Toyota 7BPUE15, Руководство по обслуживанию

Страница: 96 / 411

Toyota Orderpicker Model 1 5 Service Manual Section 6. Codes and Tests
Maintenance Mode
Lower limit see Note on previous N
OTE
: This test will not work if you step on the
pedal.
Auto manual 2. Rotate the steering wheel.
Lift limit 3. See Table 6-4 below for test results. This
180" Height see Note on previous
velocity-sensitive feedback tells you if the
system is receiving steering requests from
the steer encoder.
Throttle Potentiometer Test
2. Rotate the throttle (via the control handle)
from neutral to maximum speed in each
direction.
on
The horn should click and the 2nd BDI
LED should blink 3-4 times for each
direction.
If the horn does not click and the LED
does not blink, the analog voltage is
outside the acceptable range. Test the
resistance of the throttle potentiometer.
Learning Throttle Lift Potentiometer
There are two methods for learning the neutral
position of the throttle potentiometer. You can
use the procedure in the following table or use
the
program. See
Program" on page 10-2.
Steer Encoder Test
Step
1
2
3
4
5
6
7
8
1. Enter maintenance mode and step OFF
the pedal. See "Enter" on
page 6-4.
Technician Action
Key ON, EPO in, pedal down
Key OFF
Key ON, wait for 3 horn chirps
EPO out, EPO in
EPO out, EPO in
EPO out, horn chirps 10 times when
truck h a s learned neutral position of
throttle potentiometer
pedal u p
Key OFF, Key ON
4. Measure the voltage a t PC 2- 1 (Channel A)
and PC 2-4 (Channel with respect to
PC 2-2 (DGND) a s you rotate the steering
wheel.
Horn clicks
and
blink a t the
same rate
you
rotate the
steering wheel.
Horn clicks
and
blink a t a
different rate
than you
rotate the
steering wheel.
Horn and
LEDs
do not
respond
when
you rotate the
steering wheel.
Table Steer
5. The voltage should vary a s the steering
wheel is rotated.
Steer encoder
is good.
Steer encoder
is missing one
channel.
Steer encoder
or cable is bad.
Encoder Test Results
6. If the voltages do not match the table
above, replace the steer encoder.
None required.
Do not
continue
through the
steer encoder
test.
Test the
individual
channels. Go
to step
4.
Replace the
steer encoder.
Rate of Rotation
Slow
Fast
00700-CL222-05, 1 5 March 2005
Voltage
Toggle 0-5V
Approximately