How to apply the self-diagnostic functions (without Navigation) Turn the ignition switch to ACC (I) or ON (II). While holding down the up of both ‘‘REW'' and ‘‘DISK+'' buttons simultaneously, press the power switch. The following BUS communication DTC will appear on the audio unit display.
By turning on a switch while the DTC is displayed, the input will trigger the DTC mode that is assigned to that switch. PLAY/PROG switch Entire LCD lighting mode: Lighting the entire LCD to show the presence or absence of an LCD failure. NR switch Entire LCD lights-out mode: Turning off the entire LCD to show the presence or absence of an LCD failure. DISK+switch Display I2C-BUS communication verification status: To display the validity verification of the communication among the DISP, EEPROM and TUNER. DTC mode will cancel when the audio main power switch is turned OFF or the ignition switch is turned OFF.