Nissan Sentra B18 (2020-2025) Service Manual: B1328 External Microphone 1
Dtc Description
DTC Description
DTC DETECTION LOGIC
|
DTC No. |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
||
|---|---|---|---|---|
|
B1328–13 |
External Microphone 1 (Microphone) |
[OPEN] |
Diagnosis condition |
When ignition switch is ON. |
|
Signal (terminal) |
— |
|||
|
Threshold |
– |
|||
|
Diagnosis delay time |
30 seconds or more |
|||
|
B1328–11 |
[GND–SHORT] |
Diagnosis condition |
When ignition switch is ON. |
|
|
Signal (terminal) |
— |
|||
|
Threshold |
– |
|||
|
Diagnosis delay time |
30 seconds or more |
|||
|
B1328–12 |
[VB–SHOR] |
Diagnosis condition |
When ignition switch is ON. |
|
|
Signal (terminal) |
— |
|||
|
Threshold |
– |
|||
|
Diagnosis delay time |
30 seconds or more |
|||
POSSIBLE CAUSE
-
Microphone is not connected
-
Harness or connector
-
Microphone
FAIL-SAFE
Microphone is inoperative
Dtc Confirmation Procedure
DTC 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 B1328 detected?
YES>>Proceed to DTC Diagnosis Procedure.
NO>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>Confirmation after repair: Inspection End.
-
Diagnosis Procedure
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 B1328–11, 12 or 13 detected?
YES>>13 [OPEN], or 11 [GND-SHORT] – GO TO 2.
YES>>12 [VB–SHOR] – GO TO 3.
NO>>Refer to Intermittent Incident.
-
-
CHECK MICROPHONE CIRCUITS FOR OPEN OR SHORT TO GROUND
-
-
Ignition switch OFF.
-
Disconnect AV control unit connector and microphone connector.
-
Check the continuity between AV control unit connector and microphone connector.
AV control unit
Microphone
Continuity
Connector
Terminal
Connector
Terminal
M104
21
R17
1
Yes
22
4
42
2
50
5
-
Check the continuity between AV control unit connector and ground.
AV control unit
—
Continuity
Connector
Terminal
M104
21
Ground
Yes
22
50
-
Is the inspection result normal?
YES >>Replace microphone. Refer to Removal and Installation.
NO >>Repair or replace harness or connectors.
-
-
CHECK MICROPHONE CIRCUITS FOR SHORT TO POWER SUPPLY
-
-
Ignition switch OFF.
-
Disconnect AV control unit connector and microphone connector.
-
Ignition switch ON.
-
Check the voltage between AV control unit connector and ground.
AV control unit
(−)
Voltage
(Approx.)
(+)
Connector
Terminal
M104
21
Ground
0 V
22
42
50
-
Is the inspection result normal?
YES >>Replace microphone. Refer to Removal and Installation.
NO >>Repair or replace harness or connectors.
-
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REMOVAL
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Remove
trunk lid dampener bolts and trunk lid dampener. .
Disconnect
the harness connector from the trunk lid opener request
switch.
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DTC DETECTION LOGIC
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CONSULT screen terms
(Trouble diagnosis
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DTC detection
condition
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