1. Disconnect the negative battery cable.
2. Remove the control valve body cover. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [GF4AX-EL].)
3. Disconnect the TFT sensor connector.
4. Remove the TFT sensor.
5. Install the TFT sensor.
6. Connect the TFT sensor connector.
7. Install the control valve body cover. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [GF4AX-EL].)
8. Connect the negative battery cable.