Active Steering Control Knob Is Out Of Alignment - Toyota 8FGU15 Repair Manual

8-176
Control type
Active steering con-
trol
Phenomenon on Malfunction area
vehicle and mode
Knob position is out
of alignment.
(Knob position is not
constant when trav-
eling straight ahead)
Knob position is out
of alignment.
(Knob position is not
constant when trav-
eling straight ahead)
Checking method
▪ Tire angle
sensor unit:
Sensor defect
Tire angle sensor
▪ Tire angle
voltage check:
sensor installa-
tion: Operate the steering
and check the
Looseness of
change in voltage.
the attachment
part, damage,
bearing housing
damage
▪ Tire angle
sensor matching
value:
-
Does not match
actual status (re-
match)
▪ Steering angle
sensor unit:
Sensor defect
Check sensor
▪ Steering angle
voltage with the ana-
sensor installa-
lyzer.
tion:
Cam or steering
wheel defect
Using an active test,
turn the knob com-
pensation SOL ON
and OFF and oper-
ate the steering at
the tire end.
▪ Knob compensa-
tion valve unit:
SOL ON: Check that
the steering wheel
Leak, stuck, (in-
can be turned freely.
ternal damage)
SOL OFF: Check
that the steering
wheel cannot be
turned freely (steer-
ing is heavy).
▪ PS cylinder sys-
tem link defect:
-
Eccentric pin,
kingpin defect
8 TROUBLESHOOTING
Corrective action
If there is no
change, perform an
installation check or
replace the sensor.
Follow matching pro-
cedure to rematch.
Harness check or re-
place sensor
Replace
Replace