Display Specifications
Entry LCD lighting/lights-outs mode (press No. 3 button)
This diagnostic screen checks for segments that may be dead (off) or stuck on.
All the segments in the display must appear. If there are dead segments, replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).
When the display segments are all on, press the No. 3 button. The entire display must turn black. If any segments are stuck on, replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).
Illumination level (for the gauge illumination) indication (press No. 4 button)
This diagnostic screen checks the gauge illumination input
With the headlights on, you should see a values between 1 (max low) and 22 (max high).
When you dim and brighten the gauge with the dimmer knob, you should see this value change accordingly. If it doesn't, check for B-CAN DTCs.
Vehicle speed pulse indication (press No. 5 button)
This diagnostic screen checks that the audio unit is receiving the VSP indication.
When you drive the vehicle, the VSP indicates the vehicle speed in km/h.
Reception level indication (Push and hold 5 sec FM button)
This diagnostic screen checks the audio units reception level that can used in diagnosis check the audio reception quality.
To check AM or FM reception, press and hold the applicable band button for 5 seconds, then release. The reception level is displayed in decibels (db). You can check the reception with or without the amplifier. Press the A. SEL button to toggle between turning the amplifier on and off. You can change the station with the tuner button to check the reception level of any specific radio station. Compare this value with a known-good vehicle to check the audio unit reception.