Nissan Leaf. Manual - part 995

PCS

B26F6 BCM

PCS-63

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

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B26F6 BCM

DTC Logic

INFOID:0000000010120331

DTC DETECTION LOGIC

NOTE:

• If DTC B26F6 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-61, "DTC Logic"

.

• If DTC B26F6 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-62, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn power switch ON, and wait for 0.5 seconds or more.

2. Perform Self Diagnostic Result of BCM with CONSULT. 
Is DTC B26F6 detected?

YES

>> Go to 

PCS-63, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010120332

1.

INSPECTION START

1. Turn power switch ON.

2. Select Self-diagnosis result of BCM with CONSULT.

3. Touch ERASE.

4. Perform Self-diagnosis result of BCM with CONSULT.
Is DTC B26F6 detected?

YES

>> Replace BCM. Refer to 

BCS-72, "Removal and Installation"

.

NO

>> Inspection End.

CONSULT Display

DTC Detection Condition

Possible Cause

IGN USM CONT
[B26F6]

Power switch ON signal (CAN) (ON) is not trans-
mitted from IPDM E/R, when BCM turns ignition 
relay-1 ON [Transmit power switch ON signal 
(CAN) (ON)].

BCM

PCS-64

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

POWER SWITCH

POWER SWITCH

Component Function Check

INFOID:0000000010120333

1.

CHECK FUNCTION

1. Select PUSH SW in Data Monitor mode with CONSULT. 

2. Check power switch (push switch) signal under the following conditions.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Go to  

PCS-64, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010120334

Regarding Wiring Diagram information, refer to 

PCS-42, "Wiring Diagram"

.

1.

CHECK POWER SWITCH (PUSH SWITCH) OUTPUT SIGNAL 1

1. Turn power switch OFF.

2. Disconnect power switch connector and IPDM E/R connector E17.

3. Check voltage between power switch connector M33 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK POWER SWITCH (PUSH SWITCH) CIRCUIT 1

1. Disconnect BCM connector M23.

2. Check continuity between BCM connector M23 and power switch connector M33.

3. Check continuity between BCM connector M23 and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-72, "Removal and Installation"

.

NO

>> Repair or replace harness or connectors.

3.

CHECK POWER SWITCH (PUSH SWITCH) OUTPUT SIGNAL 2

Check voltage between IPDM E/R connector E17 and ground.

Test item

Condition

Status

PUSH SW

Power switch pressed

ON

Power switch released

OFF

Power switch

Ground

Voltage

(Approx.)

Connector

Terminal

M33

8

—

Battery voltage

BCM

Power switch

Continuity

Connector

Terminal

Connector

Terminal

M23

76

M33

8

Yes

BCM

Ground

Continuity

Connector

Terminal

M23

76

—

No

PCS

POWER SWITCH

PCS-65

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

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Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK POWER SWITCH (PUSH SWITCH) CIRCUIT 2

1. Disconnect BCM connector M23.

2. Check continuity between IPDM E/R connector E17 and power switch connector M33.

3. Check continuity between IPDM E/R connector E17 and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-29, "Removal and Installation"

.

NO

>> Repair or replace harness or connectors.

5.

CHECK POWER SWITCH (PUSH SWITCH) GROUND CIRCUIT 

Check continuity between power switch connector M33 and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness.

6.

CHECK POWER SWITCH (PUSH SWITCH)

Perform the power switch component inspection. Refer to 

PCS-65, "Component Inspection"

.

Is the inspection result normal?

YES

>> Refer to 

GI-53, "Intermittent Incident"

.

NO

>> Replace power switch. Refer to 

PCS-71, "Removal and Installation"

.

Component Inspection

INFOID:0000000010120335

1.

CHECK POWER SWITCH (PUSH SWITCH)

1. Turn power switch OFF.

2. Disconnect power switch connector M33.

3. Check continuity between power switch terminals.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace power switch. Refer to 

PCS-71, "Removal and Installation"

.

IPDM E/R

Ground

Voltage

(Approx.)

Connector

Terminal

E17

66

—

Battery voltage

IPDM E/R

Power switch

Continuity

Connector

Terminal

Connector

Terminal

E17

66

M33

8

Yes

IPDM E/R

Ground

Continuity

Connector

Terminal

E17

66

—

No

Power switch

Ground

Continuity

Connector

Terminal

M33

4

—

Yes

Power switch terminals

Condition

Continuity

8

4

Pressed

Yes

Released

No

PCS-66

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

POWER SWITCH POSITION INDICATOR

POWER SWITCH POSITION INDICATOR

Description

INFOID:0000000010120336

Power switch position indicator is controlled by BCM, and illuminates when power switch is in ACC or ON

position.

Component Function Check

INFOID:0000000010120337

1.

CHECK FUNCTION

1. Use CONSULT to perform PUSH SWITCH INDICATOR Active Test.

2. Touch On and verify that push switch indicator illuminates.
Is the inspection result normal?

YES

>> Inspection End.

NO

>> Refer to 

PCS-66, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010120338

Regarding Wiring Diagram information, refer to 

PCS-42, "Wiring Diagram"

.

1.

CHECK POWER SWITCH CIRCUIT - 1

1. Turn power switch OFF.

2. Disconnect power switch connector.

3. Check voltage between power switch connector M33 and ground.

Is the inspection normal?

YES

>> GO TO 2.

NO-1 >> Check 10 A fuse [No.7, located in fuse block (J/B)].

NO-2 >> Check harness for open or short between power switch and fuse.

2.

CHECK POWER SWITCH CIRCUIT - 2

1. Disconnect BCM connector M23.

2. Check continuity between BCM connector M23 and power switch connector M33.

3. Check continuity between BCM connector M23 and ground.

Is the inspection normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK POWER SWITCH INTERNAL CIRCUIT

1. Connect power switch connector.

2. Check voltage between power switch connector M33 and ground.

Power switch

Ground

Voltage

(Approx.)

Connector

Terminal

M33

3

—

Battery voltage

BCM

Power switch

Continuity

Connector

Terminal

Connector

Terminal

M23

91

M33

7

Yes

BCM

Ground

Continuity

Connector

Terminal

M23

91

—

No