DTC DETECTION LOGIC

DTC | Self-diagnosis name | DTC detection condition | Possible cause
P0725 | Engine speed input circuit | A DTC is set if the engine speed (CAN signal) is less than 200 rpm when the engine speed (pulse signal) is 700 rpm or more. | Harness or connector (CAN communication line is open or shorted)
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 engaged. |

- Clutch A speed sensor
- Harness or connector
  (Open or short in the clutch A speed sensor circuit)
  (CAN communication line is open or shorted)

A DTC is set if the difference between the engine speed (CAN signal) and clutch B speed sensor value is 1,000 rpm or more with clutch B engaged. |

- Clutch B speed sensor
- Harness or connector
  (Open or short in the clutch B speed sensor circuit)
  (CAN communication line is open or shorted)

A DTC is set if the engine speed (pulse signal) is less than 500 rpm when the engine speed (CAN signal) is 1,000 rpm or more. | Harness or connector (Open or short in the circuit between ECM and TCM)

DTC CONFIRMATION PROCEDURE
■ CAUTION ■
Be careful of the driving speed.
1.PREPARATION BEFORE OPERATION
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.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III

1. Start the engine and run at idle for 5 seconds or more.
2. Check “Self Diagnostic Result” of “TRANSMISSION”.

Is DTC P0725 detected?
YES>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
NO>>GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III

1. Select “RANGE” and “ENGINE SPEED” in “Data Monitor”.
2. Maintain the following conditions for 5 seconds or more.

   RANGE | : P
   ENGINE SPEED | : 1,000 rpm or more

3. Check “Self Diagnostic Result” of “TRANSMISSION”.

Is DTC P0725 detected?
YES>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
NO>>GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III

1. Select “RANGE”, “GEAR”, “ACCEL POSI SEN 1” and “VEHICLE SPEED” in “Data Monitor”.
2. Run the vehicle and maintain the following conditions for 5 seconds or more.

   RANGE | : M
   GEAR | : 1
   ACCEL POSI SEN 1 | : 0.0/8
   VEHICLE SPEED | : 20 km/h (13 MPH) or more

3. Check “Self Diagnostic Result” of “TRANSMISSION”.

Is DTC P0725 detected?
YES>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
NO>>GO TO 5.
5.DTC CONFIRMATION PROCEDURE
With CONSULT-III

1. Select “RANGE”, “GEAR”, “ACCEL POSI SEN 1” and “VEHICLE SPEED” in “Data Monitor”.
2. Run the vehicle and maintain the following conditions for 5 seconds or more.

   RANGE | : M
   GEAR | : 2
   ACCEL POSI SEN 1 | : 0.0/8
   VEHICLE SPEED | : 35 km/h (22 MPH) or more

3. Check “Self Diagnostic Result” of “TRANSMISSION”.

Is DTC P0725 detected?
YES>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
NO>>Go to Intermittent Incident.