Nissan Murano Z51. Manual — part 853
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
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:0000000005514632
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
HAC-68
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR
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
BLOWER 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
BLOWER MOTOR
Description
INFOID:0000000005514633
COMPONENT DESCRIPTION
Brush-less Motor
The blower motor utilizes a brush-less motor with a rotating magnet.
Quietness is improved over previous motors where the brush was
the point of contact and the coil rotated.
Blower Motor Circuit
Component Function Check
INFOID:0000000005514634
1.
CHECK OPERATION
1.
Warm up the engine.
2.
Operate the fan control dial. Check that the fan speed and indicator are switched for all fan speeds.
Does it operate normally?
YES
>> INSPECTION END
NO
>> Perform trouble diagnosis for the blower motor. Refer to
Diagnosis Procedure
INFOID:0000000005514635
1.
CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1.
Using CONSULT-III, 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 any DTC No. displayed?
YES
>> Perform the diagnosis that is applicable to the sensor and actuator. Refer to
.
NO
>> GO TO 2.
2.
CHECK WITH ACTIVE TEST OF CONSULT-III
1.
Using CONSULT-III, perform “HVAC TEST” “ACTIVE TEST” of HVAC to check each output device. Refer
to
HAC-39, "CONSULT-III Function"
.
NOTE:
Perform the ACTIVE TEST after starting the engine because the compressor is operated.
ZHA152H
JSIIA0999ZZ
HAC-70
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
BLOWER MOTOR
2.
Check that the blower motor control signal changes according to each indicator signal.
NOTE:
Perform the inspection of each output device after starting the engine because the compressor is operated.
Does it operate normally?
YES
>> INSPECTION END
NO
>> GO TO 3.
3.
CHECK POWER SUPPLY FOR BLOWER MOTOR
1.
Disconnect blower motor connector.
2.
Turn ignition switch ON.
3.
Check voltage between blower motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 7.
4.
CHECK BLOWER MOTOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between blower motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair harness or connector.
5.
CHECK BLOWER MOTOR CIRCUIT CONTINUITY
1.
Disconnect A/C auto amp. connector.
2.
Check continuity between blower motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 6.
Test item
MODE 1
MODE 2
MODE 3
MODE 4
MODE 5
MODE 6
MODE 7
Mode door position
VENT1
VENT2
B/L1
B/L2
FOOT
D/F
DEF
Intake door position
REC
REC
20%FRE
20%FRE
FRE
FRE
FRE
Air mix door position
(driver & passenger
side)
FULL COLD
FULL HOT
FULL COLD
FULL HOT
FULL HOT
FULL HOT
FULL HOT
Blower motor duty ratio
35%
35%
61%
61%
81%
81%
35%
Compressor (Magnet
clutch)
ON
ON
ON
ON
OFF
OFF
ON
Upper ventilator door
OPEN
SHUT
OPEN
SHUT
SHUT
SHUT
SHUT
(+)
(
−
)
Voltage
Blower motor
—
Connector
Terminal
M98
1
Ground
Battery voltage
Blower motor
—
Continuity
Connector
Terminal
M98
3
Ground
Existed
Blower motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M98
2
M50
32
Existed
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