Nissan Sentra B18 (2020-2025) Service Manual: B1309 System on
Dtc Description
DTC Description
DTC DETECTION LOGIC
|
DTC No. |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
||
|---|---|---|---|---|
|
B1309–11 |
System ON (Amplifier ON circuit) |
[GND–SHOR] |
Diagnosis condition |
When ignition switch is ON. |
|
Signal (terminal) |
AMP ON (terminal 1) |
|||
|
Threshold |
– |
|||
|
Diagnosis delay time |
30 seconds or more |
|||
|
B1309–12 |
[VB–SHOR] |
Diagnosis condition |
When ignition switch is ON. |
|
|
Signal (terminal) |
AMP ON (terminal 1) |
|||
|
Threshold |
– |
|||
|
Diagnosis delay time |
30 seconds or more |
|||
POSSIBLE CAUSE
-
AMP ON short to ground, short to voltage
-
AV control unit
FAIL-SAFE
No sound from Bose speaker amp.
Confirmation Procedure
Confirmation Procedure
-
PERFORM DTC CONFIRMATION PROCEDURE
-
CONSULT-
Ignition switch ON.
-
Ignition switch OFF and wait at least 30 seconds.
-
Ignition switch ON and wait at least 30 seconds or more.
-
Select “Self Diagnostic Result” mode of “MULTI AV”.
-
Check DTC.
-
Is DTC B1309 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
-
CONSULT-
Ignition switch ON.
-
Ignition switch OFF and wait at least 30 seconds.
-
Ignition switch ON and wait at least 30 seconds or more.
-
Select “Self Diagnostic Result” mode of “MULTI AV”.
-
Check DTC.
-
Is DTC B1309–11 or 12 detected?
YES>>11 [GND–SHORT] – GO TO 2.
YES>>12 [VB–SHOR] – GO TO 3.
NO>>Refer to Intermittent Incident.
-
-
CHECK AMP ON CIRCUIT FOR SHORT TO GROUND
-
-
Ignition switch OFF.
-
Disconnect AV control unit connector and Bose speaker amp. connector.
-
Check the continuity between AV control unit connector and ground.
AV control unit
—
Continuity
Connector
Terminal
M103
1
Ground
No
-
Is the inspection result normal?
YES >>Replace AV control unit. Refer to Removal and Installation.
NO >>Repair or replace harness or connectors.
-
-
CHECK AMP ON CIRCUIT FOR SHORT TO POWER SUPPLY
-
-
Ignition switch OFF.
-
Disconnect AV control unit connector and Bose speaker amp. connector.
-
Ignition switch ON.
-
Check the voltage between AV control unit connector and ground.
AV control unit
(—)
Voltage
(Approx.)
(+)
Connector
Terminal
M103
1
Ground
0 V
-
Is the inspection result normal?
YES >>Replace AV control unit. Refer to Removal and Installation.
NO >>Repair or replace harness or connectors.
-
Other materials:
Power Supply and Ground Circuit
A/c Auto Amp.
Diagnosis Procedure
Diagnosis Procedure
CHECK A/C AUTO AMP. GROUND CIRCUIT
FOR OPEN
Ignition switch OFF.
Disconnect A/C auto amp. connector.
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Exploded View
Exploded View
1.
Air breather hose
2.
Transaxle assembly
A.
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B0050-29 Front Seat Belt Buckle Switch
Dtc Description
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen items
(Trouble diagnosis
content)
DTC detecting condition
...