Nissan Leaf. Manual - part 994

PCS

B261A POWER SWITCH

PCS-59

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

B261A POWER SWITCH

DTC Logic

INFOID:0000000010120325

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Press power switch under the following conditions, and wait for 1 second or more.

-

Shift position is in the P position

-

Do not depress brake pedal

2. Perform Self Diagnostic Result of BCM with CONSULT. 
Is DTC B261A detected?

YES

>> Go to 

PCS-59, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010120326

Regarding Wiring Diagram information, refer to 

PCS-42, "Wiring Diagram"

.

1.

CHECK POWER SWITCH (PUSH SWITCH) OUTPUT SIGNAL

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

2. 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 CIRCUIT (BCM)

1. Disconnect BCM connector M23.

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

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

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-72, "Removal and Installation"

.

NO

>> Repair or replace harness or connectors.

CONSULT Display

DTC Detection Condition

Possible Cause

ENGINE SW
[B261A]

The following status is compared, and does not 
agree for 1 second or more.
• Power switch signal
• Power switch status signal (CAN)

• Harness or connectors

(Power switch circuit)

• BCM
• IPDM E/R

Power switch

Ground

Voltage

(Approx.)

Connector

Terminal

M33

8

—

Battery voltage

BCM

Power switch

Continuity

Connector

Terminal

Connector

Terminal

M23

76

M33

8

Yes

Power switch

Ground

Continuity

Connector

Terminal

M33

8

—

No

PCS-60

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B261A POWER SWITCH

3.

CHECK POWER SWITCH (PUSH SWITCH) OUTPUT SIGNAL (IPDM E/R)

Check voltage 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

>> GO TO 4.

4.

CHECK POWER SWITCH (PUSH SWITCH) CIRCUIT (IPDM E/R)

1. Disconnect BCM connector M23.

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

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

Is the inspection result normal?

YES

>> Refer to 

GI-53, "Intermittent Incident"

.

NO

>> Repair or replace harness or connectors.

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

Power switch

Ground

Continuity

Connector

Terminal

M33

8

—

No

PCS

B26F1 IGNITION RELAY

PCS-61

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

B26F1 IGNITION RELAY

DTC Logic

INFOID:0000000010120327

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn power switch ON, and wait for 2 seconds or more.

2. Perform Self Diagnostic Result of BCM with CONSULT. 
Is DTC B26F1 detected?

YES

>> Go to 

PCS-61, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010120328

Regarding Wiring Diagram information, refer to 

PCS-42, "Wiring Diagram"

.

1.

CHECK IGNITION RELAY-1 (IPDM E/R) CONTROL SIGNAL

Check voltage between BCM connector M23 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace BCM. Refer to 

BCS-72, "Removal and Installation"

.

2.

CHECK IGNITION RELAY-1 (IPDM E/R) CONTROL SIGNAL CIRCUIT

1. Turn power switch OFF.

2. Disconnect BCM connector M23 and IPDM E/R connector E17.

3. Check continuity between BCM connector M23 and IPDM E/R connector E17.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-29, "Removal and Installation"

.

NO

>> Repair or replace harness or connectors.

CONSULT Display

DTC Detection Condition

Possible Cause

IGN RELAY OFF STUCK
[B26F1]

BCM transmits ignition relay-1 control signal 
(ON: 0 V) or power switch ON signal (ON) (CAN), 
but does not receives power switch ON signal 
(ON) (CAN) from IPDM E/R.

• Harness or connectors

(ignition relay-1 circuit is open)

• BCM
• IPDM E/R

BCM

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

M23

98

—

Power switch ON

0 - 0.5

BCM

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

M23

98

E17

68

Yes

PCS-62

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B26F2 IGNITION RELAY

B26F2 IGNITION RELAY

DTC Logic

INFOID:0000000010120329

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn power switch ON, and wait for 2 seconds or more.

2. Perform Self Diagnostic Result of BCM with CONSULT. 
Is DTC B26F2 detected?

YES

>> Go to 

PCS-62, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010120330

Regarding Wiring Diagram information, refer to 

PCS-42, "Wiring Diagram"

.

1.

CHECK IGNITION RELAY-1 (IPDM E/R) CONTROL SIGNAL

1. Turn power switch OFF.

2. Check voltage 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

>> GO TO 3.

2.

CHECK IGNITION RELAY-1 (IPDM E/R) CONTROL SIGNAL CIRCUIT

1. Turn power switch OFF.

2. Disconnect BCM connector M23 and IPDM E/R connector E17.

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

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-72, "Removal and Installation"

.

NO

>> Repair or replace harness or connectors.

CONSULT Display

DTC Detection Condition

Possible Cause

IGN RELAY ON STUCK
[B26F2]

BCM transmits ignition relay-1 control signal 
(OFF: 12 V) or power switch ON signal (OFF) 
(CAN), but does not receives power switch ON 
signal (OFF) (CAN) from IPDM E/R.

• Harness or connectors

(ignition relay-1 circuit is short)

• BCM
• IPDM E/R

IPDM E/R

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

E17

68

—

Power switch OFF or ACC

Battery voltage

IPDM E/R

Ground

Continuity

Connector

Terminal

E17

68

—

No