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Home >> Infiniti >> 2023 >> QX55 Essential >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transmission (DTC/Circuit Diagnosis) >> Circuit Diagnosis >> Shift (Electric Shift Control Module) >> P07EC-00 T/M Range Multi-Function Select >> DTC Diagnosis Procedure
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DTC Diagnosis Procedure

  1. CHECK ELECTRIC SHIFT SENSOR INPUT SIGNAL 

    SYMBOL With CONSULT

    1. Turn ignition switch ON.
    2. Select "Data Monitor" in "SHIFT".
    3. Select "SHIFT SENSOR 1", "SHIFT SENSOR 2", "SHIFT SENSOR 3", "SHIFT SENSOR 4", "SHIFT SENSOR 5", "SHIFT SENSOR 6", "Shift sensor 7", and "Shift sensor 8".
    4. Operate the selector lever to identify a electric shift sensor of which value does not change.

      Monitor item

      Condition

      Value / Status

      SHIFT SENSOR 1

      Selector lever is held in R position

      On

      Other than the above

      Off

      SHIFT SENSOR 2

      Selector lever is held in R and Nr positions

      On

      Other than the above

      Off

      SHIFT SENSOR 3

      Selector lever is held in H (Home) and Nr positions

      On

      Other than the above

      Off

      SHIFT SENSOR 4

      Selector lever is held in H (Home) and Nr positions

      On

      Other than the above

      Off

      SHIFT SENSOR 5

      Selector lever is held in H (Home) and Nd positions

      On

      Other than the above

      Off

      SHIFT SENSOR 6

      Selector lever is held in H (Home) and Nd positions

      On

      Other than the above

      Off

      Shift sensor 7

      Selector lever is held in D/M and Nd positions

      On

      Other than the above

      Off

      Shift sensor 8

      Selector lever is held in D/M position

      On

      Other than the above

      Off

    SYMBOL Without CONSULT

    1. Turn ignition switch ON.
    2. Operate the selector lever.
    3. Check the voltage between the electric shift control module vehicle side harness connector terminal and ground.

      Electric shift sensor

      +

      -

      Condition

      Voltage

      (Approx.)

      Electric shift control module

      Connector

      terminal

      1

      M241

      34

      Ground

      Selector lever is held in R position

      0 V

      Other than the above

      5 V

      2

      35

      Selector lever is held in R and Nr positions

      0 V

      Other than the above

      5 V

      3

      36

      Selector lever is held in H (Home) and Nr positions

      0 V

      Other than the above

      5 V

      4

      37

      Selector lever is held in H (Home) and Nr positions

      0 V

      Other than the above

      5 V

      5

      44

      Selector lever is held in H (Home) and Nd positions

      0 V

      Other than the above

      5 V

      6

      45

      Selector lever is held in H (Home) and Nd positions

      0 V

      Other than the above

      5 V

      7

      39

      Selector lever is held in D/M and Nd positions

      0 V

      Other than the above

      5 V

      8

      40

      Selector lever is held in D/M position

      0 V

      Other than the above

      5 V

    Is the inspection results normal?

    YES

    INSPECTION END

    NO

    GO TO 2.

  2. CHECK HARNESS BETWEEN ELECTRIC SHIFT CONTROL MODULE AND ELECTRIC SHIFT SELECTOR 
    1. Turn ignition switch OFF.
    2. Disconnect the electric shift control module connector.
    3. Disconnect the electric shift selector connector.
    4. Check the continuity between the electric shift control module vehicle side harness connector terminal and the electric shift selector vehicle side harness connector terminal.

      Electric shift sensor

      Electric shift control module

      Electric shift selector

      Continuity

      Connector

      terminal

      Connector

      terminal

      1

      M241

      34

      M244

      17

      Existed

      3

      36

      16

      5

      44

      15

      7

      39

      14

      2

      35

      M243

      2

      4

      37

      3

      6

      45

      4

      8

      40

      5

    5. Check the continuity between the electric shift control module vehicle side harness connector terminals and ground.

      Electric shift sensor

      Electric shift control module

      Ground

      Continuity

      Connector

      terminal

      1

      M241

      34

      Ground

      Not existed

      3

      36

      5

      44

      7

      39

      2

      35

      4

      37

      6

      45

      8

      40

    Is the inspection result normal?

    YES

    Replace the electric shift selector. Refer to Removal and Installation .

    NO

    Repair or replace damaged parts.