Manual control of automatic transmission solenoids
Manual control of automatic transmission (automatic transmission) solenoids allows you to manually change gears without using the gear selector. This can be useful for troubleshooting, towing a vehicle, or for sport driving.
Required equipment:
* Multi-pole switch or toggle switches
* Wires and connectors
* Voltage tester or multimeter
Precautions:
* Disconnect the negative terminal of the battery before starting work.
* Observe safety precautions when working with the vehicle’s electrical system.
* Do not turn the solenoids on or off while the vehicle is moving.
Switch connection:
1. Determine the colors of the solenoid wires in the automatic transmission pinout table or using the wiring diagram.
2. Connect one pole of the switch to the positive terminal of the battery.
3. Connect each switch terminal to the corresponding solenoid wire.
4. Connect the ground wire (usually black) of the switch to the negative terminal of the battery.
Pinout table for common automatic transmission solenoids:
| Solenoid | Wire color |
|—|—|
| Gear 1 | Blue or green |
| Transfer 2 | Yellow or pink |
| Transfer 3 | Brown or red |
| Gear 4 | Orange or purple |
| Transfer 5 | Gray or white |
| Transfer 6 | Green with black stripe |
| Reverse gear | Red with black stripe |
Switch control:
*To turn the solenoid on, turn the appropriate switch to the “On” position.
* To turn off the solenoid, turn the appropriate switch to the “Off” position.
Gear shift:
1. Turn the ignition key to the “On” position.
2. Place the gear shift lever in neutral.
3. Turn on the solenoid corresponding to the desired gear.
4. Slowly press the accelerator pedal and drive off.
5. To shift to a higher gear, release the solenoid for the current gear and engage the solenoid for the higher gear.
6. To downshift, perform the engine braking procedure and then engage the downshift solenoid.
Troubleshooting:
If the solenoid does not operate when the switch is turned on, check the following components:
* Fuses
* Wires and connections
* Voltage test or multimeter to check power and ground
* Sensors and electronic control unit for automatic transmission