Nissan Sentra B18 (2020-2025) Service Manual: B20be-11 Battery Temperature Sensor
Dtc Description
DTC Description
DTC DETECTION LOGIC
|
DTC No. |
CONSULT screen items (Trouble diagnosis content) |
DTC Detection Condition |
|
|---|---|---|---|
|
B20BE–11 |
BATTERY TEMPERATURE SENSOR (Battery temperature sensor) |
Diagnosis condition |
When ignition switch is ON. |
|
Signal (terminal) |
Battery temperature sensor signal |
||
|
Threshold |
Battery temperature sensor circuit is shorted to ground. |
||
|
Diagnosis delay time |
5 seconds or more. |
||
POSSIBLE CAUSE
-
Harness or connectors
-
Battery current sensor input signal (temperature) circuit is shorted (Ground)
-
-
Battery current sensor
FAIL-SAFE
—
Confirmation Procedure
Confirmation Procedure
-
PERFORM COMPONENT FUNCTION CHECK
-
CONSULT-
Ignition ON, and wait for 5 seconds or more.
-
Select “Self Diagnostic Result” mode of “IPDM E/R”.
-
Is the inspection result normal?
YES>>To check malfunction symptom before repair: Refer to Intermittent Incident.
YES>>Confirmation after repair: Inspection End.
NO>>Refer to DTC Diagnosis Procedure.
-
Dtc Diagnosis Procedure
DTC Diagnosis Procedure
-
CHECK BATTERY CURRENT SENSOR POWER
-
-
Ignition switch OFF.
-
Disconnect battery current sensor connector.
-
Ignition switch ON.
-
Check the voltage between battery current sensor harness connector and ground.
(+)
(-)
Voltage
(Approx.)
Battery current sensor
Connector
Terminal
E39
4
Ground
4 – 6 V
-
Is the inspection result normal?
YES >>GO TO 3.
NO >>GO TO 2.
-
-
CHECK BATTERY CURRENT SENSOR POWER CIRCUIT
-
-
Ignition switch OFF.
-
Disconnect IPDM E/R connector.
-
Check the continuity between battery current sensor harness connector and IPDM E/R harness connector.
Battery current sensor
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
E39
4
F98
95
Yes
-
Check the continuity between battery current sensor harness connector and ground.
Battery current sensor
—
Continuity
Connector
Terminal
E39
4
Ground
No
-
Is the inspection result normal?
YES >>Replace IPDM E/R. Refer to Removal and Installation.
NO >>Repair or replace harness.
-
-
CHECK BATTERY CURRENT SENSOR GROUND
-
-
Ignition switch OFF.
-
Check the continuity between battery current sensor harness connector and ground.
Battery current sensor
—
Continuity
Connector
Terminal
E39
2
Ground
Yes
-
Is the inspection result normal?
YES >>GO TO 5.
NO >>GO TO 4.
-
-
CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT
-
-
Disconnect IPDM E/R connector.
-
Check the continuity between battery current sensor harness connector and IPDM E/R harness connector.
Battery current sensor
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
E39
2
F98
96
Yes
-
Check the continuity between battery current sensor harness connector and ground.
Battery current sensor
—
Continuity
Connector
Terminal
E39
2
Ground
No
-
Is the inspection result normal?
YES >>Replace IPDM E/R. Refer to Removal and Installation.
NO >>Repair or replace harness.
-
-
CHECK BATTERY TEMPERATURE INPUT SIGNAL CIRCUIT 1
-
-
Disconnect IPDM E/R connector.
-
Check the continuity between battery current sensor harness connector and ground.
Battery current sensor
—
Continuity
Connector
Terminal
E39
3
Ground
No
-
Is the inspection result normal?
YES >>GO TO 6.
NO >>Repair or replace harness.
-
-
CHECK BATTERY CURRENT SENSOR
-
Refer to Component Inspection.
Is the inspection result normal?
YES>>Refer to Intermittent Incident. If the inspection result of the connector is normal then replace IPDM E/R. Refer to Removal and Installation.
NO>>Replace battery current sensor. Refer to Removal and Installation.
-
Component Inspection
Component Inspection
-
CHECK BATTERY TEMPERATURE SENSOR
-
-
Ignition switch OFF.
-
Disconnect battery current sensor connector.
-
Check the resistance between battery current sensor terminals.
Battery current sensor
Resistance
Terminals
2
3
Continuity exists and the resistance value is 100 Ω or more
Before measuring the terminal voltage, confirm that the battery is fully charged.
-
Is the inspection result normal?
YES >>Inspection End.
NO >>Replace battery current sensor.
-
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