Mazda 1990 323 Workshop Manual Supplement page 319

ELECTRONIC SYSTEM COMPONENTS
K2
OSUOKX-14
03UOKX-148
03UOKX-149
SPEED SENSOR
Inspection
1. Connect a voltmeter between the terminal 1 P and a ground
as shown.
2. Turn the ignition switch ON.
3. Remove the speedometer cable from the transmission.
4. Slowly turn the speedometer cable one turn.
5. Verify that
approx. 7V
is shown 4 times.
6. If not correct, check the speedometer and cable.
SOLENOID VALVE
Inspection
1. Disconnect the solenoid valve connector.
2. Measure resistance between each terminal and a ground.
Resistance: 13-27Q
Note
l
1-2 shift solenoid valve: A
l
2-3 shift solenoid valve: B
l
3-4 shift solenoid valve: C
l
Lockup solenoid valve: D
3. If not correct, check the wiring for an open-or short-circuit.
Replace the solenoid valve.
Continuity
1. Disconnect the 20-pin connector from the EC-AT control unit.
2. Check continuity between terminals 2E, 2G, 21, and 2K, and
a ground.
3. If not correct, check the wiring for an open-circuit.
03UOKX-150
K2-143