Nissan Teana J32. Instruction — part 675
BLOWER MOTOR
HAC-69
< COMPONENT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
2.
Check that the blower motor control signal changes according to each indicator signal.
NOTE:
• Perform the inspection of each output device after starting the engine because the compressor is oper-
ated.
• When choosing to “MODE 7”, error message is displayed but it is not malfunction.
Does it operate normally?
YES
>> INSPECTION END
NO
>> GO TO 3.
3.
CHECK POWER SUPPLY FOR BLOWER MOTOR
1.
Disconnect blower motor connector.
2.
Turn ignition switch ON.
3.
Check voltage between blower motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 7.
4.
CHECK BLOWER MOTOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between blower motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair harness or connector.
5.
CHECK BLOWER MOTOR CIRCUIT CONTINUITY
1.
Disconnect A/C auto amp. connector.
2.
Check continuity between blower motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
Test item
MODE 1
MODE 2
MODE 3
MODE 4
MODE 5
MODE 6
MODE 7
Mode door position
VENT
B/L1
B/L2
AUTO FOOT
D/F
DEF
-
Intake door position
REC
REC
20% FRE
FRE
FRE
FRE
-
Air mix door position
(driver & passenger
side)
FULL COLD
FULL COLD
FULL HOT
FULL HOT
FULL HOT
FULL HOT
-
Blower motor duty ratio
37%
91%
65%
65%
65%
91%
-
Compressor (Magnet
clutch)
ON
ON
OFF
OFF
ON
ON
-
(+)
(
−
)
Voltage
Blower motor
—
Connector
Terminal
M98
1
Ground
Battery voltage
Blower motor
—
Continuity
Connector
Terminal
M98
3
Ground
Existed
Blower motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M98
2
M50
32
Existed
HAC-70
< COMPONENT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
BLOWER MOTOR
YES
>> GO TO 6.
NO
>> Repair harness or connector.
6.
CHECK A/C AUTO AMP. OUTPUT SIGNAL
1.
Reconnect blower motor connector and A/C auto amp. connector.
2.
Turn ignition switch ON.
3.
Set MODE switch to the VENT position.
4.
Check the output waveform between blower motor harness connector and ground using an oscilloscope,
while varying the fan speed from 1 to 7.
Is the inspection result normal?
YES
>> Replace the blower motor.
NO
>> Replace the A/C auto amp.
7.
CHECK POWER VOLTAGE OF BLOWER RELAY
1.
Turn the ignition switch OFF.
2.
Remove the blower relay. Refer to
PG-101, "Fuse, Connector and Terminal Arrangement"
3.
Turn the ignition switch ON.
4.
Check the voltage between blower relay fuse block side terminal and ground. Refer to
Connector and Terminal Arrangement"
for relay terminal assignment.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Inspection the power supply circuit. Refer to
PG-55, "Wiring Diagram - IGNITION POWER SUP-
8.
CHECK BLOWER RELAY
1.
Turn the ignition switch OFF.
2.
Install the blower relay. Refer to
PG-101, "Fuse, Connector and Terminal Arrangement"
.
3.
Turn the ignition switch ON.
4.
Check the operating sound of blower relay.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace the blower relay.
9.
CHECK FUSE
Check 15A fuses (Nos. 21 and 22).
JPIIA1025GB
(+)
(
−
)
Voltage
Blower relay
—
1
Ground
Battery voltage
3
BLOWER MOTOR
HAC-71
< COMPONENT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
NOTE:
Refer to
PG-101, "Fuse, Connector and Terminal Arrangement"
for fuse location.
Is the inspection result normal?
YES
>> Repair the harnesses or connectors.
NO
>> Replace the fuse after repairing the applicable circuit.
Component Inspection
INFOID:0000000003846362
1.
CHECK BLOWER MOTOR
1.
Remove the blower motor. Refer to
2.
Check that the blower motor rotates smoothly.
Is the inspection result normal?
YES
>> END.
NO
>> Replace blower motor.
HAC-72
< COMPONENT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
MAGNET CLUTCH
MAGNET CLUTCH
Description
INFOID:0000000003846363
The magnet clutch drives the compressor, by an IPDM E/R signal.
Component Function Check
INFOID:0000000003846364
1.
FUNCTION INSPECTION
1.
Press AUTO switch.
2.
“AUTO” is indicated on the display.
3.
Check that the indicator of the A/C switch turns on. Check visually and by sound that the compressor is
operating (the discharge air temperature or fan speed varies depending on the ambient temperature, in-
vehicle temperature, and temperature setting).
4.
Press the A/C switch.
5.
Check that the indicator of the A/C switch turns OFF. Check visually and by sound that the compressor
stops.
Does it operate normally?
YES
>> INSPECTION END
NO
>> Perform trouble diagnosis for the compressor. Refer to
Diagnosis Procedure
INFOID:0000000003846365
1.
INSPECTION IN AUTO ACTIVE TEST MODE
Perform “AUTO ACTIVE TEST”. Refer to
PCS-11, "Diagnosis Description"
.
Does it operate normally?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK MAGNET CLUTCH
1.
Turn the ignition switch OFF.
2.
Disconnect the magnet clutch connector.
3.
Directly apply the battery voltage to the magnet clutch. Check for operation visually and by sound.
Does it operate normally?
YES
>> GO TO 3.
NO
>> Replace the compressor.
3.
CHECK MAGNET CLUTCH CIRCUIT CONTINUITY
1.
Turn the ignition switch OFF.
2.
Disconnect IPDM E/R connector.
3.
Check continuity between magnet clutch harness connector and IPDM E/R harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK FUSE
Check 10A fuse (No. 49).
NOTE:
Refer to
PG-101, "Fuse, Connector and Terminal Arrangement"
Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> Replace the fuse after repairing the applicable circuit.
IPDM E/R
Compressor
Continuity
Connector
Terminal
Connector
Terminal
F12
48
F18
1
Existed
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