Ops Troubleshooting; Cannot Lower The Lift - Toyota 8FGU15 Repair Manual

8 TROUBLESHOOTING
Phenomenon on
Control type
vehicle
For cowl lever
vehicles:
OPS

Cannot lower the lift.

Malfunction area
Checking method
and mode
▪ Lift lower switch
unit:
Open fault
(Switch mounted
incorrectly, in-
ternal damage,
stuck)
▪ Lift lower switch
ON/OFF check with
line:
analyzer
Disconnection
fault (Harness,
connector)
▪ Switch ground
line:
Disconnection
fault (Harness,
connector)
Using an active test,
▪ C/V lift lower
turn the lift lower
lock valve:
lock solenoid ON
Stuck (internal
and perform lower
damage)
operation.
▪ Seat switch unit:
Open fault (in-
ternal damage)
ON/OFF check with
▪ Seat switch line
analyzer
(Signal, ground):
Disconnection
fault (Harness,
connector)
8-179
Corrective action
Harness check or re-
place switch
If the lift cannot
lower by lower oper-
ation, replace the C/
V.
Harness check or re-
place switch
8