display NISSAN TEANA 2014 Service Manual

HAC-26
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
DIAGNOSIS SYSTEM
(A/C AUTO AMP.)
WORK SUPPORT
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of
WORK SUPPORT may be cancelled.
ACTIVE TEST
HVAC TEST
FAN REQ SIG [On/Off] Displays blower switch ON/OFF status transmitted to other units via CAN communica-
tion
FAN DUTY [%] Duty ratio of blower motor judged by A/C auto amp.
XM Target discharge air temperature judged by A/C auto amp. according to the tempera-
ture setting and the value from each sensor
PA TARGET A/TEMP Target discharge front air temperature (passenger side) judged by A/C auto amp. de-
pending on the temperature setting and the value from each sensor.
ENG COOL TEMP [ °C] Water temperature signal value received from ECM via CAN communication
VEHICLE SPEED [km/h
(mph)] Vehicle speed signal value received from meter via CAN communication
Monitor item [Unit] Description
Work item Description Reference
TEMP SET CORRECT
(Setting of difference between tem-
perature setting and control tempera-
ture) If the temperature felt by the customer is different than the airflow
temperature controlled by the temperature setting, the auto ampli-
fier control temperature can be adjusted to compensate for the
temperature setting. HAC-50, "Temperature
Setting Trimmer"
REC MEMORY SET
(REC memory function setting) • If the ignition switch is turned to the OFF position while the REC
switch is set to ON (recirculation), “With” or “Without” of the REC
switch ON (recirculation) condition can be selected.
• If “” was set, the REC switch will be ON (recirculation) when turn-
ing the ignition switch to the ON position again.
• If “Without” was set, the air inlets will be controlled automatically when turning the ignition switch to the ON position again. HAC-51, "Inlet Port
Memory Function (REC)"
FRE MEMORY SET
(FRE memory function setting) • If the ignition switch is turned to the OFF position while the FRE
switch is set to ON (fresh air intake), “With” or “” of the FRE
switch ON (fresh air intake) condition can be selected.
• If “With” was set, the FRE switch will be ON (fresh air intake) when turning the ignition switch to the ON position again.
• If “Without” was set, the air inlets will be controlled automatically when turning the ignition switch to the ON position again. HAC-50, "Inlet Port
Memory Function (FRE)"
BLOW SET
(Blow setting to DEF in FOOT mode) In the FOOT mode, the air blowing to the DEF can change ON/
OFF. HAC-50, "Foot Position
Setting Trimmer"
TARGET EVAPORATOR TEMP UP-
PER LIMIT SETTING Set the target evaporator upper temperature limit.
HAC-51, "Target Evapo-
rator Temp Upper Limit"
Test item Description
HVAC TEST The operation check of A/C system can be performed by selecting the mode. Refer to the fol-
lowing table for the conditions of each mode.
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 VENT B/L D/F1 D/F2 DEF DEF
Intake door position REC REC 20%FRE FRE FRE FRE FRE
Air mix door position
(driver & passenger
side) FULL COLD FULL COLD FULL COLD FULL HOT FULL HOT FULL HOT FULL HOT
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-30
< ECU DIAGNOSIS INFORMATION >[AUTOMATIC AIR CONDITIONER]
A/C AUTO AMP.
*1: With heated steering wheel
DTC Inspection Priority ChartINFOID:0000000009463105
If some DTCs are displayed at the same time, perfo
rm inspections one by one based on the following priority
chart.
22
(B) —Ground — — —
23
(G) Ground Ignition power supply Input Ignition switch ON Battery voltage
24
(V) Ground RX FR Input Ignition switch ON 0 – 5 V
26
(W) — Sensor ground — — —
27
(G) Ground In-vehicle sensor signal Input Ignition switch ON 0 – 4.8 V
Output voltage varies with in-vehi-
cle temperature
28
(P) Ground Intake sensor signal Input Ignition switch ON 0 – 4.8 V
Output voltage varies with front evaporator fin temperature
35
(P) Ground RR DEF feedback Input
Defroster
switch OFF 0 V
ON 12 V
37
(B) — ACTR Ground — — —
40
(G) Ground
ECV (electrical control
valve) control signal Output• Ignition switch ON
• Active test (HVAC test):
MODE 1
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ − Signal name Input/
Output
SJIA1607E
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OPERATION INSPECTIONHAC-49
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
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YES >> GO TO 6.
NO >> Check magnet clutch system. Refer to HAC-87, "Diagnosis Procedure"
.
6.CHECK TEMPERATURE DECREASE
1. Operate the A/C compressor.
2. Operate the temperature control switch (drive r side) and lower the temperature setting to 18°C (60 °F).
3. Check that the cool air blows from the outlets.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Check for insufficient cooling. Refer to HAC-96, "Diagnosis Procedure"
.
7.CHECK TEMPERATURE INCREASE
1. Operate the temperature control switch (drive r side) and raise the temperature setting to 32°C (90 °F) after
warming up the engine.
2. Check that the warm air blows from the outlets.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Check for insufficient heating. Refer to HAC-98, "Diagnosis Procedure"
.
8.CHECK DUAL MODE FUNCTION
1. Press the DUAL mode switch, and then check that “DUAL” is shown on the display.
2. Operate the temperature control switch (driver si de). Check that the discharge air temperature (driver
side) changes.
3. Operate the temperature control switch (passenger side). Check that the discharge air temperature (pas-
senger side) changes.
4. Press the DUAL mode switch, and then check that the temperature setting (driver/passenger) is unified to
the driver side temperature setting.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Refer to HAC-94, "Diagnosis Chart By Symptom"
and perform the appropriate diagnosis.
