P0729 SLEEVE A1 FUNCTION

NOTE：

• If DTC P0700 is detected, first diagnose the DTC P0700. Refer to DTC Logic (GT-R certified NISSAN dealer).
  
• If DTC P0715 is detected, first diagnose the DTC P0715. Refer to DTC Logic (GT-R certified NISSAN dealer).
  

*: A DTC is displayed when F or G in the DTC detection conditions is detected.

DTC	Self-diagnosis name	DTC Detection Condition		Possible causes
P0729	6th-Neutral position sensor voltage	A	A DTC is set if the 6th-Neutral position sensor voltage value received by TCM is more than 4,700 mV. A DTC is set if the 6th-Neutral position sensor voltage value received by TCM is less than 300 mV.	6th-Neutral position sensor TCM Harness or connector (Open or short in the 6th-Neutral position sensor circuit)
	Sleeve A1 function (long time release)	B	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)
	Sleeve A1 function (long time engagement)	C	A DTC is set if the status of the sleeve A1 position of less than 1.8 mm (0.071 in) is detected for a certain period of time when the sleeve A1 position target is on the 6th gear side.
P0729	Sleeve A1 function (poor neutral hold)	D	A DTC is set if the status of the sleeve A1 position of more than 1.7 mm (0.067 in) or less than −1.6 mm (−0.063 in) is detected for a certain period of time when the sleeve A1 position target is neutral with the sleeve A2 engaged in the 2nd or 4th gear.	6th-Neutral position sensor Shift solenoid valve 1 Shift solenoid valve 2 Sequence 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)
	Sleeve A1 function (poor engaged gear)	E	A DTC is set if the sleeve A1 position is 7.1 mm (0.28 in) or less and 1.7 mm (0.067 in) or more when the sleeve A1 position target is on the 6th gear side.	Shift solenoid valve 1 Shift solenoid valve 2 Axis A feed pressure solenoid valve Sleeve A1 related part Harness or connector (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 axis A feed pressure solenoid valve circuit)
	Sleeve A1 function (gear release)*	F	A DTC is set if the status 1 or 2 below is detected with the sleeve A1 engaged in the 6th gear. The difference between the clutch A speed calculated from the output shaft speed sensor value and clutch A speed sensor value is 1,000 rpm or more. The difference between the clutch A speed calculated from the vehicle speed signal (meter) (CAN signal) and clutch A speed sensor value is 1,000 rpm or more.	Clutch A speed sensor Sleeve A1 related part Harness or connector (Open or short in the clutch A speed sensor circuit)
		G	A DTC is set if the sleeve A1 and A2 positions are not in 6th gear during driving in the 6th gear.	Shift solenoid valve 1 Sleeve A1 related part Harness or connector (Open or short in the shift solenoid valve 1 circuit)

■ 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.