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
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
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
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
Is DTC No.“B2661”, “B2662” or “B2663” displayed?
YES
>> Perform trouble diagnosis for the upper ventilator door motor. Refer to
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.
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