Nissan X-Trail 32. Instruction — part 1407
B24D4 A/C CONTROL COMMUNICATION
HAC-103
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
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HAC
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B24D4 A/C CONTROL COMMUNICATION
DTC Description
INFOID:0000000010939760
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness and connector (A/C control circuit is open or shorted)
• A/C control
• A/C auto amp.
FAIL-SAFE
If a communication error exists between the A/C auto amp. and A/C control for 30 seconds or longer, air con-
ditioning is controlled under the following conditions: A/C auto amp. is controlled in the setting state before the
communication error occurs for following setting.
• Set temperature
• Air outlet
• Blower fan speed
• Air inlet
• A/C switch
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-103, "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:0000000010939761
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check 10 A fuse [No. 14 (without stop/start system), located in fuse block (J/B)], [No. 76 (with stop/start
system)].
NOTE:
Refer to
PG-84, "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 CONTROL POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect A/C control connector.
3.
Turn ignition switch ON.
4.
Check voltage between A/C control harness connector and ground.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
B24D4
A/C CONTROL COMM
(Air conditioning control commu-
nication)
[BUS SIGNAL/MESSAGE ERROR]
A malfunction is detected in the signal that is
sent from A/C control.
HAC-104
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
B24D4 A/C CONTROL COMMUNICATION
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector between A/C control and fuse.
3.
CHECK A/C CONTROL GROUND CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Check continuity between A/C control harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK LIN COMMUNICATION SIGNAL CIRCUIT FOR OPEN
1.
Disconnect A/C auto amp. connector.
2.
Check continuity between A/C control 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 LIN COMMUNICATION SIGNAL CIRCUIT FOR SHORT
Check continuity between A/C control harness connector and ground.
Is the inspection result normal?
YES
>> Replace A/C control. Refer to
HAC-125, "Removal and Installation"
.
NO
>> Repair harness or connector.
+
−
Voltage
(Approx.)
A/C control
Connector
Terminal
M135
4
Ground
Battery voltage
A/C control
—
Continuity
Connector
Terminal
M135
1
Ground
Existed
A/C control
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M135
8
M174
73
Existed
A/C control
—
Continuity
Connector
Terminal
M135
8
Ground
Not existed
POWER SUPPLY AND GROUND CIRCUIT
HAC-105
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
POWER SUPPLY AND GROUND CIRCUIT
A/C AUTO AMP.
A/C AUTO AMP. : Diagnosis Procedure
INFOID:0000000010939762
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check 10 A fuse [No. 20 (without stop/start system), located in fuse block (J/B)], [No. 59 (with stop/start
system)].
NOTE:
Refer to
PG-84, "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. ACCESSORY POWER SUPPLY
1.
Disconnect A/C auto amp. connector.
2.
Turn ignition switch ON.
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.
3.
CHECK A/C AUTO AMP. GROUND CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Check continuity between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-126, "Removal and Installation"
.
NO
>> Repair harness or connector.
A/C CONTROL
A/C CONTROL : Diagnosis Procedure
INFOID:0000000010939763
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check 10 A fuse [No. 20 (without stop/start system), located in fuse block (J/B)], [No. 59 (with stop/start
system)].
NOTE:
Refer to
PG-84, "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 CONTROL POWER SUPPLY
1.
Turn ignition switch OFF.
+
−
Voltage
A/C auto amp.
Connector
Terminal
M174
41
Ground
11 - 14 V
A/C auto amp.
—
Continuity
Connector
Terminal
M174
43
Ground
Existed
HAC-106
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
2.
Disconnect A/C control connector.
3.
Turn ignition switch ON.
4.
Check voltage between A/C control harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector between A/C control and fuse block (J/B).
3.
CHECK A/C CONTROL GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between A/C control harness connector and ground.
Is the inspection result normal?
YES
>> Replace A/C control. Refer to
HAC-125, "Removal and Installation"
.
NO
>> Repair harness or connector.
+
−
Voltage
A/C control
Connector
Terminal
M135
4
Ground
11 - 14 V
A/C control
—
Continuity
Connector
Terminal
M135
1
Ground
Existed
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