P0797 AXIS A FEED PRESSURE SOLENOID VALVE FUNCTION

TRANSMISSION: GR6Z30A

P0797

Description
DTC Logic
Diagnosis Procedure

Description

This solenoid valve builds up the source pressure for the gear operation actuators for even number gears and for the clutch A solenoid valve based on the signals from TCM. The solenoid valves adjust the source pressure to drive the gears and clutches.

DTC Logic

DTC DETECTION LOGIC

NOTE：
If DTC P0840 is detected, first diagnose the DTC P0840. Refer to DTC Logic (GT-R certified NISSAN dealer).

DTC	Self-diagnosis name	DTC detection condition	Possible cause
P0797	Axis A feed pressure solenoid valve function	A DTC is set if the clutch A pressure sensor value is less than 0.4 MPa (4.08 kg/cm², 58 psi) when the axis A feed pressure target value is 0.4 MPa (4.08 kg/cm², 58 psi) or more. A DTC is set if the clutch A pressure sensor value is more than 0.2 MPa (2.04 kg/cm², 29 psi) when the axis A feed pressure target value is 0.1 MPa (1.02 kg/cm², 14.5 psi) or less.	Axis A feed pressure solenoid valve Clutch A solenoid valve Clutch A pressure sensor Clutch A oil passage Harness or connector (Open or short in the axis A feed pressure solenoid valve circuit) (Open or short in the clutch A solenoid valve circuit) (Open or short in the clutch A pressure sensor circuit)

DTC CONFIRMATION PROCEDURE

1.PREPARATION BEFORE OPERATION

2.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure

1.CHECK AXIS A FEED PRESSURE SOLENOID VALVE CIRCUIT

2.CHECK CLUTCH A SOLENOID VALVE CIRCUIT

3.CHECK CLUTCH A PRESSURE SENSOR CIRCUIT

4.CHECK GROUND CONNECTION

5.CHECK INTERMITTENT INCIDENT