Speed Limit Applies At High Lifting Height Despite Not Being Loaded; Speed Limit Does Not Operate - Toyota 8FGU15 Repair Manual

8 TROUBLESHOOTING
Phenomenon on
Control type
vehicle
For vehicles with
travel and load
handling control:
Travel and load
Speed limit applies
handling control
at high lifting height
despite not being
loaded
For vehicles with
travel and load
handling control:
Travel and load
Despite being
handling control
loaded at high lifting
height the speed
limit does not oper-
ate.
Malfunction area
Checking method
and mode
▪ Load sensor
unit:
Sensor defect
▪ Load sensor line
(Power supply,
ON/OFF check with
signal, ground):
analyzer
Disconnection
fault (Harness,
connector)
Short or link fault
(Harness, con-
nector)
Check the setting
▪ Display setting:
content of the max-
Maximum speed
imum speed limiter,
limiter, Speed
check the setting
limit setting en-
content of the speed
abled
limit setting.
▪ SAS/OPS con-
troller:
-
Controller defect
▪ Load sensor
unit:
Sensor defect
Load sensor voltage
▪ Load sensor line
check:
(Power supply,
signal, ground): Mount a load,
ground the forks and
Disconnection
check the change in
fault (Harness,
voltage.
connector)
Short or link fault
(Harness, con-
nector)
▪ Lifting height
switch unit:
ON/OFF check with
Disconnection
analyzer
fault (internal
damage, stuck)
▪ Display setting:
Traveling limit
Check setting values
setting disabled
with option set
Load sensing
speed limit dis-
abled
▪ SAS/OPS con-
troller:
-
Controller defect
8-157
Corrective action
Harness check or re-
place switch
Change
Replace
If there is no
change, perform a
harness check or re-
place the sensor.
Harness check or re-
place sensor
Change
Replace
8