Nissan Murano Z51. Manual - part 1076

PCS-46

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

DIAGNOSIS SYSTEM (BCM)

*: OFF is displayed when brake pedal is depressed while brake switch power supply is OFF.

ACTIVE TEST

PRMT RKE STRT

NOTE:
This item is displayed, but cannot be monitored. 

KEY SW -SLOT

Indicates [ON/OFF] condition of key slot.

TRNK/HAT MNTR

NOTE:
This item is displayed, but cannot be monitored. 

RKE-LOCK

Indicates [ON/OFF] condition of LOCK signal from Intelligent Key.

RKE-UNLOCK

Indicates [ON/OFF] condition of UNLOCK signal from Intelligent Key.

RKE-TR/BD

NOTE:
This item is displayed, but cannot be monitored. 

RKE-PANIC

Indicates [ON/OFF] condition of PANIC button of Intelligent Key.

RKE-P/W OPEN

Indicates [ON/OFF] condition of P/W DOWN signal from Intelligent Key.

RKE-MODE CHG

Indicates [ON/OFF] condition of MODE CHANGE signal from Intelligent Key.

RKE OPE COUN1

When remote keyless entry receiver receives the signal transmitted while operating on Intelligent Key, the 
numerical value start changing.

RKE OPE COUN2

NOTE:
This item is displayed, but cannot be monitored. 

Monitor Item

Condition

Test item

Description

BATTERY SAVER

This test is able to check interior room lamp operation.
The interior room lamp will be activated after “ON” on CONSULT-III screen is touched.

PW REMOTO DOWN SET

This test is able to check power window down operation.
The power window down will be activated after “ON” on CONSULT-III screen is touched.

INSIDE BUZZER

This test is able to check warning chime in combination meter operation.
• Take away warning chime sounds when “TAKE OUT” on CONSULT-III screen is touched.
• Key warning chime sounds when “KEY WARN” on CONSULT-III screen is touched.
• P position warning chime sounds when “P RNG WARN” on CONSULT-III screen is touched.
• ACC warning chime sounds when “ACC WARN” on CONSULT-III screen is touched.

OUTSIDE BUZZER

This test is able to check Intelligent Key warning buzzer operation.
The Intelligent Key warning buzzer will be activated after “ON” on CONSULT-III screen is touched.

INDICATOR

This test is able to check warning lamp operation.
• “KEY” Warning lamp illuminates when “KEY ON” on CONSULT-III screen is touched.
• “KEY” Warning lamp flashes when “KEY IND” on CONSULT-III screen is touched.

INT LAMP

This test is able to check interior room lamp operation.
The interior room lamp will be activated after “ON” on CONSULT-III screen is touched.

LCD

This test is able to check meter display information
• Engine start information displays when “BP N” on CONSULT-III screen is touched.
• Engine start information displays when “BP I” on CONSULT-III screen is touched.
• Key ID warning displays when “ID NG” on CONSULT-III screen is touched.
• Steering lock information displays when “ROTAT” on CONSULT-III screen is touched.

NOTE:
For models without steering lock unit, “ROTAT” is displayed, but cannot be tested.

• P position warning displays when “SFT P” on CONSULT-III screen is touched.
• Intelligent Key insert information displays when “INSRT” on CONSULT-III screen is touched.
• Intelligent Key low battery warning displays when “BATT” on CONSULT-III screen is touched.
• Take away through window warning displays when “NO KY” on CONSULT-III screen is touched.
• Take away warning display when “OUTKEY” on CONSULT-III screen is touched.
• OFF position warning display when “LK WN” on CONSULT-III screen is touched.

TRUNK/GLASS HATCH

This test is able to check back door opener actuator open operation.
This actuator opens when “ON” on CONSULT-III screen is touched.

FLASHER

This test is able to check hazard warning lamp operation.
The hazard warning lamps will be activated after “ON” on CONSULT-III screen is touched.

PCS

DIAGNOSIS SYSTEM (BCM)

PCS-47

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

HORN

This test is able to check horn operation.
The horn will be activated after “ON” on CONSULT-III screen is touched.

IGN CONT2

This test is able to check ignition relay operation.
The ignition relay will be activated after “ON” on CONSULT-III screen is touched.

P RANGE

This test is able to check CVT shift selector power supply
CVT shift selector power is supplied when “ON” on CONSULT-III screen is touched.

ENGINE SW ILLUMI

This test is able to check push-ignition switch illumination operation.
Push-ignition switch illumination illuminates when “ON” on CONSULT-III screen is touched.

LOCK INDICATOR

NOTE:
This item is displayed, but cannot be tested.

ACC INDICATOR

This test is able to check indicator in push-ignition switch operation.
Indicator in push-button ignition switch illuminates when “ON” on CONSULT-III screen is touched.

IGNITION ON IND

This test is able to check indicator in push-ignition switch operation.
Indicator in push-button ignition switch illuminates when “ON” on CONSULT-III screen is touched.

KEY SLOT ILLUMI

This test is able to check key slot illumination operation.
Key slot illumination flash when “ON” on CONSULT-III screen is touched.

AUTOMATIC BACK DOOR

NOTE:
This item is displayed, but cannot be tested.

AUTOMATIC SLIDING DOOR

NOTE:
This item is displayed, but cannot be tested.

Test item

Description

PCS-48

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B2553 IGNITION RELAY

DTC/CIRCUIT DIAGNOSIS

B2553 IGNITION RELAY

Description

INFOID:0000000005516970

BCM turns ON the following relays to ignition power supply to each ECU when the ignition switch is turned
ON.
• Ignition relay (inside fuse box)
• Ignition relay (inside IPDM E/R)
• Blower relay
BCM checks any ignition relay ON request for consistency with the actual ignition relay operation status.

DTC Logic

INFOID:0000000005516971

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON under the following conditions (start the engine), 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-48, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005516972

1.

CHECK DTC WITH IPDM E/R

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

PCS-32, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning parts.

2.

CHECK FUSE

Check that the following fuse are not fusing.

Is the fuse fusing?

YES

>> Repair the applicable circuit. And then replace the fuse.

NO

>> GO TO 3.

3.

CHECK IGNITION RELAY FEEDBACK INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check voltage between BCM harness connector and ground.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2553

IGNITION RELAY

BCM detects a difference of signal for 2 seconds or 
more between the following information. 
• Ignition relay (fuse block) ON/OFF operation
• Ignition relay (fuse block) feedback.

• Harness or connectors

(ignition relay feedback circuit is 
open or short)

• BCM
• IPDM E/R

Signal name

Connection position

Fuse No.

Capacity

Ignition power supply

FUSE BLOCK (J/B)

3

10A

PCS

B2553 IGNITION RELAY

PCS-49

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-95, "Removal and Installation"

.

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

>> Replace IPDM E/R. Refer to

PCS-35, "Removal and Installation"

.

NO

>> Repair or replace harness.

(+)

(–)

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