LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 514 (Wheel & Tire System (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC C1754: Low Tire Pressure Warning Control Unit >> DTC Diagnosis Procedure

DTC Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The Signal Tech II Tool [- (J-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 LOW TIRE PRESSURE WARNING CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT 

    Perform the trouble diagnosis for power supply and ground circuit. Refer to Diagnosis Procedure .

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace malfunctioning components.

  2. CHECK TIRE PRESSURE RECEIVER CIRCUIT 
    1. Disconnect the tire pressure receiver connector.
    2. Check the continuity between the low tire pressure warning control unit connector and tire pressure receiver connector.

      Low tire pressure warning control unit

      Tire pressure receiver

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M90

      6

      E43 (Front LH)

      3

      Yes

      22

      2

      10

      1

      26

      4

      5

      E60 (Front RH)

      3

      21

      2

      9

      1

      25

      4

      4

      C109 (Rear LH)

      3

      20

      2

      8

      1

      24

      4

      3

      C110 (Rear RH)

      3

      19

      2

      7

      1

      23

      4

    3. Check the continuity between the low tire pressure warning control unit connector and ground.

      Low tire pressure warning control unit

      --

      Continuity

      Connector

      Terminal

      M90

      6

      Ground

      No

      22

      10

      26

      5

      21

      9

      25

      4

      20

      8

      24

      3

      19

      7

      23

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair or replace the malfunctioning harness or connector.

  3. PERFORM SELF DIAGNOSTIC RESULT AGAIN 

    SYMBOL With CONSULT

    1. Check the tire pressure for all wheels and adjust to the specified value. Refer to Tire .
    2. Perform tire pressure sensor ID registration for all wheels. Refer to Work Procedure .
    3. Perform "Self Diagnostic Result".

    Is DTC "C1754" detected?

    YES

    Replace the low tire pressure warning control unit. Refer to Removal and Installation .

    NO

    Check for looseness or damage at the harness connector pins of the low tire pressure warning control unit. Repair or replace if necessary.