Infiniti QX56 (Z62). Manual — part 804
B266B, B266C REAR IN-VEHICLE SENSOR
HAC-107
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK REAR IN-VEHICLE SENSOR
Check rear in-vehicle sensor. Refer to
HAC-107, "Component Inspection"
Is the inspection result normal?
YES
>> Replace A/C auto amp.. Refer to
HAC-146, "Removal and Installation"
NO
>> Replace rear in-vehicle sensor. Refer to
HAC-148, "REAR A/C UNIT ASSEMBLY : Removal and
4.
CHECK REAR IN-VEHCLE SENSOR POWER SUPPLY CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Check continuity between rear in-vehicle sensor harness connector and A/C auto amp. harness connec-
tor.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair harness or connector.
5.
CHECK REAR IN-VEHCLE SENSOR POWER SUPPLY CIRCUIT FOR GROUND SHORT
Check continuity between rear in-vehicle sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair harness or connector.
6.
CHECK REAR IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT FOR POWER SHORT
1.
Turn ignition switch ON.
2.
Check voltage between rear in-vehicle 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:0000000006275942
1.
CHECK REAR IN-VEHICLE SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect rear in-vehicle sensor connector.
3.
Check resistance between rear in-vehicle sensor terminals.
Rear in-vehicle sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
B211
1
M50
8
Existed
Rear in-vehicle sensor
—
Continuity
Connector
Terminal
B211
1
Ground
Not existed
+
−
Voltage
(Approx.)
Rear in-vehicle sensor
Connector
Terminal
B211
1
Ground
0 V
HAC-108
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
B266B, B266C REAR IN-VEHICLE SENSOR
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace rear in-vehicle sensor. Refer to
HAC-148, "REAR A/C UNIT ASSEMBLY : Removal and
Terminal
Condition
Resistance: k
Ω
Temperature:
°
C (
°
F)
1
2
−
15 (5)
12.34
−
10 (14)
9.62
−
5 (23)
7.56
0 (32)
6.00
5 (41)
4.80
10 (50)
3.87
15 (59)
3.14
20 (68)
2.57
25 (77)
2.12
30 (86)
1.76
35 (95)
1.47
40 (104)
1.23
45 (113)
1.04
B27B0 A/C AUTO AMP.
HAC-109
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
B27B0 A/C AUTO AMP.
DTC Logic
INFOID:0000000006275946
DTC DETECTION LOGIC
NOTE:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010.
.
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
HAC-109, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006275947
1.
PERFORM SELF DIAGNOSTIC
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “Self Diagnostic Result” mode of “HVAC” using CONSULT-III.
3.
Touch “ERASE”.
4.
Turn ignition switch OFF.
5.
Turn ignition switch ON.
6.
Perform “DTC CONFIRMATION PROCEDURE”. Refer to
Is DTC detected again?
YES
>> Replace A/C auto amp. Refer to
HAC-146, "Removal and Installation"
.
NO
>> INSPECTION END
DTC
Items
(CONSULT-III screen terms)
DTC detection condition
Possible cause
B27B0
A/C AUTO AMP.
A/C auto amp. EEPROM system is mal-
functioning.
A/C auto amp.
HAC-110
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
A/C AUTO AMP.
A/C AUTO AMP. : Diagnosis Procedure
INFOID:0000000006275948
1.
CHECK FUSE
Check 10A fuse [No. 9, 19, and 4, located in the fuse block (J/B)].
NOTE:
Refer to
PG-140, "Fuse, Connector and Terminal Arrangement"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.
CHECK A/C AUTO AMP. POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Check voltage between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector between A/C auto amp. and fuse block (J/B).
3.
CHECK A/C AUTO AMP. GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
FRONT AIR MIX DOOR MOTOR (DRIVER SIDE)
FRONT AIR MIX DOOR MOTOR (DRIVER SIDE) : Diagnosis Procedure
INFOID:0000000006275949
1.
CHECK FRONT AIR MIX DOOR MOTOR (DRIVER SIDE) POWER SUPPLY
1.
Turn ignition switch ON.
2.
Check voltage between front air mix door motor LH harness connector and ground.
+
−
Voltage
A/C auto amp.
Ignition switch position
Connector
Terminal
OFF
ACC
ON
M50
4
Ground
Approx. 0 V
Battery voltage
Battery voltage
23
Approx. 0 V
Approx. 0 V
Battery voltage
3
Battery voltage
Battery voltage
Battery voltage
A/C auto amp.
—
Continuity
Connector
Terminal
M50
2
Ground
Existed
22
37
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