Electric Type Speedometer - Mitsubishi 1993 3000GT Technical Information Manual

7-16

ELECTRIC TYPE SPEEDOMETER

CONSTRUCTION
The electric type speedometer uses an electronic
circuit to control the electric signal from the vehicle
speed sensor and a cross coil type speedometer that
has a magnet fixed to the pointer shaft and two coils
OPERATION
Electronic Circuit
It shapes the wave of the electric signal from the
vehicle speed sensor in the shaping circuit and, after
calculating vehicle speed at the calculation circuit, it
controls current flow to the cross coil and stepping
motor.
It determines the direction of current flowing in each
cross coil by using the quadrant indicating circuit and,
at the same time, it determines the current value
ELECTRICAL -
Meters and Gauges
that pass directly through it. Furthermore, the
odometer and trip meter are directly driven by the
stepping motor with built-in gear.
using the duty data circuit, and sends current from the
meter drive circuit to drive the pointer.
It determines the current value flowing to the stepping
motor by using the pulse motor data circuit, and
sends current from the pulse motor drive circuit to
drive the odometer and trip meter.
Electronic circuit
16F0232
16F0233