Nissan Sentra B18 (2020-2025) Service Manual: Diagnosis Procedure

Diagnosis Procedure Note:

The Signal Tech II Tool [– (NI-50190)] can be used to perform the following functions: Refer to the Signal Tech II User Guide for additional information.

• Activate and display TPMS sensor IDs

• Display tire pressure reported by the TPMS sensor

• Read TPMS DTCs

• Register TPMS sensor IDs

1. CHECK TIRE PRESSURE SENSOR INSTALLATION

   1. Check visually that all four tire pressure sensors are installed to wheels correctly.

      Note:

      In the following case, TPMS system does not function:

      • Tire pressure sensor(s) are not installed.

      • Tire pressure sensor(s) of other cars are installed.

   Are the genuine NISSAN tire pressure sensors installed correctly?

   YES >>

   GO TO 2.

   NO >>

   Replace and/or Install tire pressure sensor(s). Refer to Removal and Installation. GO TO 3.

2. CHECK TIRE PRESSURE SENSOR ACTIVATION TOOL

   1. Check tire pressure sensor activation tool.

   Is the inspection result normal?

   YES >>

   GO TO 3.

   NO >>

   Replace the battery of tire pressure sensor activation tool or repair/replace the tire pressure sensor activation tool.

3. TIRE PRESSURE SENSOR ID REGISTRATION

   1. Perform tire pressure sensor ID registration. Refer to Work Procedure.

      CAUTION:

      To perform ID registration, observe the following points:

      • Never register ID in a place where radio waves are interfered (e.g. radio tower).

      • Never register ID in a place close to Nissan Sentra vehicles including TPMS sensor.

   Is tire pressure sensor ID registration completed?

   YES >>

   Inspection End.

   NO >>

   GO TO 4.

4. CHECK TIRE PRESSURE SIGNAL

   1. Change the work location and perform ID registration again.

      Note:

      Depending on the tire pressure sensor position*, a blind spot exists, and the tire pressure receiver gets a poor reception. If an ID registration is performed under this condition, the registration may not be completed. In such case, follow the instructions below to improve the radio wave receiving environment.

      • Rotate tire by 90°, 180°, or 270°. (This step is to change tire pressure sensor position.)

      • Open the door close to the tire of which ID registration is ongoing.

      *: Radio wave reception condition depends on Nissan Sentra vehicle architecture (e.g. body harness layout, tire wheel design) or environment.

   When ID registration is performed, which wheels do not react?

   All wheels react and ID registration is possible.>>

   Inspection End.

   Only certain wheel(s) do not react.>>

   Replace applicable tire pressure sensor. Refer to Removal and Installation.

   All wheels do not react.>>

   Replace the BCM. Refer to Removal and Installation.

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