Nissan X-Trail 32. Instruction — part 1429
U1010 CONTROL UNIT (CAN)
HAC-191
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
U1010 CONTROL UNIT (CAN)
DTC Description
INFOID:0000000010939840
DTC DETECTION LOGIC
POSSIBLE CAUSE
A/C amp. (CAN communication function malfunction)
FAIL-SAFE
—
DTC CONFIRMATION PROCEDURE
1.
PERFORM SELF-DIAGNOSIS
With CONSULT
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.
3.
Check DTC.
Is DTC detected?
YES
>> Refer to
HAC-191, "Diagnosis Procedure"
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010939841
1.
REPLACE A/C AMP.
Replace A/C amp. Refer to
HAC-222, "Removal and Installation"
.
>> INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
U1010
CONTROL UNIT(CAN)
[CONTROL UNIT(CAN)]
When detecting error during the initial diagnosis of CAN controller of A/C amp.
HAC-192
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
B24A4 INTAKE SENSOR
B24A4 INTAKE SENSOR
DTC Description
INFOID:0000000010939842
DTC DETECTION LOGIC
POSSIBLE CAUSE
[CIRCUIT SHORT TO GROUND]
• Intake sensor
• A/C amp.
• Harness or connectors (The sensor circuit is shorted to ground.)
[CIRC SHORT TO BATT OR OPEN]
• Intake sensor
• A/C amp.
• Harness or connectors (The sensor circuit is open or shorted to battery.)
FAIL-SAFE
—
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Turn ignition switch ON.
2.
Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.
3.
Check DTC.
Is DTC detected?
YES
>> Refer to
HAC-192, "Diagnosis Procedure"
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010939843
NOTE:
The intake sensor cannot be reused. If the intake sensor harness connector is disconnected, sensor must be
replaced.
1.
CHECK INTAKE SENSOR SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between A/C amp. harness connector and ground
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
B24A4
INTAKE SENSOR
(Intake sensor)
[CIRCUIT SHORT TO GROUND]
The intake sensor recognition temperature is
too low [less than
−
44
°
C (
−
47
°
F)].
[CIRC SHORT TO BATT OR OPEN]
The intake sensor recognition temperature is
too high [more than 100
°
C (212
°
F)].
B24A4 INTAKE SENSOR
HAC-193
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL 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 6.
NO
>> GO TO 2.
2.
CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect A/C amp. connector.
3.
Check continuity between intake sensor harness connector and A/C amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK INTAKE SENSOR GROUND CIRCUIT FOR OPEN
1.
Check continuity between intake sensor harness connector and A/C amp harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR SHORT
1.
Check continuity between intake sensor harness connector and ground.
2.
Check voltage between intake harness connector and ground
+
−
Condition
Voltage
A/C amp.
Connector
Terminal
M132
21
Ground
Sensor detection
temperature
−
20
°
C (
−
4
°
F)
4.41 V
−
10
°
C (14
°
F)
4.09 V
0
°
C (32
°
F)
3.68 V
10
°
C (50
°
F)
3.21 V
20
°
C (68
°
F)
2.71 V
25
°
C (77
°
F)
2.47 V
30
°
C (86
°
F)
2.23 V
40
°
C (104
°
F)
1.80 V
Intake sensor
A/C amp.
Continuity
Connector
Terminal
Connector
Terminal
M175
1
M132
21
Existed
Intake sensor
A/C amp.
Continuity
Connector
Terminal
Connector
Terminal
M175
2
M132
18
Existed
Intake sensor
—
Continuity
Connector
Terminal
M175
1
Ground
Not existed
+
−
Voltage
Intake sensor
Connector
Terminal
M175
1
Ground
0 V
HAC-194
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
B24A4 INTAKE SENSOR
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair harness or connector.
5.
CHECK INTAKE SENSOR
Check intake sensor. Refer to
HAC-194, "Component Inspection"
Is the inspection result normal?
YES
>> Replace A/C amp. Refer to
HAC-222, "Removal and Installation"
.
NO
>> Replace intake sensor. Refer to
HAC-224, "Removal and Installation"
6.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace A/C amp. Refer to
HAC-222, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning parts.
Component Inspection
INFOID:0000000010939844
NOTE:
The intake sensor cannot be reused. If the intake sensor harness connector is disconnected, sensor must be
replaced.
1.
CHECK INTAKE SENSOR
1.
Remove intake sensor. Refer to
HAC-224, "Removal and Installation"
.
2.
Check resistance between intake sensor harness connector terminals. Refer to applicable table for the
normal value.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace intake sensor. Refer to
HAC-224, "Removal and Installation"
Intake sensor
Condition
Resistance: k
Ω
Con-
nector
Terminal
Temperature:
°
C (
°
F)
M175
1
2
−
20 (
−
4)
16.00
−
10 (14)
9.62
0 (32)
6.00
10 (50)
3.87
20 (68)
2.57
25 (77)
2.12
30 (86)
1.76
40 (104)
1.23
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