Nissan Teana J32. Manual - part 861

PCS-50

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2553 IGNITION RELAY

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK IGNITION RELAY FEEDBACK CIRCUIT

1.

Disconnect fuse block (J/B) connector.

2.

Check continuity between BCM harness connector and fuse block (J/B) harness connector.

3.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-35, "Intermittent Incident"

.

>> INSPECTION END

(+)

(–)

Condition

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M123

123

Ground

Ignition switch

OFF

0

ON

Battery voltage

BCM

FUSE BLOCK (J/B)

Continuity

Connector

Terminal

Connector

Terminal

M123

123

M1

2A

Existed

BCM

Ground

Continuity

Connector

Terminal

M123

123

Not existed

PCS

B260A IGNITION RELAY

PCS-51

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

B260A IGNITION RELAY

Description

INFOID:0000000003805737

When the ignition switch is turned ON, the BCM activates the following relays to provide power supply to each
ECU.
• Ignition relay (inserted into fuse block)
• Ignition relay (built into IPDM E/R)
• Blower fan motor relay
BCM checks any ignition relay ON request for consistency with the actual ignition relay operation status.

DTC Logic

INFOID:0000000003805738

DTC DETECTION LOGIC

NOTE:
• If DTC B260A is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

PCS-46, "BCM : DTC Logic"

.

• If DTC B260A is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

PCS-48, "BCM : DTC Logic"

.

• If DTC B260A is displayed with DTC B261A, first perform the trouble diagnosis for DTC B261A. Refer to

PCS-60, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON under the following conditions, and wait for at least 2 seconds.

-

Selector lever is in the P or N position.

-

Do not depress brake pedal.

2.

Check “Self diagnostic result” with CONSULT-III. 

Is DTC detected?

YES

>> Go to 

PCS-51, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003805739

1.

CHECK DTC WITH IPDM E/R

Check “Self diagnostic result” with CONSULT-III. Refer to 

PCS-120, "DTC Index"

.

Is DTC detected?

YES

>> Repair or replace the malfunctioning parts.

NO

>> GO TO 2.

2.

CHECK IGNITION RELAY INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B260A

IGNITION RELAY

BCM detects a difference of signal for 2 seconds or 
more between the following information.
• Ignition relay (IPDM E/R) operation request
• Ignition relay feedback from IPDM E/R (CAN).

• Harness or connectors

(Ignition relay operation circuit is 
open or shorted.)

• IPDM  E/R

(+)

(–)

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M121

47

Ground

Battery voltage

PCS-52

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B260A IGNITION RELAY

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK IGNITION RELAY (IPDM E/R) CIRCUIT

1.

Disconnect IPDM E/R connector.

2.

Check continuity between IPDM E/R harness connector and BCM harness connector.

3.

Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-35, "Intermittent Incident"

.

>> INSPECTION END

IPDM E/R

BCM

Continuity

Connector

Terminal

Connector

Terminal

E10

27

M121

47

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E10

27

Not existed

PCS

B2614 ACC RELAY

PCS-53

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

B2614 ACC RELAY

Description

INFOID:0000000003805740

BCM controls the various electrical components and simultaneously supplies power according to the power
supply position.
BCM checks the power supply position internally.

DTC Logic

INFOID:0000000003805741

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn the power supply position to ACC under the following conditions, and wait for at least 1 second.

-

Selector lever is in the P or N position.

-

Do not depress brake pedal.

2.

Check “Self diagnostic result” with CONSULT-III. 

Is DTC detected?

YES

>> Go to 

PCS-53, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003805742

1.

CHECK ACCESSORY RELAY POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect accessory relay.

3.

Check voltage between accessory relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK ACCESSORY RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between accessory relay harness connector and BCM harness connector.

4.

Check continuity between accessory relay harness connector and ground.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2614

ACC relay

An immediate operation of ACC relay is requested 
by BCM, but there is no response for more than 1 
second.

• Harness or connectors

(ACC relay circuit is open or short-
ed)

• ACC relay

(+)

(–)

Condition

Voltage (V)

(Approx.)

Accessory relay

Terminal

1

Ground

Ignition switch

OFF

0

ACC

Battery voltage

Accessory relay

BCM

Continuity

Terminal

Connector

Terminal

1

M122

95

Existed