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![NISSAN TEANA 2008 Service Manual BLOWER MOTOR
HAC-69
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2. Check that the blower motor control signal changes according to each indicator signal.
NOTE:
NISSAN TEANA 2008 Service Manual BLOWER MOTOR
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2. Check that the blower motor control signal changes according to each indicator signal.
NOTE:
](/manual-img/5/57391/w960_57391-2696.png)
BLOWER MOTOR
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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?
Te s t i t e m
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 -
(+) (−)
Vo l ta g e 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
Page 2698 of 5121
![NISSAN TEANA 2008 Service Manual 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 a NISSAN TEANA 2008 Service Manual 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 a](/manual-img/5/57391/w960_57391-2697.png)
HAC-70
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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 PG-101, "
Fuse,
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-
PLY -".
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
(+) (−)
Vol tag e
Blower relay —
1
Ground Battery voltage
3
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BLOWER MOTOR
HAC-71
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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 InspectionINFOID:0000000003846362
1.CHECK BLOWER MOTOR
1. Remove the blower motor. Refer to VTL-32, "
Exploded View".
2. Check that the blower motor rotates smoothly.
Is the inspection result normal?
YES >> END.
NO >> Replace blower motor.
Page 2700 of 5121
![NISSAN TEANA 2008 Service Manual HAC-72
< COMPONENT DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
MAGNET CLUTCH
MAGNET CLUTCH
DescriptionINFOID:0000000003846363
The magnet clutch drives the compressor, by an IPDM E/R signal.
Component Function NISSAN TEANA 2008 Service Manual HAC-72
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MAGNET CLUTCH
MAGNET CLUTCH
DescriptionINFOID:0000000003846363
The magnet clutch drives the compressor, by an IPDM E/R signal.
Component Function](/manual-img/5/57391/w960_57391-2699.png)
HAC-72
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MAGNET CLUTCH
MAGNET CLUTCH
DescriptionINFOID:0000000003846363
The magnet clutch drives the compressor, by an IPDM E/R signal.
Component Function CheckINFOID: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 HAC-72, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID: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" for fuse location.
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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![NISSAN TEANA 2008 Service Manual MAGNET CLUTCH
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5.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform “SELF-DIAGNOSI NISSAN TEANA 2008 Service Manual MAGNET CLUTCH
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5.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform “SELF-DIAGNOSI](/manual-img/5/57391/w960_57391-2700.png)
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5.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC 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 HAC-
42, "DTC Logic" or HAC-43, "DTC Logic".
Is any DTC displayed?
YES >> Perform the diagnosis that is applicable to the sensor and actuator. Refer to HAC-85, "DTC
Index".
NO >> GO TO 6.
6.CHECK A/C AUTO AMP. INPUT SIGNAL
Using CONSULT-III, check “On/Off” of “AIR COND SIG” and “HEATER FAN SW” in “DATA MONITOR” of
HVAC. Refer to HAC-38, "
CONSULT-III Function".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Replace A/C auto amp.
7.CHECK REFRIGERANT PRESSURE SENSOR
Check refrigerant pressure sensor. Refer to EC-348, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair or replace malfunctioning parts.A/C SWITCH ON : AIR COND SIG On
A/C SWITCH OFF : AIR COND SIG Off
FAN CONTROL DIAL ON : HEATER FAN SW On
FAN CONTROL DIAL OFF : HEATER FAN SW Off
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![NISSAN TEANA 2008 Service Manual HAC-74
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A/C CONTROL SIGNAL CIRCUIT
A/C CONTROL SIGNAL CIRCUIT
Diagnosis ProcedureINFOID:0000000003846366
1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT- NISSAN TEANA 2008 Service Manual HAC-74
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A/C CONTROL SIGNAL CIRCUIT
A/C CONTROL SIGNAL CIRCUIT
Diagnosis ProcedureINFOID:0000000003846366
1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-](/manual-img/5/57391/w960_57391-2701.png)
HAC-74
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A/C CONTROL SIGNAL CIRCUIT
A/C CONTROL SIGNAL CIRCUIT
Diagnosis ProcedureINFOID:0000000003846366
1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC 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 HAC-
42, "DTC Logic" or HAC-43, "DTC Logic".
Is any DTC displayed?
YES >> Perform the diagnosis that is applicable to the sensor and actuator. Refer to HAC-85, "DTC
Index".
NO >> GO TO 2.
2.CHECK TX (A/C CONTROL → A/C AUTO AMP.) CIRCUIT CONTINUITY
1. Disconnect the A/C control and the A/C auto amp. connector.
2. Check continuity between A/C control harness connector and A/C auto amp. harness connector.
3. Check continuity between A/C control harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK RX (A/C AUTO AMP. → A/C CONTROL) CIRCUIT CONTINUITY
1. Disconnect the A/C control and the A/C auto amp. connector.
2. Check continuity between A/C control harness connector and A/C auto amp. harness connector.
3. Check continuity between A/C control harness connector and ground.
Is the inspection result normal?
