Nissan Sentra B18 (2020-2025) Service Manual / Driver Information & Multimedia / Audio, Visual & Navigation System :: Display Audio with Bose with 8" Color Display / Dtc/circuit Diagnosis / U1600 Front Left Door Speaker Out

Nissan Sentra B18 (2020-2025) Service Manual: U1600 Front Left Door Speaker Out

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)		DTC detection condition
U1600–13	Front left door speaker out (Front door speaker LH)	OPEN	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	FR DR SP LH+ (terminal 2) FR DR SP LH− (terminal 6)
			Threshold	–
			Diagnosis delay time	30 seconds or more
U1600–1A		SHORT	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	FR DR SP LH+ (terminal 2) FR DR SP LH− (terminal 6)
			Threshold	–
			Diagnosis delay time	30 seconds or more
U1600–11		GND-SHORT	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	FR DR SP LH+ (terminal 2) FR DR SP LH− (terminal 6)
			Threshold	–
			Diagnosis delay time	30 seconds or more
U1600–12		VB-SHOR	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	FR DR SP LH+ (terminal 2) FR DR SP LH− (terminal 6)
			Threshold	–
			Diagnosis delay time	30 seconds or more

POSSIBLE CAUSE

FR DR SP LH+ open, short, short to ground, short to voltage
FR DR SP LH− open, short, short to ground, short to voltage
Front door speaker LH
Bose speaker amp.

FAIL-SAFE

—

Confirmation Procedure

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE
1. CONSULT
  1. Ignition switch ON.
  2. Ignition switch OFF and wait at least 30 seconds.
  3. Ignition switch ON and wait at least 30 seconds or more.
  4. Select “Self Diagnostic Result” mode of “AUDIO AMP.”.
  5. Check DTC.
Is DTC U1600 detected?
YES>>
Refer to DTC Diagnosis Procedure.
NO>>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>
Confirmation after repair: Inspection End

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

DETERMINE MALFUNCTION TYPE
1. CONSULT
  1. Ignition switch ON.
  2. Ignition switch OFF and wait at least 30 seconds.
  3. Ignition switch ON and wait at least 30 seconds or more.
  4. Select “Self Diagnostic Result” mode of “AUDIO AMP.”.
  5. Check DTC.
Is DTC U1600–11, 12, 13 or 1C detected?
YES >>
13 [OPEN], or 11 [GND–SHORT] – GO TO 2.
YES >>
1C [SHORT] – GO TO 3.
YES >>
12 [VB–SHOR] – GO TO 4.
NO >>
Refer to Intermittent Incident.

CHECK SOUND SIGNAL CIRCUITS FOR OPEN OR SHORT TO GROUND

Ignition switch OFF.
Disconnect Bose speaker amp. connector and front door speaker LH connector.

Check the continuity between Bose speaker amp. connector and front door speaker LH connector.

Bose speaker amp.		Front door speaker LH		Continuity
Connector	Terminal	Connector	Terminal	Continuity
B96	2	D13	1	Yes
B96	6	D13	2	Yes

Check the continuity between Bose speaker amp. connector and ground.

Bose speaker amp.		—	Continuity
Connector	Terminal	—	Continuity
B96	2	Ground	No
B96	6	Ground	No

Is the inspection result normal?

YES >>

GO TO 5.

NO >>

Repair or replace harness or connectors.

CHECK SOUND SIGNAL CIRCUITS FOR SHORT

Ignition switch OFF.
Disconnect Bose speaker amp. connector and front door speaker LH connector.

Check the continuity between the terminals of Bose speaker amp. connector.

Bose speaker amp.			Continuity
Connector	Terminals		Continuity
B96	2	6	No

Is the inspection result normal?

YES >>

GO TO 5.

NO >>

Repair or replace harness or connectors.

CHECK SOUND SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY

Ignition switch OFF.
Disconnect Bose speaker amp. connector and front door speaker LH connector.
Ignition switch ON.

Check the voltage between Bose speaker amp. connector and ground.

Bose speaker amp.		(—)	Voltage (Approx.)
(+)
Connector	Terminal
B96	2	Ground	0 V
B96	6	Ground	0 V

Is the inspection result normal?

YES >>

GO TO 5.

NO >>

Repair or replace harness or connectors.

CHECK FRONT DOOR SPEAKER LH SIGNAL

Connect Bose speaker amp. connector and front door speaker LH connector.
Ignition switch ON.
AV control unit ON.

Check signal between the terminals of Bose speaker amp. connector.

Bose speaker amp.			Condition
Connector	(+)	(−)
Connector	Terminals
B96	2	6	Audio signal output

Is the inspection result normal?

YES >>

Replace front door speaker LH. Refer to Removal and Installation.

NO >>

Replace Bose speaker amp. Refer to Removal and Installation.

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