Nissan X-Trail 32. Manual - part 275

CHG-16

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

B20BD BATTERY CURRENT SENSOR

DTC/CIRCUIT DIAGNOSIS

B20BD BATTERY CURRENT SENSOR

DTC Description

INFOID:0000000010957606

DTC DETECTION LOGIC

POSSIBLE CAUSE

[CIRC SHORT TO GRND]

• Harness or connectors
- Battery current sensor input signal (Current) circuit is shorted (Ground)
- Battery current sensor power circuit is open
• Battery current sensor

[CIRC SHORT TO BATTERY]

• Harness or connectors
- Battery current sensor input signal (Current) circuit is shorted (Power)
• Battery current sensor

[CIRC OPEN] or [CMPNENT INTERNAL MLFNCTN]

• Battery terminal is not connected
• Harness or connectors
- Battery current sensor input circuit is open
• Battery current sensor

FAIL-SAFE

Stop/start system is inhibited when this DTC is detected.

DTC CONFIRMATION PROCEDURE

1.

PERFORM COMPONENT FUNCTION CHECK

1.

Start engine and wait for 10 seconds or more.

2.

Perform “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT.

Is the inspection result normal?

YES-1 >> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

YES-2 >> Confirmation after repair: INSPECTION END
NO

>> Proceed to 

CHG-16, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000010957607

1.

CHECK DTC

Perform each inspection according to the displayed DTC.

Which DTC is displayed?

[CIRC SHORT TO GRND]>>GO TO 2.
[CIRC SHORT TO BATTERY]>>GO TO 7.
[CIRC OPEN] or [CMPNENT INTERNAL MLFNCTN]>>GO TO 8.

2.

CHECK BATTERY CURRENT SENSOR POWER

DTC 

No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

B20BD

CURRENT SENSOR
(Current sensor)

[CIRC SHORT TO GRND]

An excessively low voltage from the sensor is sent to IPDM 
E/R.

[CIRC SHORT TO BATTERY]

An excessively high voltage from the sensor is sent to IPDM 
E/R.

[CIRC OPEN]

The output voltage of the battery current sensor is lower 
than the specified value while the battery voltage is high 
enough or the changing of voltage is lower than the speci-
fied value. 

[CMPNENT INTERNAL 
MLFNCTN]

CHG

B20BD BATTERY CURRENT SENSOR

CHG-17

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

1.

Turn ignition switch OFF.

2.

Disconnect battery current sensor 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 4.

NO

>> GO TO 3.

3.

CHECK BATTERY CURRENT SENSOR POWER CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector.

3.

Check the continuity between battery current sensor harness connector and IPDM E/R harness connec-
tor.

4.

Check the continuity between battery current sensor harness connector and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-60, "Removal and Installation"

.

NO

>> Repair or replace harness.

4.

CHECK BATTERY CURRENT SENSOR GROUND

1.

Turn ignition switch OFF.

2.

Check the continuity between battery current sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT

1.

Disconnect IPDM E/R connector.

2.

Check the continuity between battery current sensor harness connector and IPDM E/R harness connec-
tor.

3.

Check the continuity between battery current sensor harness connector and ground.

(+)

(-)

Voltage (V)

Battery current sensor

Connector

Terminal

F43

4

Ground

Approx. 5

Battery current sensor

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

F43

4

F74

95

Existed

Battery current sensor

—

Continuity

Connector

Terminal

F43

4

Ground

Not existed

Battery current sensor

—

Continuity

Connector

Terminal

F43

2

Ground

Existed

Battery current sensor

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

F43

2

F74

96

Existed

CHG-18

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

B20BD BATTERY CURRENT SENSOR

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-60, "Removal and Installation"

.

NO

>> Repair or replace harness.

6.

CHECK BATTERY CURRENT INPUT SIGNAL CIRCUIT 1

1.

Disconnect IPDM E/R connector.

2.

Check the continuity between battery current sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace harness.

7.

CHECK BATTERY CURRENT INPUT SIGNAL CIRCUIT 2

1.

Turn ignition switch OFF.

2.

Disconnect battery current sensor connector.

3.

Check the voltage between battery current sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace harness.

8.

CHECK BATTERY NEGATIVE TERMINAL CONNECTION

Check if battery negative terminal is clean and tight.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair battery negative terminal connection.

9.

CHECK BATTERY CURRENT INPUT SIGNAL CIRCUIT 3

1.

Turn ignition switch OFF.

2.

Disconnect battery current sensor connector and IPDM E/R connector.

3.

Check the continuity between battery current sensor harness connector and IPDM E/R harness connec-
tor.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace harness.

10.

CHECK BATTERY CURRENT SENSOR

Refer to 

CHG-19, "Component Inspection"

.

Battery current sensor

—

Continuity

Connector

Terminal

F43

2

Ground

Not existed

Battery current sensor

—

Continuity

Connector

Terminal

F43

1

Ground

Not existed

(+)

(-)

Voltage (V)

Battery current sensor

Connector

Terminal

F43

1

Ground

0

Battery current sensor

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

F43

1

F74

97

Existed

CHG

B20BD BATTERY CURRENT SENSOR

CHG-19

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Is the inspection result normal?

YES

>> Refer to 

GI-44, "Intermittent Incident"

. If the inspection result of the connector is normal then

replace IPDM E/R. Refer to 

PCS-60, "Removal and Installation"

.

NO

>> Replace battery current sensor.

Component Inspection

INFOID:0000000010957608

1.

CHECK BATTERY CURRENT SENSOR

1.

Turn ignition switch OFF.

2.

Reconnect connector which is 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 IPDM E/R harness connector termi-
nals as per the following.

Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to 

PG-120, "R9M :

Work Flow"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace battery current sensor.

IPDM E/R

Voltage (V)

Connector

+

–

Terminal

Terminal

F74

97

(Battery current sensor signal)

96

Approx. 2.5

JPBIA3287ZZ