YES >> Perform trouble diagnosis for the A/C control. Refer to HAC-65, "A/C CONTROL : Diagnosis Pro-
cedure".
NO >> Repair harness or connector.
A/C control A/C auto amp.
Continuity
Connector Terminal Connector Terminal
M954M507 Existed
A/C control
—Continuity
Connector Terminal
M95 4 Ground Not existed
A/C control A/C auto amp.
Continuity
Connector Terminal Connector Terminal
M953M506 Existed
A/C control
—Continuity
Connector Terminal
M95 3 Ground Not existed
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![NISSAN TEANA 2008 Service Manual A/C AUTO AMP.
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ECU DIAGNOSIS
A/C AUTO AMP.
Reference ValueINFOID:0000000003846375
VALUES ON THE DIAGNOSIS TOOL
CONSULT- NISSAN TEANA 2008 Service Manual A/C AUTO AMP.
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Reference ValueINFOID:0000000003846375
VALUES ON THE DIAGNOSIS TOOL
CONSULT-](/manual-img/5/57391/w960_57391-2702.png)
A/C AUTO AMP.
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ECU DIAGNOSIS
A/C AUTO AMP.
Reference ValueINFOID:0000000003846375
VALUES ON THE DIAGNOSIS TOOL
CONSULT-III MONITOR ITEM
TERMINAL LAYOUT
PHYSICAL VALUES
Monitor item Condition Value/Status
COMP REQ SIGEngine: Run at idle after
warming up A/C switch: ON
(Compressor operation sta-
tus) On
A/C switch: OFF Off
FAN REQ SIGEngine: Run at idle after
warming up Blower fan: ON On
Blower fan: OFF Off
AMB TEMP SEN Ignition switch ON — −30 - 55°C (−22 - 131°F)
IN-VEH TEMP Ignition switch ON — −30 - 55°C (−22 - 131°F)
INT TEMP SEN Ignition switch ON — −30 - 55°C (−22 - 131°F)
SUNLOAD SEN Ignition switch ON —0 - 1045 W/m
2
(0 - 900 kcal/m2·h)
AMB SEN CAL Ignition switch ON —−30 - 55°C (−22 - 131°F)
IN-VEH CAL Ignition switch ON —−30 - 55°C (−22 - 131°F)
INT TEMP CAL Ignition switch ON —−30 - 55°C (−22 - 131°F)
SUNL SEN CAL Ignition switch ON —0 - 1045 W/m
2
(0 - 900 kcal/m2·h)
FAN DUTYEngine: Run at idle after
warming up Blower fan: ON 21 - 91%
Blower fan: OFF 0%
XM Ignition switch ON —−100 - 150°
ENG COOL TEMP Ignition switch ON —Values according to coolant
temperature
VEHICLE SPEED Driving —Equivalent to speedometer
reading
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![NISSAN TEANA 2008 Service Manual HAC-76
< ECU DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
A/C AUTO AMP.
Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
+−Signal nameInput/
Output
6
(L)Ground TX (AMP > SW·DISP) I NISSAN TEANA 2008 Service Manual HAC-76
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A/C AUTO AMP.
Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
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+−Signal nameInput/
Output
6
(L)Ground TX (AMP > SW·DISP) I](/manual-img/5/57391/w960_57391-2703.png)
HAC-76
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A/C AUTO AMP.
Te r m i n a l N o .
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ConditionVa l u e
(Approx.)
+−Signal nameInput/
Output
6
(L)Ground TX (AMP > SW·DISP) Input — —
7
(P)Ground RX (SW > AMP) Output — —
10
(L/R)Ground LAN signalInput/
Output—
11
(L/W)GroundPower supply for each door
motorInput Ignition switch ON Battery voltage
15
(O)Ground Sunload sensor signal Input — —
16
(R/G)Ground Intake sensor signal Input — —
17
(V/W)Ground ACC Power supply — Ignition switch ACC Battery voltage
19
(B)Ground Ground — Ignition switch ON 0 V
20
(G/W)Ground IGN Power supply — Ignition switch ON Battery voltage
26
(GR)GroundRear window defogger feed-
back signalInputRear window defogger switch:
OFF0 V
Rear window defogger switch:
ON12 V
27
(GR/W)GroundRear window defogger ON
signalOutput—12 V
When rear window defogger
switch is pushed.0 V
32
(L/Y)Ground Blower motor control signal Output Ignition switch ON
Blower speed: 1st speed
(manual)
34
(P)GroundA/C auto amp. connection
recognition signalOutput Ignition switch ON 5V
35
(O/B)Ground Ambient sensor signal Input — —
36
(LG)Ground In-vehicle sensor signal Input — —
37
(B/Y)Ground Sensor ground — Ignition switch ON 0 V
39
(B)Ground Ground — Ignition switch ON 0 V
40
(Y/R)Ground BATT Power supply — Ignition switch OFF Battery voltage
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