Nissan Sentra. Manual - part 682

PCS

U1010 CONTROL UNIT (CAN)

PCS-81

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000009755866

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000009755867

1.

REPLACE BCM

When DTC “U1010” is detected, replace BCM.

>> Replace BCM. Refer to 

BCS-73, "Removal and Installation"

.

CONSULT Display

DTC Detection Condition

Possible Cause

CONTROL UNIT (CAN)
[U1010]

BCM detected internal CAN communication cir-
cuit malfunction.

BCM

PCS-82

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2614 ACC RELAY CIRCUIT

B2614 ACC RELAY CIRCUIT

DTC Logic

INFOID:0000000009755868

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-82, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009755869

Regarding Wiring Diagram information, refer to 

PCS-70, "Wiring Diagram"

.

1.

CHECK ACCESSORY RELAY-2 CONTROL SIGNAL

Check voltage between BCM connector M83 and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-73, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK ACCESSORY RELAY-2 CONTROL SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connector M83 and accessory relay-2.

3. Check continuity between BCM connector M83 and accessory relay-2 connector M65.

4. Check continuity between BCM connector M83 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-2
• BCM

(+)

(–)

Condition

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M83

75

Ground

Ignition switch

OFF

0

ACC or ON

Battery voltage

BCM

Accessory relay-2

Continuity

Connector

Terminal

Connector

Terminal

M83

75

M65

2

Yes

BCM

Ground

Continuity

Connector

Terminal

M83

75

No

PCS

B2614 ACC RELAY CIRCUIT

PCS-83

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

3.

CHECK ACCESSORY RELAY-2

Refer to 

PCS-83, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-73, "Removal and Installation"

.

NO

>> Replace accessory relay-2.

Component Inspection

INFOID:0000000009755870

1.

CHECK ACCESSORY RELAY-2

1. Turn ignition switch OFF.

2. Remove accessory relay-2.

3. Check the continuity between accessory relay-2 terminals.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace accessory relay-2.

Terminals

Condition

Continuity

3 and 5

12 V direct current supply between terminals 1 and 2

Yes

No current supply

No

PBIB0098E

PCS-84

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2615 BLOWER RELAY CIRCUIT

B2615 BLOWER RELAY CIRCUIT

DTC Logic

INFOID:0000000009755871

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-84, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009755872

Regarding Wiring Diagram information, refer to 

PCS-70, "Wiring Diagram"

.

1.

 CHECK BLOWER RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect blower relay.

3. Disconnect BCM connector M83.

4. Check continuity between blower relay connector J-1 and BCM connector M83.

5. Check continuity between blower relay connector J-1 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

 CHECK BLOWER RELAY GROUND CIRCUIT

1. Check continuity between blower relay connector J-1 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

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 relay

BCM

Continuity

Connector

Terminal

Connector

Terminal

J-1

2

M83

65

Yes

Blower relay

Ground

Continuity

Connector

Terminal

J-1

2

—

No

Blower relay

Ground

Continuity

Connector

Terminal

J-1

1

—

Yes