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Home >> Infiniti >> 2015 >> QX80 Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio, Visual & Navigation System (BOSE Audio With Navigation) (Diagnostic Trouble Codes (DTCS) U1207-B272C, Symptom Tests And R & I) >> DTC/Circuit Diagnosis >> DTC U1684, U1687, U168C, U168F: Rear Door Speaker/Tweeter >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

DTC Display contents of CONSULT DTC detection condition Possible malfunction factor
U1684
U1687
2L - DOOR SPEAKER
[OPEN, SHORT, GND - SHORT or VB - SHOR]
When either one of the following items are detected:
  • sound signal circuits between BOSE amp. and rear door speaker LH are malfunctioning.
  • sound signal circuits between BOSE amp. and rear door tweeter LH are malfunctioning.
  • Sound signal circuits between BOSE amp. and rear door speaker LH.
  • Sound signal circuits between BOSE amp. and rear door tweeter LH.
U168C
U168F
2R - DOOR SPEAKER
[OPEN, SHORT, GND - SHORT or VB - SHOR]
When either one of the following items are detected:
  • sound signal circuits between BOSE amp. and rear door speaker RH are malfunctioning.
  • sound signal circuits between BOSE amp. and rear door tweeter RH are malfunctioning.
  • Sound signal circuits between BOSE amp. and rear door speaker RH.
  • Sound signal circuits between BOSE amp. and rear door tweeter RH.