Nissan Sentra. Instruction — part 422
EC-384
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
P1554 BATTERY CURRENT SENSOR
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Diagnosis Procedure
INFOID:0000000009758638
1.
CHECK BATTERY CURRENT SENSOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect battery current sensor harness connector.
3. Turn ignition switch ON.
4. Check the voltage between battery current sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK SENSOR POWER SUPPLY 2 CIRCUIT
Check sensor power supply 2 circuit. Refer to
.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace error-detected parts.
3.
CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between battery current sensor harness connector and ECM harness connector.
4. Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT
1. Check the continuity between battery current sensor harness connector and ECM harness connector.
2. Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts
5.
CHECK BATTERY CURRENT SENSOR
+
−
Voltage
(Approx.)
Battery current sensor
Connector
Terminal
F54
1
Ground
5.0 V
+
−
Continuity
Battery current sensor
ECM
Connector
Terminal
Connector
Terminal
F54
3
F25
62
Existed
+
−
Continuity
Battery current sensor
ECM
Connector
Terminal
Connector
Terminal
F54
4
F25
63
Existed
P1554 BATTERY CURRENT SENSOR
EC-385
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Check the battery current sensor. Refer to
EC-385, "Component Inspection (Battery Current Sensor)"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
>> Replace battery current sensor. Refer to
PG-53, "Removal and Installation"
Component Inspection (Battery Current Sensor)
INFOID:0000000009758639
1.
CHECK BATTERY CURRENT SENSOR
1. Turn ignition switch OFF.
2. Reconnect harness connectors disconnected.
3. Disconnect battery negative cable.
4. Install jumper cable between battery negative terminal and body
ground.
5. Turn ignition switch ON.
6. Check the voltage between ECM harness connector terminals.
Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace battery current sensor. Refer to
PG-53, "Removal and Installation"
JPBIA3286ZZ
ECM
Voltage
(Approx.)
Connector
+
-
Terminal
F25
63
62
2.5 V
EC-386
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
P1556, P1557 BATTERY TEMPERATURE SENSOR
P1556, P1557 BATTERY TEMPERATURE SENSOR
DTC Logic
INFOID:0000000009758640
DTC DETECTION LOGIC
NOTE:
If DTC P1556 or P1557 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 10 V or more at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine and let it idle at least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009758641
1.
CHECK BATTERY TEMPERATURE SENSOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect battery current sensor harness connector.
3. Turn ignition switch ON.
4. Check the voltage between battery current sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK BATTERY TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between battery current sensor harness connector and ECM harness connector.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1556
BAT TMP SEN/CIRC
(BAT TMP SEN/CIRC)
Signal voltage from Battery temperature
sensor remains 0.16V or less for 5 sec-
onds or more.
• Harness or connectors
[Battery current sensor (Battery tem-
perature sensor) circuit is shorted.]
• Battery current sensor (Battery tem-
perature sensor)
P1557
BAT TMP SEN/CIRC
(BAT TMP SEN/CIRC)
Signal voltage from Battery temperature
sensor remains 4.84V or more for 5 sec-
onds or more.
+
−
Voltage
(Approx.)
Battery current sensor
Connector
Terminal
F54
2
Ground
5 V
P1556, P1557 BATTERY TEMPERATURE SENSOR
EC-387
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
4. Also check harness for short to ground.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace error-detected parts.
3.
CHECK BATTERY TEMPERATURE SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between battery current sensor harness connector and ECM harness connector.
4. Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK BATTERY TEMPERATURE SENSOR
Check the battery temperature sensor. Refer to
EC-387, "Component Inspection"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
>> Replace battery negative cable assembly.
Component Inspection
INFOID:0000000009758642
1.
CHECK BATTERY TEMPERATURE SENSOR
1. Turn ignition switch OFF.
2. Disconnect battery current sensor.
3. Check the resistance between battery current sensor connector terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace battery negative cable assembly.
+
−
Continuity
Battery current sensor
ECM
Connector
Terminal
Connector
Terminal
F54
2
F25
61
Existed
+
−
Continuity
Battery current sensor
ECM
Connector
Terminal
Connector
Terminal
F54
3
F25
62
Existed
Battery current sensor
Resistance
+
−
Terminal
2
3
Continuity with the resistance value 100
Ω or more
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