Tongsheng TSDZ2 Torque Sensor Replacement – 36V/48V/52V

Tongsheng TSDZ2 Torque Sensor Replacement

This torque sensor assembly is a replacement part for compatible
Tongsheng TSDZ2 mid-drive motors.
It is designed for TSDZ2 systems using the corresponding 2-pin sensor
connection.

The current product specification lists compatibility with
36V, 48V and 52V TSDZ2 systems, with an approximately
11cm black/red cable and a 2-pin connector.

Product Specifications

What Does the TSDZ2 Torque Sensor Do?

The torque sensor is part of the TSDZ2 pedal-assist system. It detects
rider pedaling input so the motor system can provide assistance according
to the rider’s effort.

Because the torque sensor works together with the controller, wiring and
other motor components, a pedal-assist problem should be diagnosed before
the sensor is replaced.

When Should You Check the Torque Sensor?

The torque sensor may be one component to inspect when the TSDZ2 motor
does not respond correctly to pedal input or when torque-based assistance
is not operating as expected.

However, similar symptoms can also be caused by wiring, connector or
controller problems. Replacing the sensor without checking the rest of
the system may not solve the problem.

Check Compatibility Before Ordering

1. Confirm the motor:
   Verify that your e-bike uses a Tongsheng TSDZ2 mid-drive motor.
2. Compare the sensor assembly:
   Compare the shape and dimensions with your original torque sensor.
3. Check the connector:
   This product uses a listed 2-pin connector. Compare the connector
   and wiring with your original part.
4. Check the cable:
   The listed black/red cable length is approximately 11cm.
5. Confirm your motor version:
   Internal TSDZ2 components can differ between motor revisions.
   Do not order based only on voltage.

Installation Reminder

Replacing the TSDZ2 torque sensor is an internal motor repair.
Make sure the motor is disconnected from the battery before service and
carefully record the position of connectors, washers, spacers and other
components during disassembly.

If you are not familiar with TSDZ2 internal motor repairs, consider having
the part installed by an experienced e-bike technician.

Before Replacing the Sensor

If your TSDZ2 motor has lost pedal-based assistance, inspect the complete
system before assuming the torque sensor is the only cause.

• Check visible connectors and wiring for damage or loose connections.
• Confirm that the display and controller are operating normally.
• Inspect the original torque sensor connector and cable.
• Compare the original sensor assembly with the product photos.

This can help avoid replacing a working sensor when the fault is located
elsewhere in the system.

Related Tongsheng TSDZ2 Repair Parts

If you are repairing a TSDZ2 mid-drive motor, you may also need related
controllers, reduction gears, main gears, speed sensors, displays or
other replacement components.

Browse Tongsheng TSDZ2 Repair Parts →

Frequently Asked Questions

Is this a replacement torque sensor for the Tongsheng TSDZ2?

Yes. The current product specification lists this sensor assembly for the
Tongsheng TSDZ2 mid-drive motor.

Which voltages are listed for this TSDZ2 torque sensor?

The current product information lists 36V, 48V and 52V systems.
Voltage alone is not enough to confirm compatibility, so compare your
motor version and original sensor as well.

What connector does the sensor use?

The product specification lists a 2-pin connector with an approximately
11cm black/red cable.

Is this torque sensor confirmed for TSDZ2B?

The available product information for this SKU specifically confirms
Tongsheng TSDZ2 compatibility. TSDZ2B compatibility is not currently
confirmed on this listing, so please contact us before ordering for a
TSDZ2B motor.

Does a failed pedal-assist system always mean the torque sensor is bad?

No. Wiring, connectors, controller faults and other motor-system problems
can produce similar symptoms. Diagnose the system before replacing the
torque sensor.

Can this sensor work with an older TSDZ2 motor?

The existing product information states that the torque sensor system can
be compatible with an older-version motor when the two gaskets are not
used. Because exact motor revisions are not specified, compare your
original assembly before installation.