1.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 2.
NO >>Repair or replace damaged parts.
2.CHECK TCM OUTPUT SIGNAL CIRCUIT
Check voltage between TCM vehicle side harness connector terminals.

TCM vehicle side harness connector | Condition | Voltage (Approx.)
Connector | Terminal | Connector | Terminal
B46 | 76 | B45 | 4 | Ignition switch ON | 5 V
Ignition switch OFF | 0 V

Is the inspection result normal?
YES>>GO TO 3.
NO >>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
3.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 | Connector | Terminal
   B46 | 72 | B45 | 4 |
   - M range, 2nd gear
   - Engine speed: 2,000 rpm

Is the inspection result normal?
YES>>GO TO 4.
NO >>GO TO 5.
4.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END
5.CHECK HARNESS BETWEEN TCM AND TRANSMISSION (CLUTCH A SPEED SENSOR) (PART 1)
Check continuity between TCM vehicle side harness connector terminals and transmission unit vehicle side harness connector terminals.

TCM vehicle side harness connector | Transmission unit vehicle side harness connector | Continuity
Connector | Terminal | Connector | Terminal
B46 | 68 | B49 | 29 | Existed
72 | 34
76 | 28

Is the inspection result normal?
YES>>GO TO 6.
NO >>Repair or replace damaged parts.
6.CHECK HARNESS BETWEEN TCM AND TRANSMISSION (CLUTCH A SPEED SENSOR) (PART 2)
Check continuity between TCM vehicle side harness connector terminals and ground.

TCM vehicle side harness connector | Ground | Continuity
Connector | Terminal
B46 | 68 | Ground | Not existed
72
76

Is the inspection result normal?
YES>>GO TO 7.
NO >>Repair or replace damaged parts.
7.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
Is the inspection result normal?
YES>>Replace transmission assembly. Refer to Exploded View (GT-R certified NISSAN dealer).
NO >>Repair or replace damaged parts.