On harness side measure voltage between terminals No. 10 or 20, and terminals No. 2, 3, 4, 5, 7, 14 and 15. See Figure and Figure . See TCM PIN VOLTAGE table. If voltage is not as specified, repair wiring harness circuit or replace component as necessary. See WIRING DIAGRAMS.

Fig 1: Identifying TCM Location & Harness Side Terminals

Courtesy of NISSAN MOTOR CO., U.S.A.

TCM PIN VOLTAGE

Terminal No. - Circuit	Condition	Voltage
2 - Throttle Opening Signal	Ignition On	Approximately 0.3-3.3 Volts, Voltage Varies With Throttle Opening Angle
3 - Secondary Throttle Sensor	Vehicle Running	Approximately 0.4-4.4 Volts, Voltage Varies With Secondary Throttle Valve Opening Angle
4 - Secondary Throttle Signal	Vehicle Running	Approximately 0.3-3.3 Volts, Voltage Is 3/4 Of Voltage At Secondary Throttle Sensor
5 - Engine Temp.	Engine Running	Approximately 0-5 Volts, Sensor For TCM Voltage Varies With Engine Temperature
7 - TCS Switch	Ignition On	Approximately 10 Volts
14 - Throttle Motor Relay	Ignition On	Approximately 1.5 Volts
15 - Power Supply For Sensor	Ignition On	Approximately 5 Volts

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Throttle Control Module (TCM)

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?