Check or replace wiring harness
between bi-speed controller and
PTO solenoid.
Measure resistance between PTO
solenoid and GND
Replace bi-speed turn valve
Check or replace wiring harness
between bi-speed controller and
PTO solenoid
Measure resistance between
bi-speed turn solenoid and GND
Replace bi-speed turn valve
Check or replace wiring harness
between bi-speed controller and
PTO solenoid.
solenoid and GND
Replace bi-speed turn valve.
ELECTRICAL SYSTEM
Reference
Page
9-S17,
9-S18
–
9-S21
8-S16
–
–
8-S16
–
9-S21
8-S16
–
–
8-S16
KiSC issued 11, 2014 A