1.CHECK CAN COMMUNICATION CIRCUIT Refer to Trouble Diagnosis Flow Chart. Is the inspection result normal? YES >>GO TO 2. NO >>Repair or replace damaged parts.
2.CHECK CLUTCH A SPEED SENSOR CIRCUIT
Refer to Diagnosis Procedure (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES >>GO TO 3.
NO >>Repair or replace damaged parts.
3.CHECK CLUTCH B SPEED SENSOR CIRCUIT
Refer to Diagnosis Procedure (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES >>GO TO 4.
NO >>Repair or replace damaged parts.
4.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.
2. Check ground connections B31 and ground cable connections. Refer to “Ground Inspection” in Circuit Inspection.

Is the inspection result normal?
YES >>GO TO 5.
NO >>Repair or replace damaged parts.
5.CHECK TCM INPUT SIGNAL CIRCUIT

1. Start engine.
2. Check voltage between TCM vehicle side harness connector terminals.

   TCM vehicle side harness connector | Condition | Voltage (Approx.)
   Connector | Terminal
   B45 | 31 | 4 | After engine warming up | At idle NOTE： The pulse period changes depending on the idle speed. | 1 V*
   Engine speed: 2,000 rpm | 1 V*
   *: Average voltage value of pulse waveform (The correct waveform is measured with an oscilloscope)

Is the inspection result normal?
YES>>GO TO 8.
NO >>GO TO 6.
6.CHECK HARNESS BETWEEN TCM AND ECM (PART 1)

1. Turn ignition switch OFF.
2. Disconnect TCM harness connectors and ECM harness connectors.
3. Check continuity between TCM vehicle side harness connector terminals and transmission unit vehicle side harness connector terminals.

   TCM vehicle side harness connector | ECM vehicle side harness connector | Continuity
   Connector | Terminal | Connector | Terminal
   B45 | 31 | M107 | 113 | Existed

Is the inspection result normal?
YES>>GO TO 7.
NO >>Repair or replace damaged parts.
7.CHECK HARNESS BETWEEN TCM AND ECM (PART 2)
Check continuity between TCM vehicle side harness connector terminals and ground.

TCM vehicle side harness connector | Ground | Continuity
Connector | Terminal
B45 | 31 | Ground | Not existed

Is the inspection result normal?
YES>>GO TO 8.
NO >>Repair or replace damaged parts.
8.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END