Infiniti QX56 (Z62). Manual — part 798
B262A, B262B, B2657, B2658 EXHAUST GAS/OUTSIDE ODOR DETECTING
SENSOR
HAC-83
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
B262A, B262B, B2657, B2658 EXHAUST GAS/OUTSIDE ODOR DETECT-
ING SENSOR
DTC Logic
INFOID:0000000006275918
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
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006275919
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check 10A fuse [No.4, located in 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 EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect exhaust gas / outside odor detecting sensor connector.
3.
Turn ignition switch ON.
4.
Check voltage between exhaust gas / outside odor detecting sensor harness and ground.
DTC
Items
(CONSULT-III screen terms)
DTC detection condition
Possible cause
B262A
GAS SENSOR
Exhaust gas / outside odor detecting sensor
duty ratio 15% or less.
• Exhaust gas / outside odor detect-
ing sensor
• A/C auto amp.
• Harness or connectors
(The sensor circuit is open or short-
ed.)
B262B
Exhaust gas / outside odor detecting sensor
duty ratio 85% or more.
B2657
CAS SENSOR CIRCUIT
Exhaust gas / outside odor detecting sensor
duty ratio 0%.
B2658
Exhaust gas / outside odor detecting sensor
duty ratio 100%.
+
−
Voltage
(Approx.)
Exhaust gas / outside odor detect-
ing sensor
Connector
Terminal
E117
1
Ground
Battery voltage
HAC-84
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
B262A, B262B, B2657, B2658 EXHAUST GAS/OUTSIDE ODOR DETECTING
SENSOR
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector between exhaust gas / outside odor detecting sensor and fuse block
(J/B).
3.
CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between exhaust gas / outside odor detecting sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between exhaust gas / outside odor detecting sensor harness connector and ground.
Is the inspection result normal?
YES
>> Replace exhaust gas / outside odor detecting sensor. Refer to
HAC-151, "Removal and Installa-
.
NO
>> GO TO 5.
5.
CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp.connector.
3.
Check continuity between exhaust gas / outside odor detecting sensor harness connector and A/C auto
amp. connector.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair harness or connector.
6.
CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT FOR GROUND
SHORT
Check continuity between exhaust gas / outside odor detecting sensor harness connector and ground.
Is the inspection result normal?
Exhaust gas / outside odor detect-
ing sensor
—
Continuity
Connector
Terminal
E117
2
Ground
Existed
+
−
Voltage
(Approx.)
Exhaust gas / outside odor detect-
ing sensor
Connector
Terminal
E117
3
Ground
5 V
Exhaust gas / outside odor detect-
ing sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
E117
3
M50
10
Existed
Exhaust gas / outside odor detect-
ing sensor
—
Continuity
Connector
Terminal
E117
3
Ground
Not existed
B262A, B262B, B2657, B2658 EXHAUST GAS/OUTSIDE ODOR DETECTING
SENSOR
HAC-85
< 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 7.
NO
>> Repair harness or connector.
7.
CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT FOR POWER
SHORT
Check voltage between exhaust gas / outside odor detecting sensor harness 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.
+
−
Voltage
(Approx.)
Exhaust gas / outside odor detect-
ing sensor
Connector
Terminal
E117
3
Ground
0 V
HAC-86
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
B2630, B2631 SUNLOAD SENSOR (DRIVER SIDE)
B2630, B2631 SUNLOAD SENSOR (DRIVER SIDE)
DTC Logic
INFOID:0000000006275920
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.
.
• Sunload sensor may register a malfunction when indoors, at dusk, or at other times when light is insufficient.
When performing the diagnosis indoors, use a lamp (60 W or more) that is pointed at the sunload sensor.
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-103, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006275921
1.
CHECK SUNLOAD SENSOR POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect sunload sensor connector.
3.
Turn ignition switch ON.
4.
Check voltage between sunload sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK SUNLOAD SENSOR GROUND CIRCUIT
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.
DTC
Items
(CONSULT-III screen terms)
DTC detection condition
Possible cause
B2630
SUNLOAD SENSOR
Detected calorie at sunload sensor (driver side)
2832 W/m
2
(2436 kcal/m
2
·h) or more.
• Sunload sensor
• A/C auto amp.
• Harness or connectors
[The sensor circuit (driver side) is
open or shorted.]
B2631
Detected calorie at sunload sensor (driver side)
64.7 W/m
2
(55.6 kcal/m
2
·h) or less.
+
−
Voltage
(Approx.)
Sunload sensor
Connector
Terminal
M74
2
Ground
5 V
Sunload sensor
—
Continuity
Connector
Terminal
M74
3
Ground
Existed
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