Nissan Note E12. Manual - part 481

PCS

U1000 CAN COMM CIRCUIT

PCS-51

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

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DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000009567594

Refer to 

LAN-6, "CAN COMMUNICATION SYSTEM : System Description"

.

DTC Logic

INFOID:0000000009567595

DTC DETECTION LOGIC

NOTE:

U1000 can be set if a module harness was disconnected and reconnected, perhaps during a repair. Confirm

that there are actual CAN diagnostic symptoms and a present DTC by performing the Self Diagnostic Result

procedure.

Diagnosis Procedure

INFOID:0000000009567596

1.

 PERFORM SELF DIAGNOSTIC RESULT

1. Turn ignition switch ON and wait for 2 second or more.

2. Check “SELF- DIAG RESULTS”.
Is “CAN COMM CIRCUIT” displayed?

YES

>> Perform CAN Diagnosis as described in DIAGNOSIS section of CONSULT Operation Manual.

NO

>> Refer to 

GI-41, "Intermittent Incident"

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CONSULT Display

DTC Detection Condition

Possible Cause

CAN COMM CIRCUIT
[U1000]

When any listed module cannot communicate 
with CAN communication signal continuously for 
2 seconds or more with ignition switch ON

In CAN communication system, any item (or 
items) of the following listed below is malfunc-
tioning.
• Transmission
• Receiving (ECM)
• Receiving (VDC/TCS/ABS)
• Receiving (METER/M&A)
• Receiving (TCM)
• Receiving (IPDM E/R)

PCS-52

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000009567597

DTC DETECTION LOGIC

Diagnosis Procedure

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1.

REPLACE BCM

When DTC “U1010” is detected, replace BCM.

>> Replace BCM. Refer to 

BCS-67, "Removal and Installation"

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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-53

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

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B2614 ACC RELAY CIRCUIT

DTC Logic

INFOID:0000000009567599

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. Perform Self-diagnosis result of BCM with CONSULT. 
Is DTC B2614 displayed?

YES

>> Go to 

PCS-53, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009567600

Regarding Wiring Diagram information, refer to 

PCS-41, "Wiring Diagram"

.

1.

CHECK ACCESSORY RELAY-2 CONTROL SIGNAL

1. Turn ignition switch ON.

2. Check voltage between BCM connector M98 and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-67, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK ACCESSORY RELAY-2 CONTROL SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connector M98 and accessory relay-2 connector.

3. Check continuity between BCM connector M98 and accessory relay-2 connector M39.

4. Check continuity between BCM connector M98 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK ACCESSORY RELAY-2

CONSULT Display

DTC Detection Condition

Possible Cause

ACC RELAY REQ F/B
[B2614]

An immediate operation of accessory relay-2 is 
requested by BCM, but there is no response for 
more than 1 second.

• Harness or connectors
• Accessory relay-2
• BCM

BCM

Ground

Voltage

(Approx.)

Connector

Terminal

M98

96

—

Battery voltage

BCM

Accessory relay-2

Continuity

Connector

Terminal

Connector

Terminal

M98

96

M39

1

Yes

BCM

Ground

Continuity

Connector

Terminal

M98

96

No

PCS-54

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2614 ACC RELAY CIRCUIT

Refer to 

PCS-54, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-67, "Removal and Installation"

.

NO

>> Replace accessory relay-2.

Component Inspection

INFOID:0000000009567601

1.

CHECK ACCESSORY RELAY-2

1. Turn ignition switch OFF.

2. Disconnect 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