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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Audio, Visual & Navigation System (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> Multi Av (Av Control Unit) >> U1300 Av Comm Circuit >> DTC Description
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DTC Description

DTC DETECTION LOGIC 

DTC No. CONSULT screen terms(Trouble diagnosis content) DTC detection condition
U1300-01 AV COMM CIRCUIT(AV communication circuit) [-] Diagnosis condition When ignition switch is ON.
Signal (terminal) AV communication signal
Threshold Transmit or receive is abnormal
Diagnosis delay time 30 seconds or more

POSSIBLE CAUSE 

FAIL-SAFE 

The system of ECU which detected abnormalities does not operate.