Nissan Leaf. Manual - 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 >

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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

EVC-351, "DTC Logic"

.

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-

cedure"

.

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