DTC DETECTION LOGIC

DTC | Self-diagnosis name | DTC Detection Condition | Possible causes
P2849 | Shift fork "A" stuck | A DTC is set if the status of the sleeve A1 position of more than 1.3 mm (0.051 in) is detected for a certain period when the sleeve A1 position target is neutral. |

- 6th-Neutral position sensor
- Shift solenoid valve 1
- Shift solenoid valve 2
- Sequence solenoid valve
- Axis A feed pressure solenoid valve
- Harness or connector
  (Open or short in the 6th-Neutral position sensor circuit)
  (Open or short in the shift solenoid valve 1 circuit)
  (Open or short in the shift solenoid valve 2 circuit)
  (Open or short in the sequence solenoid valve circuit)
  (Open or short in the axis A feed pressure solenoid valve circuit)

DTC CONFIRMATION PROCEDURE
■ CAUTION ■

- If CONSULT-III is not available, “Diagnosis Procedure (GT-R certified NISSAN dealer)” must be performed before starting “DTC CONFIRMATION PROCEDURE”.
- If CONSULT-III is not available, never perform “DTC CONFIRMATION PROCEDURE” before completing the repair, which may cause secondary malfunction.
- Be careful of the driving speed.

1.PREPARATION BEFORE OPERATION (PART 1)
If another “DTC CONFIRMATION PROCEDURE” is performed just before the next test, turn the ignition switch OFF and wait for 10 seconds or more, then perform the next test.
>>GO TO 2.
2.PREPARATION BEFORE OPERATION (PART 2)
With CONSULT-III

1. Turn the ignition switch ON.
2. Select “FLUID TEMP” in “Data Monitor”.

Is the oil temperature −20°C (−4°F) or more?
YES>>GO TO 3.
NO>>Warm up the transmission.
3.PREPARATION BEFORE OPERATION (PART 3)
With CONSULT-III
Select “READ CLUTCH GEAR LEARNING DATA” in “Work support”.
Is the “6-N learning experienced” YES?
YES>>GO TO 4.
NO>>Perform “CLUTCH GEAR LEARNING”.
4.CONFIRMATION BEFORE OPERATION (PART 1)
With CONSULT-III
Select “SLEEVE A1 POSI” in “Data Monitor”.
Is the numeral value of the “SLEEVE A1 POSI” in the range between −1.7 and 1.8 mm (−0.067 and 0.071 in)?
YES>>GO TO 5.
NO>>GO TO 6.
5.CONFIRMATION BEFORE OPERATION (PART 2)
With CONSULT-III

1. Shift the shift lever to N position.
2. Start the engine.
3. Select “GEAR POSITION TEST” in “Work support”.
4. Select “GEAR6”.
   ■ CAUTION ■
   Never select “GEAR2”, “GEAR4” or “GEAR N”.

Does the sleeve A1 operate?
YES>>GO TO 6.
NO>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
6.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III

1. Shift the shift lever to the N position.
2. Start the engine and run at idle for 10 seconds or more.
3. Check “Self Diagnostic Result” of “TRANSMISSION”.

Is DTC P0798 or DTC P2849 detected?
YES-1 (DTC P0789 is detected).>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
YES-2 (DTC P2849 is detected).>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
NO>>Go to Intermittent Incident.