Trouble Diagnosis Chart by Symptom

WARNING: This page is about a different car, the 2006 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

PROBLEM SYMPTOM CHART

Symptom	Suspect Systems and reference
No screen is shown.	Refer to , "POWER SUPPLY AND GROUND CIRCUIT CHECK FOR MONOCHROME DISPLAY UNIT " (with monochrome display unit) or , "POWER SUPPLY AND GROUND CIRCUIT CHECK FOR COLOR DISPLAY UNIT " (with color display unit). If above is normal, replace display unit.
Screen does not switch to nighttime mode after the lighting switch is turned to 1st.	Refer to , "ILLUMINATION SIGNAL CHECK (WITH MONOCHROME DISPLAY UNIT) " (with monochrome display unit) or , "ILLUMINATION SIGNAL CHECK FOR DISPLAY CONTROL UNIT " (with color display unit). If above is normal, replace display unit.
TRIP and FUEL ECON screen do not appear.	Refer to , "IGNITION SIGNAL CHECK (WITH MONOCHROME DISPLAY UNIT) " (with monochrome display unit) or , "IGNITION SIGNAL CHECK FOR DISPLAY CONTROL UNIT " (with color display unit). If above is normal, replace display unit.
Trip odometer (DIST) is not added up. Average vehicle speed (AVG) is not displayed.	Refer to , "VEHICLE SPEED SIGNAL INSPECTION " (with monochrome display unit) or , "VEHICLE SPEED SIGNAL CHECK FOR DISPLAY CONTROL UNIT " (with color display unit). If above is normal, replace display unit.
Average fuel consumption (AVG) is not displayed.	Refer to , "VEHICLE SPEED SIGNAL INSPECTION " (with monochrome display unit) or , "VEHICLE SPEED SIGNAL CHECK FOR DISPLAY CONTROL UNIT " (with color display unit). Refer to , "CAN COMMUNICATION LINE CHECK (WITH MONOCHROME DISPLAY UNIT) " (with monochrome display unit) or , "CAN COMMUNICATION LINE CHECK (WITH COLOR DISPLAY UNIT) " (with color display unit). If above is normal, replace display unit.
Distance to empty (DTE) is not displayed.	Check if speedometer operates. If it does not operate, go to , "VEHICLE SPEED SIGNAL INSPECTION " (with monochrome display unit) or , "VEHICLE SPEED SIGNAL CHECK FOR DISPLAY CONTROL UNIT " (with color display unit). Check if fuel gauge operates. If it does not operate, go to , "FUEL LEVEL SENSOR UNIT INSPECTION ". Refer to , "CAN COMMUNICATION LINE CHECK (WITH MONOCHROME DISPLAY UNIT) " (with monochrome display unit) or , "CAN COMMUNICATION LINE CHECK (WITH COLOR DISPLAY UNIT) " (with color display unit). If above is normal, replace display unit.
Door warning screen does not appear.	Refer to , "VEHICLE SPEED SIGNAL INSPECTION " (with monochrome display unit) or , "VEHICLE SPEED SIGNAL CHECK FOR DISPLAY CONTROL UNIT " (with color display unit). Refer to , "CAN COMMUNICATION LINE CHECK (WITH MONOCHROME DISPLAY UNIT) " (with monochrome display unit) or , "CAN COMMUNICATION LINE CHECK (WITH COLOR DISPLAY UNIT) " (with color display unit). If above is normal, replace display unit.
AV switch and all switch operation are not possible. (Do not start self-diagnosis.)	Refer to , "POWER SUPPLY AND GROUND CIRCUIT CHECK FOR AV SWITCH ". Refer to , "AV SWITCH SELF-DIAGNOSIS FUNCTION ". Refer to , "AV COMMUNICATION LINE CHECK (WITH MONOCHROME DISPLAY UNIT) " (with monochrome display unit) or , "AV COMMUNICATION LINE CHECK (BETWEEN DISPLAY CONTROL UNIT AND AV SWITCH) " (with color display unit). If above is normal, replace display unit.
Audio operation is not possible.	Refer to , "AV SWITCH SELF-DIAGNOSIS FUNCTION ". Refer to , "AUDIO COMMUNICATION LINE CHECK (WITH MONOCHROME DISPLAY UNIT) " (with monochrome display unit) or , "AUDIO COMMUNICATION LINE CHECK (BETWEEN DISPLAY CONTROL UNIT AND AUDIO UNIT) " (with color display unit).
Operating screen for audio and A/C is not displayed when showing NAVI screen.	Refer to , "OPERATING SCREEN FOR AUDIO AND A/C IS NOT DISPLAYED WHEN SHOWING NAVI SCREEN ".
Previous vehicle conditions are not stored.	Refer to , "PREVIOUS VEHICLE CONDITIONS ARE NOT STORED ".