Nissan Maxima Service and Repair Manual: U121D AV control unit

U1218 AV control unit

DTC Logic U1219 AV CONTROL UNIT DTC Logic U121A AV CONTROL UNIT DTC Logic   U121B AV CONTROL UNIT DTC Logic U121C AV CONTROL UNIT DTC Logic ...

U1227 AV control unit

DTC Logic Diagnosis Procedure 1.CHECK PLAYBACK OF A DISK (DVD) U1228 AV CONTROL UNIT DTC Logic DTC DETECTION LOGIC U1229 AV CONTROL UNIT DTC Logic DTC DETECTION LOGIC ...

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System malfunction
If the PFCW system malfunctions, it will be turned off automatically, a chime will sound, the FEB system warning light (orange) will illuminate and the warning message [Malfunction] will appear in the vehicle information display. Action to take If the warning light (orange) comes on, stop the ...

P0128 thermostat function
DTC Logic DTC DETECTION LOGIC NOTE: If DTC P0128 is displayed with DTC P0300, P0301, P0302, P0303, P0304, P0305 or P0306, first perform the trouble diagnosis for DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306. Engine coolant temperature has not risen enough to open the thermostat even ...

Diagnosis and repair workflow
Work Flow OVERALL SEQUENCE DETAILED FLOW\ 1.CHECK SYMPTOM Check the malfunction symptoms by performing the following items. Interview the customer to obtain the malfunction information (conditions and environment when the malfunction occurred). Check the symptom. 2.SELF-DIAGNOSIS ( ...