Nissan Murano. Manual - part 854

HAC-190

< DTC/CIRCUIT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK MODE DOOR MOTOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect mode door motor connector.

3.

Check continuity between mode door motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace mode door motor.

NO

>> Repair harness or connector.

(+)

(

−

)

Voltage

Mode door motor

—

Connector

Terminal

M310

3

Ground

SJIA1453J

Mode door motor

—

Continuity

Connector

Terminal

M310

2

Ground

Existed

B263D, B263E, B263F INTAKE DOOR MOTOR

HAC-191

< DTC/CIRCUIT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

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B263D, B263E, B263F INTAKE DOOR MOTOR

Description

INFOID:0000000009722187

COMPONENT DESCRIPTION

Intake Door Motor

• The intake door motor (1) is attached to the blower unit.

• It rotates so that air is drawn from inlets set by the A/C auto amp.

Motor rotation is conveyed to a lever which activates the intake
door.

DTC Logic

INFOID:0000000009722188

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to 

HAC-

170, "DTC Logic"

 or 

HAC-171, "DTC Logic"

. 

DTC CONFIRMATION PROCEDURE

1.

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT

1.

Using CONSULT, perform “SELF-DIAGNOSIS RESULTS” of HVAC. 

2.

Check if any DTC No. is displayed in the self-diagnosis results. 

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to 

HAC-

170, "DTC Logic"

 or 

HAC-171, "DTC Logic"

. 

Is DTC No.“B263D”, “B263E” or “B263F” displayed?

YES

>> Perform trouble diagnosis for the intake door motor. Refer to 

HAC-192, "Diagnosis Procedure"

. 

NO

>> GO TO 2.

2.

FUNCTION INSPECTION

1.

Press intake switch.

2.

The intake switch indicator is turned ON. (REC position)

3.

Listen for intake door position change (Slight change of blower sound can be heard.).

4.

Press intake switch again.

5.

The intake switch indicator is turned OFF. (FRE position)

6.

Listen for intake door position change (Slight change of blower sound can be heard.).

Does it operate normally?

YES

>> INSPECTION END

NO

>> Check intake door motor installation, and repair or replace the malfunctioning parts.

:

Vehicle front

JPIIA0516ZZ

DTC

Items

 (CONSULT screen terms)

Diagnostic item is detected when...

Possible cause

B263D

FRE DOOR FAIL

When the malfunctioning intake door posi-
tion is detected at FRE position

• Intake door motor (PBR internal 

circuit is open or shorted)

• A/C auto amp.
• Harness and connector (LAN com-

munication line is open or shorted)

B263E

20P FRE DOOR FAIL

When the malfunctioning intake door posi-
tion is detected at 20%FRE position

B263F

REC DOOR FAIL

When the malfunctioning intake door posi-
tion is detected at REC position

HAC-192

< DTC/CIRCUIT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B263D, B263E, B263F INTAKE DOOR MOTOR

Diagnosis Procedure

INFOID:0000000009722189

1.

CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR

Check voltage between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK SIGNAL FOR INTAKE DOOR MOTOR

Confirm A/C LAN signal between intake door motor harness connector and ground using an oscilloscope.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK INTAKE DOOR MOTOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect intake door motor connector.

3.

Check continuity between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace intake door motor.

NO

>> Repair harness or connector.

(+)

(

−

)

Voltage

Intake door motor

—

Connector

Terminal

M304

1

Ground

Battery voltage

(+)

(

−

)

Voltage

Intake door motor

—

Connector

Terminal

M304

3

Ground

SJIA1453J

Intake door motor

—

Continuity

Connector

Terminal

M304

2

Ground

Existed

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR

HAC-193

< DTC/CIRCUIT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

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B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR

Description

INFOID:0000000009722190

COMPONENT DESCRIPTION

Upper Ventilator Door Motor

• The upper ventilator door motor (1) are attached to the heater &

cooling unit assembly.

• Upper ventilator door motor operates by UPPER VENT switch ON/

OFF when the DEF switch is OFF. 

• Motor rotation is conveyed to a link which activates the upper ven-

tilator door.

DTC Logic

INFOID:0000000009722191

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to 

HAC-

170, "DTC Logic"

 or 

HAC-171, "DTC Logic"

. 

DTC CONFIRMATION PROCEDURE

1.

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT

1.

Using CONSULT, perform “SELF-DIAGNOSIS RESULTS” of HVAC. 

2.

Check if any DTC No. is displayed in the self-diagnosis results. 

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to 

HAC-

170, "DTC Logic"

 or 

HAC-171, "DTC Logic"

. 

Is DTC No.“B2661”, “B2662” or “B2663” displayed?

YES

>> Perform trouble diagnosis for the upper ventilator door motor. Refer to 

HAC-194, "Diagnosis Pro-

cedure"

. 

NO

>> GO TO 2.

2.

FUNCTION INSPECTION

1.

Press the UPPER VENT switch. 

2.

The UPPER VENT switch indicator is turned ON. 

:

Vehicle front

JPIIA0514ZZ

DTC

Items

 (CONSULT screen terms)

Diagnostic item is detected when...

Possible cause

B2661

UPPER VENT DOOR MOT

When the malfunctioning upper ventilator 
door position is detected at open position.

• Upper ventilator door motor (PBR 

internal circuit is open or shorted)

• A/C auto amp.
• Harness and connector (LAN com-

munication line is open or shorted)

B2662

When the malfunctioning upper ventilator 
door position is detected at middle posi-
tion.

B2663

When the malfunctioning upper ventilator 
door position is detected at shut position.