1.CHECK DTC WITH TCM Check “Self diagnostic result” with CONSULT-III for TCM. Are any DTC detected? YES>>Refer to DTC Logic. NO>>GO TO 2.
2.CHECK TCM CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect TCM connector and BCM connector.
3. Check continuity between TCM harness connector and BCM harness connector.

   TCM | BCM | Continuity
   Connector | Terminal | Connector | Terminal
   B45 | 19 | M122 | 140 | Existed

4. Check continuity between TCM harness connector and ground.

   TCM | Ground | Continuity
   Connector | Terminal
   B45 | 19 | Not existed

Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair or replace harness.
3.CHECK TCM OUTPUT

1. Connect TCM connector.
2. Check voltage between BCM harness connector and ground.

   (+) | (–) | Condition | Voltage (V) (Approx.)
   BCM
   Connector | Terminal
   M122 | 140 | Ground | Shift lover | P or N position | Battery voltage
   Other than above | 0

Is the inspection result normal?
YES>>Replace BCM. Refer to Exploded View.
NO>>Replace TCM. Refer to Removal and Installation (GT-R certified NISSAN dealer).