Infiniti QX56 (Z62). Manual — part 799
B2630, B2631 SUNLOAD SENSOR (DRIVER SIDE)
HAC-87
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK SUNLOAD SENSOR
Check sunload sensor. Refer to
HAC-104, "Component Inspection"
.
Is the inspection result normal?
YES
>> Replace A/C auto amp.. Refer to
HAC-146, "Removal and Installation"
NO
>> Replace sunload sensor. Refer to
HAC-149, "Removal and Installation"
4.
CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Check continuity between sunload sensor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair harness or connector.
5.
CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR GROUND SHORT
Check continuity between sunload sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair harness or connector.
6.
CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR POWER SHORT
1.
Turn ignition switch ON.
2.
Check voltage between sunload sensor harness connector and ground.
Is the inspection result normal?
YES
>> Replace A/C auto amp.. Refer to
HAC-146, "Removal and Installation"
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000006275922
1.
CHECK SUNLOAD SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect sunload sensor connector and A/C auto amp. connector.
3.
Turn ignition switch ON.
4.
Check input voltage from sunload sensor between A/C auto amp. harness connector and ground. Refer to
applicable table for normal value.
Sunload sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M74
2
M50
9
Existed
Sunload sensor
—
Continuity
Connector
Terminal
M74
2
Ground
Not existed
+
−
Voltage
(Approx.)
Sunload sensor
Connector
Terminal
M74
2
Ground
0 V
HAC-88
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
B2630, B2631 SUNLOAD SENSOR (DRIVER SIDE)
NOTE:
• When checking indoors, use a lamp of approximately 60 W. Move the lamp towards and away from the
sensor to check.
• The sunload amount produced by direct sunshine in fair weather is equivalent to approximately 0.770
kW/m
2
(662 kcal/m
2
·h).
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace sunload sensor. Refer to
HAC-149, "Removal and Installation"
+
−
A/C auto amp.
Connector
Terminal
M50
9
Ground
JPIIA1659GB
B2632, B2633 FRONT AIR MIX DOOR MOTOR (DRIVER SIDE)
HAC-89
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
B2632, B2633 FRONT AIR MIX DOOR MOTOR (DRIVER SIDE)
DTC Logic
INFOID:0000000006275923
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “Self Diagnostic Result” mode of “HVAC” using CONSULT-III.
3.
Check DTC.
Is DTC detected?
YES
>> Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006275924
1.
CHECK FRONT AIR MIX DOOR MOTOR (DRIVER SIDE) COMMUNICATION SIGNAL
1.
Turn ignition switch ON.
2.
Check output waveform between front air mix door motor LH harness connector and ground with the oscil-
loscope.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CHECK INSTALLATION OF FRONT AIR MIX DOOR MOTOR (DRIVER SIDE)
Check front air mix door motor (driver side) is properly installed. Refer to
Is the inspection result normal?
YES
>> Replace front air mix door motor (driver side). Refer to
HAC-153, "AIR MIX DOOR MOTOR :
.
NO
>> Repair or replace malfunctioning part.
DTC
Items
(CONSULT-III screen terms)
DTC detection condition
Possible cause
B2632
DR AIR MIX DOOR MOT
Front air mix door motor (driver side)
PBR position 95% or more
• Front air mix door motor (driver side)
(PBR internal circuit is open or short-
ed)
• Front air mix door motor (driver side)
installation condition
• A/C auto amp.
• Harness and connector
(LIN communication line is open or
shorted)
B2633
Front air mix door motor (driver side)
PBR position 5% or less
+
−
Output waveform
Front air mix door motor LH
Connector
Terminal
M252
3
Ground
SJIA1453J
HAC-90
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
B2632, B2633 FRONT AIR MIX DOOR MOTOR (DRIVER SIDE)
3.
CHECK FRONT AIR MIX DOOR MOTOR (DRIVER SIDE) COMMUNICATION SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front air mix door motor LH and A/C auto amp. connector.
3.
Check continuity between front air mix door motor LH harness connector and A/C auto amp. harness con-
nector.
Is the inspection result normal?
YES
>> Replace A/C auto amp.. Refer to
HAC-146, "Removal and Installation"
NO
>> Repair harness or connector.
Front air mix door motor LH
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M252
3
M50
16
Existed
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