Water Thermosensor Removal; Water Thermosensor Inspection; Throttle Sensor Inspection; Installation - Mazda MX-5 1990 Workshop Manual

F
F-136
CONTROL SYSTEM
05UOFX-208
05UOFX-209
05UOFX-210
05UOFX-211
WATER THERMOSENSOR
Removal
1. Remove the ignition coil assembly. (Refer to page G-21.)
2. Disconnect the water thermosensor connector.
3. Remove the water thermosensor.
Inspection
1. Place the sensor in water with a thermometer and heat the
water gradually.
2. Measure resistance of the sensor with an ohmmeter.
Coolant Resistance kO
-20°C ( -4°F)
14.6 -17.8
20°C ( 68°F)
2.2 - 2.7
80°C (176°F) 0.29- 0.35
3. If not as specified, replace the water thermosensor.
Installation
1. Install the water thermosensor and a new washer.
Tightening torque:
25-29 N·m (2.5-3.0 m-kg, 18-22 ft-Ib)
2. Connect the water thermosensor connector.
3. Install the ignition coil assembly. (Refer to page G-21.)
THROTTLE SENSOR
Inspection
1. Disconnect the connector from the throttle sensor.
2. Connect the (SSTs) or an ohmmeter to the throttle sensor.