Nissan Maxima Service and Repair Manual: P1709 incompleted data writing

Description

When TCM does not store calibration data (individual characteristic value) of each solenoid valve that is stored in the ROM assembly (in the control valve), a malfunction is detected.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

NOTE: Immediately after performing any "DTC CONFIRMATION PROCEDURE", always turn ignition switch OFF.

Then wait at least 10 seconds before performing the next test.

1.CHECK DTC DETECTION

With CONSULT

  1.  Turn ignition switch OFF.

  2.  Wait for at least 10 consecutive seconds.

  3.  Turn ignition switch ON.

  4.  Perform "Self Diagnostic Results" in "TRANSMISSION".

Diagnosis Procedure

1.CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (ROM ASSEMBLY) (PART 1)

  1.  Turn ignition switch OFF.

  2.  Disconnect TCM connector and CVT unit connector.

  3.  Check continuity between TCM vehicle side harness connector terminals and CVT unit vehicle side harness connector terminal.

2.CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (ROM ASSEMBLY) (PART 2)

Check continuity between TCM vehicle side harness connector terminals and ground.

3.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

Check TCM power supply and ground circuit. Refer to TM-95, "Diagnosis Procedure".

4.REPLACE TCM

  1.  Replace the TCM. Refer to TM-168, "Exploded View".

  2.  Perform "DTC CONFIRMATION PROCEDURE". Refer to TM-99, "DTC Logic".

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