Nissan Sentra. Manual — part 559
HAC-84
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
POWER SUPPLY AND GROUND CIRCUIT
NO
>> Perform trouble diagnosis for the A/C switch assembly. Refer to
.
A/C SWITCH ASSEMBLY : Diagnosis Procedure
INFOID:0000000009757681
Regarding Wiring Diagram information, refer to
1.
CHECK A/C SWITCH ASSEMBLY POWER SUPPLY
1. Disconnect the A/C switch assembly connector.
2. Turn ignition switch ON.
3. Check voltage between A/C switch assembly harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK FUSE
Check 10A fuse [No.5, located in the fuse block (J/B)].
NOTE:
.
Is the inspection result normal?
YES
>> Check harness for open circuit. Repair or replace if necessary.
NO
>> Check harness for short circuit. Repair or replace if necessary.
3.
CHECK A/C SWITCH ASSEMBLY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between A/C switch assembly harness connector and ground.
Is the inspection result normal?
YES
>> Replace the A/C switch assembly. Refer to
HAC-104, "Removal and Installation"
.
NO
>> Repair the harnesses or connectors.
(+)
(
−)
Voltage
(Approx.)
A/C switch assembly
Connector
Terminal
M59
4
Ground
Battery voltage
A/C switch assembly
—
Continuity
Connector
Terminal
M59
1
Ground
Yes
A/C SWITCH ASSEMBLY SIGNAL CIRCUIT
HAC-85
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
A/C SWITCH ASSEMBLY SIGNAL CIRCUIT
Diagnosis Procedure
INFOID:0000000009757682
Regarding Wiring Diagram information, refer to
1.
CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT
1. Using CONSULT, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC No. is displayed in the self-diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
(U1010).
Is any DTC No. displayed?
YES
>> Perform diagnosis for the applicable DTC. Refer to
NO
>> GO TO 2.
2.
CHECK RX (A/C SWITCH ASSEMBLY
→ A/C AUTO AMP.) CIRCUIT CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect the A/C switch assembly and the A/C auto amp. connectors.
3. Check continuity between A/C switch assembly harness connector and A/C auto amp. harness connector.
4. Check continuity between A/C switch assembly harness connector M79 terminal 10 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK TX (A/C AUTO AMP.
→ A/C SWITCH ASSEMBLY) CIRCUIT CONTINUITY
1. Check continuity between A/C switch assembly harness connector and A/C auto amp. harness connector.
2. Check continuity between A/C switch assembly harness connector M79 terminal 9 and ground.
Is the inspection result normal?
YES
>> Perform trouble diagnosis for the A/C switch assembly. Refer to
.
NO
>> Repair harness or connector.
A/C switch assembly
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M59
8
M34
27
Yes
A/C switch assembly
—
Continuity
Connector
Terminal
M59
8
Ground
No
A/C switch assembly
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M59
9
M34
28
Yes
A/C switch assembly
—
Continuity
Connector
Terminal
M59
9
Ground
No
HAC-86
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
A/C ON SIGNAL
A/C ON SIGNAL
Component Function Check
INFOID:0000000009757683
1.
CHECK A/C ON SIGNAL
With CONSULT
1. Turn ignition switch ON.
2. Operate blower motor.
3. Select “AIR CONDITIONER” of “BCM” using CONSULT.
4. Select “AIR COND SW” in “DATA MONITOR” mode.
5. Check A/C ON signal when the A/C switch is operated.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000009757684
Regarding Wiring Diagram information, refer to
1.
CHECK A/C ON SIGNAL
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Turn ignition switch ON.
4. Check output waveform between A/C auto amp. harness connector and ground with using oscilloscope.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-105, "Removal and Installation"
.
NO
>> GO TO 2.
2.
CHECK A/C ON SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between A/C auto amp. harness connector and BCM harness connector.
Monitor item
Condition
Status
AIR COND SW
A/C switch
ON (A/C indicator:
ON)
On
OFF (A/C indicator:
OFF)
Off
+
−
Output waveform
A/C auto amp.
Connector
Terminal
M34
15
Ground
JPMIA0012GB
A/C ON SIGNAL
HAC-87
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
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 A/C ON SIGNAL CIRCUIT FOR SHORT
Check continuity between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-73, "Removal and Installation"
NO
>> Repair harness or connector.
A/C auto amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M34
15
M84
27
Yes
A/C auto amp.
—
Continuity
Connector
Terminal
M34
15
Ground
No
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст