The automatic transmission control unit in the Nissan Sunny is usually located in the engine compartment. The exact location may vary depending on the year and model of the vehicle.
Typically the automatic transmission control unit is located:
*Under the hood: It can be mounted on the firewall or on one side of the engine compartment.
* Near the automatic transmission: It can be installed directly on the automatic transmission itself or next to it.
To find the automatic transmission control unit, follow these steps:
1. Open the hood and inspect the engine compartment.
2. Look for a device with electrical connections and an aluminum body.
3. It will usually be labeled “Automatic”, “TCM” (Transmission Control Module) or “ECU” (Electronic Control Unit).
If you cannot locate the automatic transmission control module, consult your vehicle’s owner’s manual or a qualified mechanic.