Nissan Leaf. Instruction — part 541
EVC-188
< DTC/CIRCUIT DIAGNOSIS >
P1550, P1551, P1552 BATTERY CURRENT SENSOR
Component Inspection
INFOID:0000000010120638
1.
CHECK BATTERY CURRENT SENSOR
1. Turn power 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 power switch ON.
6. Check the voltage between VCM harness connector terminals.
Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to
PG-83, "How to Handle 12V Battery"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace battery current sensor. Refer to
PG-93, "Removal and Installation"
.
VCM
Voltage
(Approx.)
Connector
+
-
Terminal
E62
95
(Battery current sensor signal)
120
2.5 V
JPBIA3286ZZ
P1554 BATTERY CURRENT SENSOR
EVC-189
< DTC/CIRCUIT DIAGNOSIS >
D
E
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G
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EVC
N
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P1554 BATTERY CURRENT SENSOR
DTC Logic
INFOID:0000000010120639
DTC DETECTION LOGIC
NOTE:
If DTC P1554 is displayed with DTC P31E5, first perform the trouble diagnosis for DTC P31E5. Refer to
DTC CONFIRMATION PROCEDURE
1.
PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to
EVC-189, "Component Function Check"
NOTE:
Use component function check to check the overall function of the battery current sensor circuit. During this
check, a DTC might not be confirmed.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
EVC-189, "Diagnosis Procedure"
Component Function Check
INFOID:0000000010120640
1.
PRECONDITIONING
TESTING CONDITION:
• Before performing the following procedure, confirm that battery voltage is more than 12.8 V while
power switch ON.
• Before performing the following procedure, confirm that all load switches and A/C switch are turned
OFF.
>> GO TO 2.
2.
PERFORM COMPONENT FUNCTION CHECK
1. Turn power switch ON.
2. Check the voltage between VCM harness connector terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
EVC-189, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000010120641
1.
CHECK BATTERY CURRENT SENSOR POWER SUPPLY-1
1. Turn power switch OFF.
2. Disconnect battery current sensor harness connector.
3. Turn power switch ON.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1554
BATTERY CURRENT SEN-
SOR
(Battery 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 sensor circuit is open
or shorted.)
• Battery current sensor
VCM
Voltage
Connector
+
-
Terminal
Terminal
E62
95
(Battery current sensor signal)
120
Above 2.37 V at
least once
EVC-190
< DTC/CIRCUIT DIAGNOSIS >
P1554 BATTERY CURRENT SENSOR
4. Check the voltage between battery current sensor harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 2.
2.
CHECK BATTERY CURRENT SENSOR POWER SUPPLY-2
Check the voltage between battery current sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 5.
3.
CHECK VCM GROUND CIRCUIT
1. Turn power switch OFF.
2. Disconnect VCM harness connector.
3. Check the continuity between VCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT
1. Check the continuity between battery current sensor harness connector and VCM harness connector.
2. Also check harness for short to power.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-53, "Intermittent Incident"
.
NO
>> Repair or replace error-detected parts.
5.
CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT
1. Turn power switch OFF.
Battery current sensor
Voltage
(Approx.)
Connector
+
−
Terminal
E125
4
2
5 V
+
−
Voltage
(Approx.)
Battery current sensor
Connector
Terminal
E125
4
Ground
5 V
+
−
Continuity
VCM
Connector
Terminal
E61
58
Ground
Existed
65
E62
118
126
+
−
Continuity
Battery current sensor
VCM
Connector
Terminal
Connector
Terminal
E125
2
E62
120
Existed
P1554 BATTERY CURRENT SENSOR
EVC-191
< DTC/CIRCUIT DIAGNOSIS >
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2. Disconnect VCM harness connector.
3. Check the continuity between VCM harness connector and battery current sensor harness connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace error-detected parts.
6.
CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit. Refer to
EVC-138, "VCM : Diagnosis Pro-
NO
>> Repair or replace error-detected parts.
7.
CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT
1. Turn power switch OFF.
2. Disconnect VCM harness connector.
3. Check the continuity between battery current sensor harness connector and VCM harness connector.
4. Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace error-detected parts
8.
CHECK BATTERY CURRENT SENSOR
Check the battery current sensor. Refer to
EVC-191, "Component Inspection"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-53, "Intermittent Incident"
.
NO
>> Replace battery current sensor. Refer to
PG-93, "Removal and Installation"
Component Inspection
INFOID:0000000010120642
1.
CHECK BATTERY CURRENT SENSOR
1. Turn power switch OFF.
2. Reconnect harness connectors disconnected.
3. Disconnect battery negative cable.
−
+
Continuity
Battery current sensor
VCM
Connector
Terminal
Connector
Terminal
E125
4
E62
96
Existed
VCM
Sensor
Connector
Terminal
Name
Connector
Terminal
E61
36
Accelerator pedal position sensor 1
E101
3
E62
97
Accelerator pedal position sensor 2
E101
2
98
Refrigerant pressure sensor
E49
3
+
−
Continuity
Battery current sensor
VCM
Connector
Terminal
Connector
Terminal
E125
1
E62
95
Existed
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