Nissan Versa Sedan. Instruction - part 623

PCS-78

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000009266467

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000009266468

1.

REPLACE BCM

When DTC “U1010” is detected, replace BCM.

>> Replace BCM. Refer to 

BCS-69, "Removal and Installation"

.

CONSULT Display

DTC Detection Condition

Possible Cause

CONTROL UNIT (CAN)
[U1010]

BCM detected internal CAN communication cir-
cuit malfunction.

BCM

PCS

B2614 ACC RELAY CIRCUIT

PCS-79

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

B2614 ACC RELAY CIRCUIT

DTC Logic

INFOID:0000000009266469

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch to ACC, and wait for 1 second or more.

2. Check “Self-diagnosis result” of BCM with CONSULT. 
Is DTC detected?

YES

>> Go to 

PCS-79, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009266470

Regarding Wiring Diagram information, refer to 

PCS-68, "Wiring Diagram"

.

1.

CHECK ACCESSORY RELAY CONTROL SIGNAL

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-69, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK ACCESSORY RELAY CONTROL SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connector and accessory relay.

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

4. Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

CONSULT Display

DTC detecting condition

Possible cause

ACC RELAY CIRCUIT
[B2614]

An immediate operation of accessory relay is request-
ed by BCM, but there is no response for more than 1 
second.

• Harness or connectors
• Accessory relay
• BCM

(+)

(–)

Condition

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M98

96

Ground

Ignition switch

OFF

0

ACC or ON

Battery voltage

BCM

Accessory relay

Continuity

Connector

Terminal

Terminal

M98

96

Coil upstream side

Yes

BCM

Ground

Continuity

Connector

Terminal

M98

96

No

PCS-80

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2614 ACC RELAY CIRCUIT

3.

CHECK ACCESSORY RELAY

Refer to 

PCS-80, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-69, "Removal and Installation"

.

NO

>> Replace accessory relay.

Component Inspection

INFOID:0000000009266471

1.

CHECK ACCESSORY RELAY

1. Turn ignition switch OFF.

2. Remove accessory relay.

3. Check the continuity between accessory relay terminals.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace accessory relay

Terminals

Condition

Continuity

3 and 5

12 V direct current supply between terminals 1 and 2

Yes

No current supply

No

PBIB0098E

PCS

B2615 BLOWER RELAY CIRCUIT

PCS-81

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

B2615 BLOWER RELAY CIRCUIT

DTC Logic

INFOID:0000000009266472

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON, and wait for 1 second or more.

2. Check “Self-diagnosis result” with CONSULT. 
Is DTC detected?

YES

>> Go to 

PCS-81, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009266473

Regarding Wiring Diagram information, refer to 

PCS-68, "Wiring Diagram"

.

1.

 CHECK BLOWER MOTOR RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect blower motor relay.

3. Disconnect BCM connector M19.

4. Check continuity between blower motor relay connector J-1 terminal 2 and BCM connector M98 terminal

106.

5. Check continuity between Blower motor relay connector J-1 terminal 2 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

 CHECK BLOWER MOTOR RELAY GROUND CIRCUIT

1. Check continuity between Blower motor relay connector J-1 terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

CONSULT Display

DTC Detection Condition

Possible Cause

BLOWER RELAY CIRCUIT
[B2615]

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

• Harness or connectors.
• Front blower motor relay.
• Fuse block J/B.
• BCM.

Blower motor relay

BCM

Continuity

Connector

Terminal

Connector

Terminal

J-1

2

M98

106

Yes

Blower motor relay

Ground

Continuity

Connector

Terminal

J-1

2

—

No

Front blower motor relay

Ground

Continuity

Connector

Terminal

J-1

1

—

Yes