Nissan Murano. Instruction — part 823
HAC-66
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
B263D, B263E, B263F INTAKE DOOR MOTOR
Diagnosis Procedure
INFOID:0000000009722084
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-67
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR
Description
INFOID:0000000009722085
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:0000000009722086
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.
HAC-68
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR
3.
Check that the air blown from UPPER VENT does not greatly deviate from the air mix ratio.
4.
Press the UPPER VENT switch again.
5.
The UPPER VENT switch indicator is turned OFF.
6.
The air blown from UPPER VENT stops.
Does it operate normally?
YES
>> INSPECTION END
NO
>> Check upper ventilator door motor installation, and repair or replace the malfunctioning parts.
Diagnosis Procedure
INFOID:0000000009722087
1.
CHECK POWER SUPPLY FOR UPPER VENTILATOR DOOR MOTOR
Check voltage between upper ventilator door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK SIGNAL FOR UPPER VENTILATOR DOOR MOTOR
Confirm A/C LAN signal between upper ventilator door motor harness connector and ground using an oscillo-
scope.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
JPIIA0509GB
(+)
(
−
)
Voltage
Upper ventilator door motor
—
Connector
Terminal
M308
1
Ground
Battery voltage
(+)
(
−
)
Voltage
Upper ventilator door motor
—
Connector
Terminal
M308
3
Ground
SJIA1453J
B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR
HAC-69
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
3.
CHECK UPPER VENTILATOR DOOR MOTOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect upper ventilator door motor connector.
3.
Check continuity between upper ventilator door motor harness connector and ground.
Is the inspection result normal?
YES
>> Replace upper ventilator door motor.
NO
>> Repair harness or connector.
Upper ventilator door motor
—
Continuity
Connector
Terminal
M308
2
Ground
Existed
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