Subaru 2002 Impreza Service Manual page 443

COMBINATION METER
Instrumentation/Driver Info
~
Indication
Type
Display
C: SPEEDOMETER
1. DESCRIPTION
0
The speedometer system is an electrical type that uses electric signals from the speed sensor
in the MT model or the transmission control module (TCM) in the AT model.
0
The vehicle speed sensor is installed on the manual transmission.
0
Since the system does not use mechanical components such as rotating cable, there are no
opportunities of occurring such problems as meter needle vibration and cable disconnection.
Also, it does not constitute any means of mechanical noise transmission.
0
The odometer and tripmeter readings appear on a liquid crystal display (LCD).
Needle points to 60 km/h (37.3 miles) when 2,548 pulses are input per minute.
Pulse count type.
LCD/6 digits; 0 to 999,999 km (mile).
2. OPERATION
MT model: The vehicle speed sensor sends vehicle speed signals (4 pulses per rotation of speed
sensor's driven shaft) to the speedometer drive circuit and odometerhipmeter drive circuit in the
speedometer.
AT model: The TCM sends vehicle speed signals (4 pulses per rotation of output shaft) to the
speedometer drive circuit and odometerhripmeter drive circuit in the Speedometer.
NOTE:
Signals from the speed sensor or TCM are also used by the engine control module, automatic
transmission control module, etc.
Tripmeter
3. SPECIFICATION
Counts up 1 km per 2,548 pulses (1 mile per 4,104 pulses). (Count down is impos-
sible.)
LCD/4 digits; 0 to 9999 km (mile).
Counts up 1 km per 2,548 pulses (1 mile per 4,104 pulses). (To change the tripme-
ter from A to B or B to A, push the knob momentarily. To return the tripmeter to zero
indication, keep the knob pushed for more than 1 second.)
Indication
Type Pulse count type.
Display
Indication
Speedometer
I
Type
1
Electric pulse type.
I
Odometer
IDI-6