Throttle-Idle-Position Auto-Adjusting System - Mazda RX-7 1989 Service Highlights

THROTTLE-IDLE-POSITION AUTO-ADJUSTING SYSTEM
NARROW RANGE
FULL RANGE
NARROW RANGE
FULL RANGE
SENSOR
CLOSED
(0%)
SENSOR
OPEN (100%)
· · · SENSOR OPEN
SENSOR CLOSED
SENSOR OPEN
SENSOR CLOSED
AUTO-ADJUSTING AREA
___..~
50/o
I
150/o : APPROX. 300/o
I
I~
250/o
I~
:
~'
THROTTLE AUTO-ADJUSTING AREA
IDLE
POSITION
850/o
I
SENSOR
OPEN (100%)
FULL
THROTTLE
97UOF2 514
.:. ··e:.ly developed throttle-idle-position auto-adjusting system is incorporated w1thin the engine control unit.
- ·
~
system automatically compensates for certain variations in the output signal of the throttle sensors .
.:. · =: e
tre narrow range throttle sensor is set to output a signal of
20%
of full-open. With the throttle idle-
: =:::on auto-adJUSting system, the eng1ne control unit will compensate for actual output values of
15%-25%.
· ··· e
output is less than 15% or more than 25% at idle, the engine control un1t fixes the value at 15% and
.:: S- :: respectively for fail-safe operation
~:::erat1on
for the full range sensor is the same. The sensor is set to reg1ster a 15°/o s1gnal at 1dle, and the
c.· :;;
~e
control un1t compensates within the range from 5%-25%. If over or under the s1gnal1s fixed at 5%
, ::: 25° o respect1vely for fall-safe operation.
F1-16
~·
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