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 item
DTC detection condition
Possible cause
P0746
Monitor clutch A solenoid valve oil pressure difference
A
A DTC is set if the clutch A pressure sensor value is higher than the clutch A pressure target value by 0.2 MPa (2.04 kg/cm2, 29 psi) or more.
  • Clutch A solenoid valve
  • Clutch A pressure sensor
  • Clutch A oil passage
  • Harness or connector
    (Open or short in the clutch A solenoid valve circuit)
    (Open or short in the clutch A pressure sensor circuit)
Clutch A solenoid valve oil pressure output low
B
A DTC is set if the difference between the engine speed (CAN signal) and clutch A speed sensor value is 1,000 rpm or more with clutch A.
  • Clutch A solenoid valve
  • Clutch A pressure sensor
  • Axis A feed pressure solenoid valve
  • Line pressure solenoid valve
  • Oil passage between line pressure and clutch A pressure
  • Harness or connector
    (Open or short in the clutch A solenoid valve circuit)
    (Open or short in the clutch A pressure sensor circuit)
    (Open or short in the axis A feed pressure solenoid valve circuit)
    (Open or short in the line pressure solenoid valve circuit)

 
 DTC CONFIRMATION PROCEDURE

 
 1.PREPARATION BEFORE OPERATION
 
 2.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION A
 
 3.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION B