Checking the Nissan automatic transmission reduction resistor
Materials:
* Multimeter
* Wrench or screwdriver for removing battery terminals
Procedure:
1. Ensure safety:
* Turn off the ignition and place the gear shift lever in the “P” (park) position.
* Disconnect the negative terminal of the battery to prevent short circuit.
2. Find the automatic transmission reduction resistor:
*The location of the resistor depends on the Nissan model, but it is usually located near the automatic transmission.
* It will look like a small rectangular or cylindrical component with a few wires.
3. Disconnect the wires:
* Disconnect all wires from the resistor. Usually it is two or three wires.
4. Use a multimeter:
* Set the multimeter to resistance (ohms) mode.
* Touch one probe to one terminal on the resistor and the other probe to the other terminal.
5. Read resistance measurement:
* The resistance of the automatic transmission step-down resistor is usually from 0.1 to 5 kOhm.
* If the measured resistance is in this range, the resistor is good.
6. If the resistor is faulty:
* If the resistance measurement is outside the specified range or equal to zero (short circuit) or infinity (open circuit), replace the resistor.
7. Reconnect the wires:
* Connect the wires back to the resistor, making sure they are secure.
8. Connect the battery:
* Connect the negative terminal of the battery.
Note:
*Always check the technical service manual for your specific Nissan model for exact instructions and precautions.
*If you are unsure or feel comfortable, seek assistance from a qualified mechanic.