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Nissan Sentra Service Manual: P1586 G Sensor

DTC Logic

DTC DETECTION LOGIC

DTC

CONSULT screen terms (Trouble diagnosis content)

DTC detection condition

Possible causes

P1586 G Sensor (Gravity Sensor Circuit) When the following diagnosis conditions are satisfied and the detection conditions are satisfied twice in the same DC:

Diagnosis conditions

  • While driving
  • TCM power supply voltage: More than 11 V

Detection condition

  • The G sensor detection voltage is 0.7 V or less continuously for 5 seconds or more.
  • Harness or connector (G sensor circuit)
  • G sensor
When the following diagnosis conditions are

satisfied and the detection conditions are satisfied twice in the same DC:

Diagnosis conditions

  • While driving
  • TCM power supply voltage: More than 11 V

Detection condition

  • The G sensor detection voltage is 3.2 V or more continuously for 5 seconds or more.

NOTE:

DC stands for “DRIVING CYCLE” and indicates a series of driving cycle of “Ignition switch OFF → ON → driving → OFF”.

DTC CONFIRMATION PROCEDURE

CAUTION:

Be careful of the driving speed.

1.PREPARATION BEFORE WORK

If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.

>> GO TO 2.

2.CHECK DTC DETECTION

With CONSULT


  1. With CONSULT
  2. Drive the vehicle for 10 seconds or more.
  3. Stop the vehicle.

CAUTION:

Never stop the engine.

  1. Repeat step 2 through 3.
  2. Check the DTC.

Is “P1586” detected? YES >> Go to TM-218, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK G SENSOR SIGNAL

With CONSULT


  1. Park the vehicle on a level surface.
  2. Turn ignition switch ON.
  3. Select “Data Monitor” in “TRANSMISSION”.
  4. Select “G SEN SLOPE”.
  5. Swing the vehicle and check if the value varies between −40.45% and 40.45%.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 2.

NO >> GO TO 3.

2.CALIBRATION OF G SENSOR (PART 1)

With CONSULT


  1. Select “Self Diagnostic Results” in “TRANSMISSION”.
  2. Touch “Erase”.

>> Perform “CALIBRATION OF G SENSOR”. Refer to TM-147, "Work Procedure".

3.CHECK SENSOR POWER SUPPLY

  1. Turn ignition switch OFF.
  2. Disconnect G sensor connector.
  3. Turn ignition switch ON.
  4. Check voltage between G sensor harness connector terminal and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 4.

NO >> GO TO 8.

4.CHECK CIRCUIT BETWEEN TCM AND G SENSOR (PART 1)

  1. Turn ignition switch OFF.
  2. Disconnect TCM connector.
  3. Check continuity between TCM harness connector terminals and G sensor harness connector terminals.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 5.

NO >> Repair or replace malfunctioning parts.

5.CHECK CIRCUIT BETWEEN TCM AND G SENSOR (PART 2)

Check continuity between TCM harness connector terminal and ground.

The inspection result normal?


The inspection result normal? Yes >> go to 6.

No >> repair or replace malfunctioning parts.

6.Check g sensor

  1. Remove g sensor. Refer to tm-265, "removal and installation".
  2. Connect the all connectors.
  3. Turn ignition switch on.
  4. Check voltage between TCM connector terminal and ground.

force : Direction of gravitational
force


Is the inspection result normal?


Is the inspection result normal? Yes >> go to 7.

No >> replace g sensor. Refer to tm-265, "removal and installation".

7.Calibration of g sensor (part 2)

With CONSULT


  1. Install G sensor. Refer to TM-265, "Removal and Installation".
  2. Select “Self Diagnostic Results” in “TRANSMISSION”.
  3. Touch “Erase”.

>> Perform “CALIBRATION OF G SENSOR”. Refer to TM-147, "Work Procedure".

8.CHECK SENSOR POWER SUPPLY CIRCUIT (PART 1)

  1. Turn ignition switch OFF.
  2. Disconnect TCM connector.
  3. Check continuity between TCM harness connector terminal and G sensor harness connector terminal

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 9.

NO >> Repair or replace malfunctioning parts.

9.CHECK SENSOR POWER SUPPLY CIRCUIT (PART 2)

Check continuity between TCM harness connector terminal and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> Repair or replace malfunctioning parts.

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