A/T Control Component Check

The TPS is a variable resistor type that rotates with the throttle body shaft to sense the throttle valve angle. As the throttle shaft rotates, the output voltage of the TPS changes. The ECM detects the throttle valve opening based on voltage change. Refer to THROTTLE POSITION (TP) SENSOR .

Fig 1: Identifying Throttle Position Sensor Connector

1. Remove the oil temperature sensor.
2. Measure the resistance between terminals 1 and 2 of the oil temperature sensor connector.
   Fig 2: Oil Temperature Sensor Standard Value Table

   
   Fig 3: Checking Oil Temperature Sensor

   

1. Remove the vehicle speed sensor and connect a 3-10 k/ohms resistance as shown in the illustration.
2. Turn the shaft of the vehicle speed sensor and check that there is voltage between terminals 1-2 (1 turn = 4 pulses).
   Fig 4: Checking Vehicle Speed Sensor

   

1. Remove the A/T control relay.
2. Use jumper wires to connect A/T control relay terminal 2 to the battery (-) terminal and terminal 4 to the battery (+) terminal.
3. Check the continuity between terminal 1 and terminal 3 of the A/T control relay when the jumper wires are connected and disconnected from the battery.
4. If there is a problem, replace the A/T control
   Fig 5: A/T Control Relay Inspection Table

   
   Fig 6: Checking A/T Control Relay Inspection

   

1. Remove the valve body cover.
2. Disconnect the connectors of each solenoid valve.
   Fig 7: Identifying Solenoid Valves

   
3. Measure the resistance between terminals 1 and 2 of each solenoid valve.
   Fig 8: Solenoid Valves Standard Value Table

   
   Fig 9: Checking Solenoid Valve Resistance

   
4. If the resistance is outside the standard value, replace the solenoid valve.

Fig 10: Identifying Solenoid Valve Terminals & Resistance Specification

Fig 11: Identifying Solenoid Valve Connector Terminals