EC-436
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1553 BATTERY CURRENT SENSOR
4. Install jumper cable between battery negative terminal and body
ground.
5. Turn ignition switch ON.
6. Check the voltage between ECM harness connector and
ground.
Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to PG-4, "How to Handle Battery".
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace battery negative cable assembly.
JPBIA3286ZZ
ECM
Vo l ta g e
(Approx.)
Connector +-
Te r m i n a l
F13
*1
F90*263 62 2.5 V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
P1554 BATTERY CURRENT SENSOREC-437
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
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G H
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NP
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P1554 BATTERY CURRENT SENSOR
DTC LogicINFOID:0000000009462368
DTC DETECTION LOGIC
NOTE:
If DTC P1554 is displayed with DTC P0643, first pe rform the trouble diagnosis for DTC P0643. Refer to
EC-407, "DTC Logic"
.
DTC CONFIRMATION PROCEDURE
1.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-437, "Component Function Check"
.
NOTE:
Use component function check to check the overall functi on of the battery current sensor circuit. During this
check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-438, "Diagnosis Procedure"
.
Component Function CheckINFOID:0000000009462369
1.PRECONDITIONING
TESTING CONDITION:
• Before performing the following procedure, confirm that battery voltage is more than 12.8 V at idle.
• Before performing the following procedure, confi rm that all load switches and A/C switch are turned
OFF.
>> GO TO 2.
2.PERFORM COMPONENT FUNCTION CHECK
With CONSULT
1. Start engine and let it idle.
2. Select “BAT CUR SEN” in “DATA MONI TOR” mode of “ENGINE” using CONSULT.
3. Check “BAT CUR SEN” indication for 10 seconds. “BAT CUR SEN” should be above 2,300 mV at least once.
Without CONSULT
1. Start engine and let it idle.
2. Check the voltage between ECM harness connector and ground.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P1554 BAT CURRENT SENSOR
(BAT CURRENT SENSOR) The output voltage of the battery current
sensor is lower than the specified value
while the battery voltage is high enough. • Harness or connectors
(Battery current sens or circuit is open
or shorted.)
• Battery current sensor
• Camshaft position sensor
• Camshaft (Intake)
•Starter motor
• Starting system circuit
• Dead (Weak) battery
ECM
Vo l ta g e
Connector +-
Te r m i n a l
F13
*1
F90*263 62 Above 2.3 V at least once
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
EC-438
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1554 BATTERY CURRENT SENSOR
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-438, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462370
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
Perform EC-525, "Diagnosis Procedure"
.
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.
*1: Except for California
*2: For California
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.
+
-Voltag e
(Approx.)
Battery current sensor
Connector Terminal F5 1 Ground 5 V
+ −
Continuity
Battery current sensor ECM
Connector Terminal Connector Terminal
F5 3 F13
*1
F90*262 Existed
+
−
Continuity
Battery current sensor ECM
Connector Terminal Connector Terminal
F5 4 F13
*1
F90*263 Existed
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
P1554 BATTERY CURRENT SENSOREC-439
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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*1: Except for California
*2: For California
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
Check the battery current sensor. Refer to EC-439, "Component Inspection"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace battery negative cable assembly.
Component InspectionINFOID:0000000009462371
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 and ground.
Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to PG-4, "How to Handle Battery".
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace battery negative cable assembly.
JPBIA3286ZZ
ECM
Vo l ta g e
(Approx.)
Connector +-
Te r m i n a l
F13
*1
F90*263 62 2.5 V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
EC-440
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1556, P1557 BATTERY
TEMPERATURE SENSOR
P1556, P1557 BATTERY TEMPERATURE SENSOR
DTC LogicINFOID:0000000009462372
DTC DETECTION LOGIC
NOTE:
If DTC P1556 or P1557 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-407, "DTC Logic"
.
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, confi rm 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 EC-440, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462373
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 SE NSOR 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
(Battery temperature sensor cir-
cuit) 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) ci rcuit is shorted.]
• Battery current sensor (Battery tem-
perature sensor)
P1557 BAT TMP SEN/CIRC
(Battery temperature sensor cir-
cuit) Signal voltage from Battery temperature
sensor remains 4.84V or more for 5 sec-
onds or more.
+
−Vol tag e
(Approx.)
Battery current sensor
Connector Terminal F5 2 Ground 5 V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
P1556, P1557 BATTERY TEMPERATURE SENSOR
EC-441
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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*1: Except for California
*2: For California
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.
*1: Except for California
*2: For California
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-441, "Component Inspection"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace battery negative cable assembly.
Component InspectionINFOID:0000000009462374
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
F5 2 F13
*1
F90*261 Existed
+
−
Continuity
Battery current sensor ECM
Connector Terminal Connector Terminal
F5 3 F13
*1
F90*262 Existed
Battery current sensor
Resistance
+ −
Te r m i n a l
2 3 Continuity with the resistance value 100 Ω or more
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
EC-446
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1572 ASCD BRAKE SWITCH
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
1. Drive the vehicle for at least 5 consecut ive seconds as per the following conditions.
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheel s lifted in the shop or by driving the vehicle.
If a road test is expected to be easier , it is unnecessary to lift the vehicle.
2. Check DTC.
Is DTC detected?
YES >> Proceed to EC-452, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462379
1.CHECK OVERALL FUNCTION-1
With CONSULT
1. Turn ignition switch ON.
2. Select “BRAKE SW1” in “DATA MONI TOR” mode of “ENGINE” using CONSULT.
3. Check “BRAKE SW1” indication as per the following conditions.
Without CONSULT
1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector terminals as per the following.
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK OVERALL FUNCTION-2
With CONSULT
Select “BRAKE SW2” and check indication as per the following conditions.
Vehicle speed More than 30 km/h (19 mph)
Selector lever Suitable position
Driving location Depress the brake pedal for more
than five seconds so as not to come
off from the above-mentioned vehi-
cle speed.
Monitor item Condition Indication
BRAKE SW1 Brake pedal Slightly depressed OFF
Fully released ON
ECM ConditionVo l ta g e
(Approx.)
Connector +–
Te r m i n a l
E10
*1
E31*2116 128 Brake pedal Slightly depressed 0 V
Fully released Battery voltage
Monitor item Condition Indication
BRAKE SW2 Brake pedal Slightly depressed ON
Fully released OFF
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
P1572 ASCD BRAKE SWITCHEC-447
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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Without CONSULT
Check the voltage between ECM harness connector te rminals as per the following conditions.
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> GO TO 6.
3.CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect brake pedal position switch harness connector.
3. Turn ignition switch ON.
4. Check the voltage between brake pedal position switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Perform the trouble diagnosis for power supply circuit.
4.CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between brake pedal posit ion switch harness connector and ECM harness connec-
tor.
*1: Except for California
*2: For California
4. 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 BRAKE PEDAL POSITION SWITCH
Check the brake pedal position switch. Refer to EC-449, "Component Inspection (Brake Pedal Position
Switch)"
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace brake pedal position switch. Refer to BR-18, "Exploded View"
.
ECM
ConditionVol tag e
(Approx.)
Connector +–
Te r m i n a l
E10
*1
E31*2115 128 Brake pedal Slightly depressed Battery voltage
Fully released 0 V
+ −Vo l ta g e
Brake pedal position switch
Connector Terminal E51 1 Ground Battery voltage
+ −
Continuity
Brake pedal position switch ECM
Connector Terminal Connector Terminal
E51 2 E10
*1
E31*211 6 E x i s t e d
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM