Component Tests and General Diagnostics
AUTOMATIC TRANSAXLE (A/T) CONTROL COMPONENT CHECK1. Check crankshaft position sensor.
2. Check throttle position sensor.
3. Check oil temperature sensor.
a. Remove the oil temperature sensor.
b. Measure the resistance between terminals No. 1 and No. 2 of the oil temperature sensor connector.
Standard value:
Oil temperature at 0° C (32° F): Resistance 1.67 - 20.5 k ohms
Oil temperature at 100° C (212° F): Resistance 0.57 - 0.69 k ohms
c. Replace the sensor if not within the standard value.
4. Check park/neutral position switch.
5. Check stop light switch.
6. Check vehicle speed sensor.
7. Check dual pressure switch.
8. Check closed throttle position switch.
9. Check A/T control relay.
a. Remove the A/T control relay.
b. Use jumper wires to connect the A/T control relay terminal (2) to the battery (-) terminal and terminal (4) to the battery (+) terminal.
c. Check the continuity between the terminal (1) and the terminal (3) of the A/T control relay when the jumper wires are connected to and disconnected from the battery.
Jumper wire: Continuity between terminals No. 1 and No. 3
Connected: Continuity
Disconnected: No continuity
d. If there is a problem, replace the A/T control relay.
10. Check solenoid valve.
a. Remove the valve body cover.
b. Disconnect the connectors of each solenoid valve.
c. Measure the resistance between terminals 1 and 2 of each solenoid valve.
Standard value (at 20° C (68° F)):
Torque converter clutch solenoid: 2.7 - 3.4 ohms resistance
Low and reverse solenoid valve: 2.7 - 3.4 ohms resistance
Second solenoid valve: 2.7 - 3.4 ohms resistance
Underdrive solenoid valve: 2.7 - 3.4 ohms resistance
Overdrive solenoid valve: 2.7 - 3.4 ohms resistance
d. If the resistance is not within the standard value, replace the solenoid valve.