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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio, Visual & Navigation System (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> Multi Av (Av Control Unit) >> B1A03 Front Left Door Tweeter >> DTC Description

DTC Description

DTC DETECTION LOGIC 

DTC No. CONSULT screen terms(Trouble diagnosis content) DTC detection condition
B1A03-13 Front left door tweeter(Front tweeter LH) [OPEN] Diagnosis condition When ignition switch is ON.
Signal (terminal)
  • WOOFER FR LH+ (terminal 13)
  • WOOFER FR LH- (terminal 8)
Threshold Open
Diagnosis delay time 30 seconds or more
B1A03-1A [SHORT] Diagnosis condition When ignition switch is ON.
Signal (terminal)
  • WOOFER FR LH+ (terminal 13)
  • WOOFER FR LH- (terminal 8)
Threshold Short circuit
Diagnosis delay time 30 seconds or more
B1A03-11 [GND-SHORT] Diagnosis condition When ignition switch is ON.
Signal (terminal)
  • WOOFER FR LH+ (terminal 13)
  • WOOFER FR LH- (terminal 8)
Threshold Short to ground circuit
Diagnosis delay time 30 seconds or more
B1A03-12 [VB-SHOR] Diagnosis condition When ignition switch is ON.
Signal (terminal)
  • WOOFER FR LH+ (terminal 13)
  • WOOFER FR LH- (terminal 8)
Threshold Short to power supply circuit
Diagnosis delay time 30 seconds or more

POSSIBLE CAUSE 

FAIL-SAFE 

Front tweeter LH and front door speaker LH lower inoperative