Nissan Primera P12. Instruction — part 22
TROUBLE DIAGNOSIS
ATC-81
C
D
E
F
G
H
I
K
L
M
A
B
ATC
1.
CHECK POWER SUPPLY FOR COMPRESSOR
Disconnect compressor harness connector.
OK or NG
OK
>> Check magnet clutch coil.
1. If NG, replace magnet clutch. Refer to
"Compressor Clutch (Except F9Q Engine Models)"
.
2. Go to self-diagnosis function confirmation procedure
ATC-49, "FUNCTION CONFIRMATION
and perform self-diagnosis STEP-4. Confirm that magnet clutch operation is in
good order.
NG
>> Disconnect A/C relay. And GO TO 2.
2.
CHECK CIRCUIT CONTINUITY BETWEEN A/C RELAY AND COMPRESSOR
OK or NG
OK
>> Check harness for short. And GO TO 3.
NG
>> Repair harness or connector.
3.
CHECK POWER SUPPLY FOR A/C RELAY
Disconnect A/C relay.
OK or NG
OK
>> GO TO 4.
NG
>> Check power supply circuit and 10A (No.15 fuse,
located in the fuse block). Refer to
PG-10, "IGNITION POWER SUPPLY — IGNITION SW. IN
.
●
If OK, check for open circuit in wiring harness. Repair or replace as necessary.
●
If NG, replace fuse and check wiring harness for short circuit. Repair or replace as necessary.
Terminal
Voltage
(+)
(
−
)
Compressor
connector
Terminal No.
(Wire color)
E32
1 (L/R)
Ground
Battery voltage
RJIA0295E
Terminal
Continuity
(+)
(
−
)
A/C relay con-
nector
Terminal No.
(Wire color)
Compressor
connector
Terminal No.
(Wire color)
E17
3 (L/R)
E32
1 (L/R)
Yes
RJIA0793E
Terminal
Voltage
(+)
(
−
)
A/C relay con-
nector
Terminal No.
(Wire color)
E17
1 (L/Y)
Ground
Battery voltage
E17
5 (L/Y)
RJIA0794E
ATC-82
TROUBLE DIAGNOSIS
4.
CHECK A/C RELAY AFTER DISCONNECTING IT
Refer to
.
OK or NG
OK
>> Reconnect A/C relay. And GO TO 5.
NG
>> 1. Replace A/C relay.
2. Go to self-diagnosis function confirmation procedure:
ATC-49, "FUNCTION CONFIRMATION
and perform self-diagnosis STEP-4. Confirm that magnet clutch operation is in
good order.
5.
CHECK COIL SIDE CIRCUIT OF A/C RELAY
OK or NG
OK
>> GO TO 6.
NG
>> Repair harness or connector.
6.
CHECK AMBIENT SENSOR
Refer to
ATC-100, "Ambient Sensor Circuit"
.
OK or NG
OK
>>
●
Except YD engine models: GO TO 7.
●
YD engine models: GO TO 8.
NG
>> Repair or replace the malfunctioning part (s).
7.
CHECK REFRIGERANT PRESSURE SENSOR (EXCEPT YD ENGINE MODELS)
Refer to
ATC-86, "Refrigerant Pressure Sensor (Except YD Engine Models)"
.
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace the malfunctioning part (s).
Terminal
Continuity
(+)
(
−
)
A/C relay
connector
Terminal No.
(Wire color)
Smart
entrance con-
trol unit con-
nector
Terminal No.
(Wire color)
E17
2 (L)
M42
41 (L)
Yes
RJIA0795E
TROUBLE DIAGNOSIS
ATC-83
C
D
E
F
G
H
I
K
L
M
A
B
ATC
8.
CHECK COMPRESSOR FEED BACK SIGNAL
OK or NG
OK
>> GO TO 9.
NG
>> GO TO 16.
9.
CHECK FAN ON SIGNAL
OK or NG
OK
>> GO TO 10.
NG
>>
●
If the voltage is approx. 5V when the blower fan is
ON: Replace the auto amp.
●
If the voltage is approx. 0V when the blower fan is OFF: GO TO 17.
10.
CHECK COMPRESSOR ON SIGNAL
OK or NG
OK
>> GO TO 11.
NG
>>
●
If the voltage is approx. 5V when the A/C switch is
ON: Replace the auto amp.
●
If the voltage is approx. 0V when the A/C switch is OFF.
–
Except YD engine models: GO TO 18.
–
YD engine models: GO TO 13.
Terminal
Condition
Voltage
(+)
(
−
)
Auto amp.
connector
Terminal No.
(Wire color)
M75
18 (BR/W)
Ground
A/C SW: ON
Approx. 0V
A/C SW: ON
(When refriger-
ant pressure sen-
sor connector is
disconnected)
Approx. 5V
RJIA0796E
Terminal
Condition
Voltage
(+)
(
−
)
Auto amp.
connector
Terminal No.
(Wire color)
M76
29 (LG/B)
Ground
Blower fan: ON
Approx. 0V
Blower fan: OFF
Approx. 5V
RJIA0797E
Terminal
Condition
Voltage
(+)
(
−
)
Auto amp.
connector
Terminal No.
(Wire color)
M76
22 (L/R)
Ground
A/C SW: ON
Approx. 0V
A/C SW: OFF
Approx. 5V
RJIA0798E
ATC-84
TROUBLE DIAGNOSIS
11.
CHECK MULTIPLEX COMMUNICATION CIRCUIT
Refer to multiplex communication circuit.
ATC-110, "Multiplex Communication Circuit"
.
OK or NG
OK
>> GO TO 12.
NG
>> Repair harness or connector.
12.
CHECK CAN CIRCUIT
Refer to CAN communication.
.
OK or NG
OK
>> INSPECTION END.
NG
>> Repair or replace malfunctioning part (s).
13.
CHECK CIRCUIT CONTINUITY BETWEEN DUAL-PRESSURE SWITCH AND AUTO AMP. (YD
ENGINE MODELS)
Disconnect dual-pressure switch connector and auto amp. connec-
tor.
OK or NG
OK
>> GO TO 14.
NG
>> Repair harness or connector.
14.
CHECK DUAL-PRESSURE SWITCH CIRCUIT (YD ENGINE MODELS)
Refer to
ATC-87, "Dual-Pressure Switch (YD Engine Models)"
.
OK or NG
OK
>> GO TO 15.
NG
>> Repair or replace malfunctioning part (s).
15.
CHECK CIRCUIT CONTINUITY BETWEEN DUAL-PRESSURE SWITCH AND COMBINATION
METER (YD ENGINE MODELS)
Disconnect combination meter connector.
OK or NG
OK
>> GO TO 14.
NG
>> Repair harness or connector.
Terminal
Continuity
(+)
(
−
)
Dual-pres-
sure switch
connector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
E46
2 (L/R)
M76
22 (L/R)
Yes
SJIA0209E
Terminal
Continuity
(+)
(
−
)
Dual-pres-
sure switch
connector
Terminal No.
(Wire color)
Combination
meter connec-
tor
Terminal No.
(Wire color)
E46
1 (P/U)
M37
LHD models:
32 (PU)
RHD models:
45 (PU)
Yes
SJIA0210E
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