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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 569 (Automatic Transmission (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC P0826: Up And Down Shift SW >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC (COMBINATION METER) 

    SYMBOL With CONSULT

    1. Turn ignition switch ON.
    2. Select "Self Diagnostic Results" in "METER/M&A".

    Is any DTC detected?

    YES

    Check DTC detected item. Refer to DTC Index .

    NO

    GO TO 2.

  2. CHECK MANUAL MODE SWITCH POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect CVT shift selector connector.
    3. Turn ignition switch ON.
    4. Check voltage between CVT shift selector harness connector terminal and ground.

      +

      -

      Condition

      Voltage

      (Approx.)

      CVT shift selector

      Connector

      Terminal

      M78

      7

      Ground

      Ignition switch: ON

      12 V

      Ignition switch: OFF

      0 V

      8

      Ignition switch: ON

      12 V

      Ignition switch: OFF

      0 V

      9

      Ignition switch: ON

      12 V

      Ignition switch: OFF

      0 V

      10

      Ignition switch: ON

      12 V

      Ignition switch: OFF

      0 V

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 4.

  3. CHECK MANUAL MODE SWITCH 
    1. Turn ignition switch OFF.
    2. Check manual mode switch. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Repair or replace damaged parts.

  4. CHECK CIRCUIT BETWEEN CVT SHIFT SELECTOR AND COMBINATION METER 
    1. Turn ignition switch OFF.
    2. Check diode.
    3. Disconnect combination meter connector.
    4. Check continuity between CVT shift selector harness connector terminals and combination meter harness connector terminals.

      CVT shift selector

      Combination meter

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M78

      7

      M23

      43

      Existed

      8

      45

      9

      44

      10

      46

    5. Check continuity between CVT shift selector harness connector terminals and ground.

      CVT shift selector

      --

      Continuity

      Connector

      Terminal

      M78

      7

      Ground

      Not existed

      8

      9

      10

    Is the inspection result normal?

    YES

    Check intermittent incident. Refer to Intermittent Incident .

    NO

    Repair or replace damaged parts.

  5. CHECK GROUND CIRCUIT 

    Check continuity between CVT shift selector harness connector terminal and ground.

    CVT shift selector

    --

    Continuity

    Connector

    Terminal

    M78

    4

    Ground

    Existed

    Is the inspection result normal?

    YES

    Check intermittent incident. Refer to Intermittent Incident .

    NO

    Repair or replace damaged parts.