DTC DETECTION LOGIC

NOTE:
If DTC U1000 is detected, first diagnose the DTC U1000. Refer to DTC Logic (GT-R certified NISSAN dealer).

DTC
Self-diagnosis name
DTC detection condition
Possible cause
P0720
Output shaft speed CAN signal compatibility *1
A
A DTC is set if the status 1 or 2 below is detected with an even gear engaged.
  1. The difference between the output shaft speed sensor value and the output shaft speed converted from the vehicle speed signal (meter) (CAN signal) is 1,000 rpm or more.
  2. The difference between the output shaft speed converted from the vehicle speed signal (meter) (CAN signal) and the output shaft speed converted from the clutch A speed is 1,000 rpm or more.
  • Combination meter
  • ABS actuator and electric unit (control unit)
  • Wheel sensor
  • Harness or connector
    (CAN communication line is open or shorted)
    (Open or short in the wheel speed sensor circuit)
B
A DTC is set if the status 1 or 2 below is detected with an odd gear engaged.
  1. The difference between the output shaft speed sensor value and the output shaft speed converted from the vehicle speed signal (meter) (CAN signal) is 1,000 rpm or more.
  2. The difference between the output shaft speed converted from the vehicle speed signal (meter) (CAN signal) and the output shaft speed converted from the clutch B speed is 1,000 rpm or more.
Output shaft speed pulse signal compatibility *2
C
A DTC is set if the status 1 or 2 below is detected with an even gear engaged.
  1. The difference between the output shaft speed sensor value and the output shaft speed converted from the vehicle speed signal (meter) (CAN signal) is 1,000 rpm or more.
  2. The difference between the output shaft speed sensor value and the output shaft speed converted from the clutch A speed is 1,000 rpm or more.
  • Output shaft speed sensor
  • Harness or connector
    (Open or shorted in the output shaft speed sensor circuit)
D
A DTC is set if the status 1 or 2 below is detected with an odd gear engaged.
  1. The difference between the output shaft speed sensor value and the output shaft speed converted from the vehicle speed signal (meter) (CAN signal) is 1,000 rpm or more.
  2. The difference between the output shaft speed sensor value and the output shaft speed converted from the clutch B speed is 1,000 rpm or more.
  • *1: A DTC is displayed when A or B in the DTC detection conditions is detected.
  • *2: A DTC is displayed when C or D in the DTC detection conditions is detected.

 
 DTC CONFIRMATION PROCEDURE

■ CAUTION ■
Be careful of the driving speed.
 
 1.PREPARATION BEFORE OPERATION
 
 2.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION A, B
 
 3.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION C, D