Pinout Matrix - Toyota 7BPUE15 Service Manual

Toyota Orderpicker Model

Pinout Matrix

The pinout matrix chart lists functions and
normal voltages of terminals and harness
connector pins. The matrix columns have the
following meanings:
1. Item sequential number to aid in
reference.
2. Connection: the actual wire numbers or
component abbreviations on the electrical
schematic.
3 . Function Description: brief definition o f
the signal carried on the wire.
4. Theory of Operation:
a. A detailed description of the signal
carried on the wire. If the signal can be
variable, it indicates the state of a
related component that will cause the
signal to vary.
P S AGND
PSI-1 STEER DlRl
PSI-10 STEER DIR2
-6
1 STEER DlRl
P S
PWM
PSI-15 STEER DIR2
PWM
00700-CL222-05, 1 5
Service Manual
head will not function and code 3,2 is
displayed during self-diagnostics. Check
voltage at (+12VF) on the STM.
Battery negative for the control circuitry
on the steer power head. It comes from
the STM.
Input from the STM to turn on the circuitry
in one half of the steer transistor circuit for
steering right.
Input from the STM to turn on the circuitry
in one half of the steer transistor circuit for
steering left.
Input from the STM to
one half of the steer transistor circuit for
steering in the left.
Input from the STM to
one half of the steer transistor circuit for
steering right.
2005
March
Section
b. Identifies possible causes for lack of
proper signal.
5.
Normal Level: the approximate voltage that
should be seen on that wire for the state
indicated. Unless otherwise indicated,
voltages are measured with respect to (wrt)
B- at TP4.
6. Signal Source: the device or connection
that supplies the signal directly to the
wire.
7. Signal User: the device or connection to
which the wire directly delivers the signal.
(B-)
5V no steering
O V steering right
5V no steering.
O V steering left
PWM
the circuitry in
O V not steering.
fast left
PWM
the circuitry in O V not steering.
fast right
9.
Theory of Operation
Pinout Matrix
STM Steer
Power
Head
STM Steer
Power
Head
STM Steer
Power
Head
STM Steer
Power
Head
STM Steer
Power
Head
9-5 1