Check the signal between power steering control unit harness connector and ground with oscilloscope.
Power steering control unit
| —
| Condition
| Voltage (Approx.)
|
Connector
| Terminal
|
M108
| 10
| Ground
| Engine is running
- Warm-up condition
- Idle speed
|

|
Engine is running
- Warm-up condition
- Engine speed: Approx. 2,000 rpm
|

|
Is the inspection result normal?
YES
>>GO TO 5.NO
>>Replace power steering control unit. Refer to
Exploded View (GT-R certified NISSAN dealer).