Material Handling Ops Does Not Operate - Toyota 8FGU15 Repair Manual

8-182
Control type
OPS
Phenomenon on Malfunction area
vehicle and mode
Material handling
OPS does not oper-
ate.
Checking method
▪ C/V tilt control
Turn the tilt solenoid
valve:
OFF and operate to
forward tilt using an
Stuck (internal
active test.
damage)
Turn the backward
▪ C/V backward tilt
tilt lock solenoid
lock valve:
OFF and operate to
Stuck (internal
backward tilt using
damage)
an active test.
Using an active test,
▪ C/V lift lower
turn the lift lower
lock valve:
lock solenoid OFF
Stuck (internal
and perform lower
damage)
operation.
For cowl lever
vehicles:
Turn the unload
valve solenoid ON
and perform lift rais-
▪ C/V unload ing operation using
valve: an active test.
Stuck (internal For mini lever, joy-
damage) stick lever vehicles:
Turn the unload
valve solenoid OFF
and perform lift rais-
ing operation using
an active test.
▪ Seat switch unit:
Short fault (in-
ternal damage)
ON/OFF check with
▪ Seat switch line
analyzer
(Signal, ground):
Disconnection
fault (Harness,
connector)
▪ SAS/OPS con-
troller, OPS con-
-
troller:
Controller defect
8 TROUBLESHOOTING
Corrective action
If forward tilt can be
performed, replace
the C/V tilt control
valve.
If backward tilt can
be performed, re-
place the C/V tilt
control valve.
If lowering can be
performed, replace
the C/V lift lower
lock valve.
If raising can be per-
formed, replace the
C/V unload valve.
Harness check or re-
place switch
Replace