Mazda MX-6 1998, Workshop Manual

Page: 526 / 1282

CONTROL SYSTEM [FS]
Specification
Water temperature (°C {°F}) Resistance (kQ)
20 {68}
35.5— 39.2
60(140} 7.18— 7.92
4. If not as specified, replace the engine coolant
temperature sensor.
Tightening torque
15.7— 23.5 N-m
{1.6— 2.4 kgf-m, 11.6— 17.3 ft-lbf}
INTAKE AIR TEMPERATURE SENSOR INSPECTION [FS]
Inspection of Output Voltage
1. If the SST (104 Pin Breakout Box) are used,
check in the following order.
(1) Remove the PCM. (Refer to 01-40A
POWERTRAIN CONTROL MODULE (PCM)
REMOVAL/INSTALLATION [FS].)
Connect the SST (104 Pin Breakout Box) to
the PCM as shown.
W 6 U 1 4 0 W 1 3
(
2
)
W 6 U 1 4 0 W A L
(3) Tighten the connector bolt.
Tightening torque
7.9— 10.7 N-m
{80— 100 kgf-cm, 69.5— 95.4 in-lbf}
(4) Turn the ignition switch to ON.
(5) Measure the voltage at PCM terminal 39.
Specification
Intake air temperature
condition
PCM terminal 39
voltage (V)
20 °C (68 °F}
Approx. 3.1
(6) If not as specified, check the related harness
and intake air temperature sensor resistance.
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)
Turn the ignition switch to ON.
Select the “PID/DATA MONITOR AND
RECORD” function on the NGS tester display
and press TRIGGER.
Select “IAT V” on the NGS tester display and
press START. The NGS tester measures and
shows the voltage.
Specification
Intake air temperature
condition
“IAT V ” voltage (V)
20 'C {68 "FJ Approx. 3.1
(5) If not as specified, check the related harness
and intake air temperature sensor resistance.
inspection of Resistance
1. R e m o ve th e in ta ke a ir te m p e ra tu re se n so r.
2. Place the intake air temperature sensor in water
with a thermometer, and heat the water gradually.
3. Measure the resistance of the intake air
temperature sensor by using an ohmmeter.
0 1 -4 0 A -2 1