1.PERFORM COMBINATION METER SELF-DIAGNOSIS With CONSULT-III

1. Turn the ignition switch ON.
2. Perform “METER/M&A” self-diagnosis. Refer to CONSULT-III Function (METER/M&A).

Is any DTC detected?
YES>>Check the DTC.
NO >>GO TO 2.
2.CHECK HARNESS BETWEEN COMBINATION METER AND POWER STEERING CONTROL UNIT

1. Turn the ignition switch OFF.
2. Disconnect combination meter harness connector.
3. Disconnect power steering control unit harness connector.
4. Check the continuity between combination meter harness connector and power steering control unit harness connector.

   Combination meter | Power steering control unit | Continuity
   Connector | Terminal | Connector | Terminal
   M53 | 12 | M108 | 8 | Existed

5. Check the continuity between power steering control unit harness connector and ground.

   Power steering control unit | — | Continuity
   Connector | Terminal
   M108 | 8 | Ground | Not existed

Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair or replace error-detected parts.
3.CHECK VEHICLE SPEED SIGNAL (1)

1. Connect combination meter harness connector.
2. Check the combination meter input/output standard values. Refer to Reference Value.

Is the inspection result normal?
YES>>GO TO 4.
NO >>Replace combination meter Refer to Exploded View.
4.CHECK VEHICLE SPEED SIGNAL (2)

1. Turn the ignition switch OFF.
2. Connect power steering control unit harness connector.
3. Check the signal between power steering control unit harness connector and ground with oscilloscope.

   Power steering control unit | — | Condition | Voltage (Approx.)
   Connector | Terminal
   M108 | 8 | Ground | Vehicle speed: 40 km/h (25 MPH) ■ CAUTION ■ Check air pressure of tire under standard condition. | NOTE： The maximum voltage varies depending on the specification (destination unit).

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

- Check the power steering control unit pin terminals for damage or loose connection with harness connector.
- Check the combination meter pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?
YES>>INSPECTION END
NO>>Repair or replace error-detected parts.