Mast Backward Tilting Speed Is Not Limited/Always Slow - Toyota 8FGU15 Repair Manual

8-172
Control type
Active mast function
control
Phenomenon on Malfunction area
vehicle and mode
Mast backward tilt-
ing speed is not lim-
ited.
Or, backward tilting
speed is always
slow.
Checking method
▪ Automatic fork
leveling switch
unit:
Open fault (in-
ternal damage)
▪ Automatic fork
leveling switch
detection mech-
anism (mini
lever, joystick
lever):
ON/OFF check with
analyzer
Detection part
gap adjustment
defect
▪ Automatic fork
leveling switch
line (Power sup-
ply, signal,
ground):
Disconnection
fault (Harness,
connector)
▪ C/V tilt control
Turn the tilt solenoid
valve:
ON/OFF and oper-
ate to backward tilt
Stuck (internal
using an active test.
damage)
▪ Lifting height
switch unit
(2200H):
ON/OFF check with
analyzer
Disconnection
fault (internal
damage, stuck)
▪ SAS/OPS con-
troller:
-
Controller defect
8 TROUBLESHOOTING
Corrective action
Harness check or re-
place switch
If there is no change
in the backward tilt-
ing speed when ON/
OFF operated, re-
place the C/V tilt
control valve.
Harness check or re-
place switch
Replace