Mazda MX-6 1998, Workshop Manual

Page: 523 / 1282

CONTROL SYSTEM [FS]
W 6 U 1 4 0 W A C
(3) Tighten the connector attaching screws.
Tightening torque
7.9— 10.7 N-m
{80— 100 kgf-cm, 69.5— 95.4 in lbf}
(4) Verify that the throttle valve is at the closed
throttle position.
(5) Turn the ignition switch to ON.
(6) Measure the PCM terminal 89 voltage by
using a voltmeter.
Specification
Closed throttle position: 0.3— 0.7 V
Wide open throttle: 3.4— 5.3 V
(Verify that the voltage increase is directly
proportioned to the throttle valve opening
angle.)
(7) If not as specified, adjust the throttle position
sensor.
2. If the SSTs (NGS tester) are used, check in the
following order.
(1) Connect the
SSTs (NGS tester) to the data
link connector.
(
2
)
(3)
(4)
(5)
Verify that the throttle valve is at the closed
throttle position.
Turn the ignition switch to ON.
Select the “PID/DATA MONITOR AND
RECORD” function on the NGS tester display
and press TRIGGER.
Select “TP V” on the NGS tester display and
press START. NGS tester measures and
shows the voltage.
Specification
Closed throttle position: 0.3— 0.7 V
Wide open throttle: 3.4— 5.3 V
(Verify that the voltage increase is directly
proportioned to the throttle valve opening
angle.)
(6) If not as specified, adjust the throttle position
sensor.
THROTTLE POSITION SENSOR ADJUSTMENT [FS]
Caution
•
The throttle position sensor is adjusted at
the factory before shipment. Unnecessary
adjustment will negatively effect the
engine performance.
• Adjusting the throttle position sensor by
using the throttle adjusting screw (TAS)
will negatively effect the engine
performance.
1. Verify that the throttle valve is at the closed
throttle position.
2. Disconnect the throttle position sensor connector.
3. Turn the ignition switch to ON.
4. Measure the voltage at harness side connector
terminal A by using an ohmmeter and record it.
W 6 U 1 4 0 W A O
Specification
4.5— 5.5 V
5. Turn the ignition switch to OFF.
6. Connect the throttle position sensor connector.
7. Loosen the attaching screws.
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