How To Initiate Self-Diagnosis Mode

Turn ignition switch OFF.
While pressing the steering switch , turn ignition switch ON.

Fig 1: Display -- Combination Meter Self-Diagnosis Screen
Courtesy of NISSAN NORTH AMERICA, INC.

Fig 2: Identifying Steering Switch
Courtesy of NISSAN NORTH AMERICA, INC.
If the diagnosis function is activated with "trip A" displayed, the mileage on "trip A" is reset to "0000.0". (The same way for "trip B".)
Make sure that the trip meter displays "0000.0".
Press the steering switch at least 3 times. (Within 7 seconds after the ignition switch is turned ON.)
The combination meter is turned to self - diagnosis mode.
- Speedometer, tachometer, engine coolant temperature gauge, fuel gauge, and return to zero, simultaneously.
- All segments of the information display are displayed.
  
  Fig 3: Display -- Combination Meter Self-Diagnosis Screen
  Courtesy of NISSAN NORTH AMERICA, INC.
NOTE:
- Check the following items when the self - diagnosis mode of the combination meter does not start. Replace combination meter if the following items are normal.
  - Combination meter power supply and ground circuit.
  - Steering switch signal circuit and steering switch.
- If any of the dots are not displayed, replace combination meter.
Each meter activates by pressing the steering switch .

Fig 4: Identifying Combination Meter
Courtesy of NISSAN NORTH AMERICA, INC.
NOTE:
- If any of the meters or gauges is not activated, replace combination meter.
- The figure is reference.