Nissan Murano Z51. Manual - part 1078

PCS-54

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2614 ACC RELAY

Component Inspection

INFOID:0000000005516979

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. Refer to 

PG-113, "Fuse, Con-

nector and Terminal Arrangement"

.

Terminals

Condition

Continuity

3 and 5

12 V direct current supply between terminals 1 and 2

Existed

No current supply

Not existed

PBIB0098E

PCS

B2615 BLOWER RELAY CIRCUIT

PCS-55

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

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B2615 BLOWER RELAY CIRCUIT

Description

INFOID:0000000005516980

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:0000000005516981

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON 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-55, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005516982

1.

CHECK BLOWER RELAY POWER SUPPLY-1

1.

Turn ignition switch OFF.

2.

Disconnect blower relay.

3.

Check voltage between blower relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK BLOWER RELAY POWER SUPPLY-2

1.

Disconnect fuse block (J/B) connector.

2.

Check voltage between fuse block (J/B) harness connector and ground.

Is the inspection result normal?

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2615

Blower relay circuit

BCM detects a difference of signal for 1 second or 
more between the following information.
• Blower relay ON/OFF request 
• Blower relay feedback

• Harness or connectors 

(Blower relay circuit is open or 
shorted)

• Blower relay

(+)

(–)

Condition

Voltage (V)

(Approx.)

Blower relay

Terminal

1

Ground

Ignition switch

OFF or ACC

0

ON

Battery voltage

(+)

(–)

Condition

Voltage (V)

(Approx.)

Fuse block (J/B)

Connector

Terminal

E103

6F

Ground

Ignition switch

OFF or ACC

0

ON

Battery voltage

PCS-56

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2615 BLOWER RELAY CIRCUIT

YES

>> Replace fuse block (J/B).

NO

>> GO TO 3.

3.

CHECK BLOWER RELAY POWER SUPPLY CIRCUIT-1

1.

Disconnect BCM connector.

2.

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

3.

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

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-95, "Removal and Installation"

.

NO

>> Repair or replace harness.

4.

CHECK BLOWER RELAY GROUND CIRCUIT

Check continuity between blower relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair blower relay ground circuit.

5.

CHECK BLOWER RELAY POWER SUPPLY CIRCUIT-2

1.

Connect blower relay.

2.

Turn ignition switch ON.

3.

Check voltage between blower relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

CHECK BLOWER RELAY

Refer to 

PCS-57, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace fuse block (J/B).

NO

>> Replace blower relay. Refer to 

PG-113, "Fuse, Connector and Terminal Arrangement"

.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

Fuse block (J/B)

BCM

Continuity

Connector

Terminal

Connector

Terminal

E103

6F

M122

102

Existed

Fuse block (J/B)

Ground

Continuity

Connector

Terminal

E103

6F

Not existed

Blower relay

Ground

Continuity

Terminal

2

Existed

(+)

(–)

Voltage (V)

(Approx.)

Blower relay

Terminal

5

Ground

Battery voltage

PCS

B2615 BLOWER RELAY CIRCUIT

PCS-57

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

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Component Inspection

INFOID:0000000005516983

1.

CHECK BLOWER RELAY

1.

Turn ignition switch OFF.

2.

Remove blower relay.

3.

Check the continuity between blower relay terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace blower relay. Refer to 

PG-113, "Fuse, Connec-

tor and Terminal Arrangement"

.

Terminals

Condition

Continuity

3 and 5

12 V direct current supply between terminals 1 and 2

Existed

No current supply

Not existed

PBIB0098E