Transmission Control Systems: Service and Repair

INPUT SPEED SENSOR CHECK
1. Disconnect the input speed sensor connector.





2. Measure the resistance between the input speed sensor side connector terminals 1 and 2.
Standard value: 0.3 - 1.2 K Ohms
3. If the resistance is outside the standard value, replace the input speed sensor.

OUTPUT SPEED SENSOR CHECK
1. Disconnect the output speed sensor connector.





2. Measure the resistance between the input speed sensor side connector terminals 1 and 2.
Standard value: 0.3 - 1.2 k Ohms
3. If the resistance is outside the standard value, replace the output speed sensor.

TRANSAXLE RANGE SENSOR CHECK
Refer to Transmission Control Systems, Transmission Mode Switch, Testing and Inspection.

OVERDRIVE SWITCH CHECK
Refer to Automatic Transmission Transmission/Transaxle, Overdrive Switch - Transmission, Testing and Inspection.

THROTTLE POSITION SENSOR (TPS) CHECK
Refer to Powertrain Management, On-vehicle Inspection of MFI Components.

ENGINE COOLANT TEMPERATURE SENSOR CHECK
Refer to Powertrain Management, On-vehicle Inspection of MFI Components.

CRANKSHAFT POSITION SENSOR CHECK
Refer to Powertrain Management, Troubleshooting.

MANIFOLD ABSOLUTE PRESSURE SENSOR CHECK
Refer to Powertrain Management, On-vehicle Inspection of MFI Components.

EATX RELAY CHECK
1. Remove the EATX relay.





2. Check the continuity between the EATX relay terminals 4 and 6.

Part 1 Of 2:

Part 2 Of 2:

3. Use jumper leads to connect EATX relay terminal 4 to the battery (+) terminal and terminal 6 to the battery (-) terminal.
4. Check the continuity between EATX relay terminals 2 and 8 while connecting and disconnecting the jumper lead at the battery (-) terminal
5. If there is a defect, replace the EATX relay.

STOP LIGHT SWITCH CHECK
Refer to Lighting and Horns, On-vehicle Service.

LR SOLENOID CHECK
1. Disconnect the solenoid & pressure switch assembly connector.





2. Measure the resistance between the solenoid & pressure switch assembly side connector terminals 4 and 6.
Standard value: Approximately 1 Ohm [at 20°C (68°F)]
3. If the resistance is outside the standard value, replace the solenoid & pressure switch assembly.

2/4 SOLENOID CHECK
1. Disconnect the solenoid & pressure switch assembly connector.





2. Measure the resistance between the solenoid & pressure switch assembly side connector terminals 3 and 6.
Standard value: Approximately 1 Ohms [at 20°C (68°F)]
3. If the resistance is outside the standard value, replace the solenoid & pressure switch assembly.

OD SOLENOID CHECK
1. Disconnect the solenoid & pressure switch assembly connector.





2. Measure the resistance between the solenoid & pressure switch assembly side connector terminals 6 and 8.
Standard value: Approximately 1 Ohms [at 20°C (68°F)]
3. If the resistance is outside the standard value, replace the solenoid & pressure switch assembly.

UD SOLENOID CHECK
1. Disconnect the solenoid & pressure switch assembly cog rector.





2. Measure the resistance between the solenoid & pressure switch assembly side connector terminals 6 and 7.
Standard value: Approximately 1 Ohms [at 20°C (68°F)]
3. If the resistance is outside the standard value, replace the solenoid & pressure switch assembly.