9.CHECK AUTO MODE
1. Press the AUTO switch, and then check t hat “AUTO” is shown on the display.
2. Operate the temperature control switch (driver side) . Check that the fan speed, outlet air or intake air
changes. The discharge air temperature or fan speed varies depending on the ambient temperature, in-
vehicle temperature, and temperature setting.
Is the inspection result normal?
YES >> Inspection End
NO >> Refer to HAC-94, "Diagnosis Chart By Symptom"
and perform the appropriate diagnosis.
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HAC-50
< BASIC INSPECTION >[AUTOMATIC AIR CONDITIONER]
SYSTEM SETTING
SYSTEM SETTING
Temperature Setting TrimmerINFOID:0000000009463111
Description
If the temperature felt by the customer is different
than the airflow temperature controlled by the temperature
setting, the auto amplifier control temperature can be adjusted to compensate for the temperature setting.
How to set
Using CONSULT, perform “TEMP SET CORRECT” in “WORK SUPPORT” of HVAC.
NOTE:
• When the temperature setting is set to 25.0 °C (77 °F) and −3.0 °C ( −6 °F), the temperature controlled by auto amp is 25.0 °C (77 °F) −
3.0 °C (6 °F) = 22.0 °C (71 °F) and the temperature becomes lower than the temperature setting.
• When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the
difference between the temperature setting and control temperature may be cancelled.
Foot Position Setting TrimmerINFOID:0000000009463112
Description
In the FOOT mode, the air blowing to the DEF can be turned ON/OFF.
How to set
Using CONSULT, perform “BLOW SE T” in “WORK SUPPORT” of HVAC.
NOTE:
When the battery cable is disconnec ted from the negative terminal or when the battery voltage becomes 10V
or less, the setting of the discharge air mix ratio in FOOT mode may be cancelled.
Inlet Port Memory Function (FRE)INFOID:0000000009463113
Description
Work support items Display ( °F) Display ( °C)
TEMP SET CORRECT 63.0
52.5
42.0
31.5
21.0
10.5
0 (initial status) 0 (initial status) −1 −0.5
− 2 −1.0
− 3 −1.5
− 4 −2.0
− 5 −2.5
− 6 −3.0
Work support items Display DEF door position
Auto control Manual control
BLOW SET Mode 1 OPEN CLOSE
Mode 2 (initial status) OPEN OPEN
Mode 3 CLOSE OPEN
Mode 4 CLOSE CLOSE
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SYSTEM SETTINGHAC-51
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
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• If the ignition switch is turned to the OFF position while the FRE ( ) switch is set to ON (fresh air intake),
“Perform the memory” or “Do not perform the memory” of the FRE ( ) switch ON (fresh air intake) con-
dition can be selected.
• If “Perform the memory” was set, the FRE ( ) switch will be ON (fresh air intake) when turning the igni- tion switch to the ON position again.
• If “Do not perform the memory” was set, the air inlets will be controlled automatically when turning the igni- tion switch to the ON position again.
How to set
Using CONSULT, perform “FRE MEMORY SET” in “WORK SUPPORT” of HVAC.
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the
FRE switch memory function may be cancelled.
Inlet Port Memory Function (REC)INFOID:0000000009463114
Description
• If the ignition switch is turned to the OFF position wh ile the REC ( ) switch is set to ON (recirculation),
“Perform the memory” or “Do not perform the memory” of the REC ( ) switch ON (recirculation) condi-
tion can be selected.
• If “Perform the memory” was set, the REC ( ) switch will be ON (recirculation) when turning the ignition
switch to the ON position again.
• If “Do not perform the memory” was set, the air inlets will be controlled automatically when turning the igni-
tion switch to the ON position again.
How to set
Using CONSULT, perform “REC MEMORY SET” in “WORK SUPPORT” of HVAC.
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the
REC switch memory function may be cancelled.
Target Evaporator Temp Upper LimitINFOID:0000000009463115
DESCRIPTION
Set the target evaporator temperature upper limit.
HOW TO SET
With CONSULT
Perform the “TARGET EVAPORATOR TEMP UPPER LI MIT SETTING” of HVAC work support item.
Work support items Display Setting
FRE MEMORY SET WITHOUT Perform the memory of manual FRE
WITH (initial status) Do not perform the memory of manual FRE (auto
control)
Work support items Display Setting
REC MEMORY SET WITHOUT (initial status) Perform the memory of manual REC
WITH Do not perform the memory of manual REC (auto
control)
Work support items Display
TARGET EVAPORATOR TEMP UPPER LIMIT
SETTING Initial Setting
Low
Middle
High
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HAC-52
< BASIC INSPECTION >[AUTOMATIC AIR CONDITIONER]
ADDITIONAL SERVICE WHEN REPLACI
NG CONTROL UNIT (A/C AUTO AMP.)
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (A/C AUTO
AMP.)
DescriptionINFOID:0000000009463116
BEFORE REPLACEMENT
When replacing A/C auto amp., save or print current v ehicle specification with CONSULT configuration before
replacement.
NOTE:
If “Before Replace ECU” cannot be used, use the “After Replace ECU” or “Manual Configuration” after replac-
ing A/C auto amp.
AFTER REPLACEMENT
CAUTION:
• When replacing A/C auto amp., you must perform “After Replace ECU” with CONSULT.
- Complete the procedure of “After Replace ECU” in order.
- If you set incorrect “After Replace ECU”, incidents might occur.
- Configuration is different for each vehicle mode l. Confirm configuration of each vehicle model.
Work ProcedureINFOID:0000000009463117
1.SAVING VEHICLE SPECIFICATION
CONSULT
Enter "Re/Programming, Configuration" and perform “Before Replace ECU” to save or print current vehicle
specification.
NOTE:
If “Before Replace ECU” cannot be used, use the "After Replace ECU" or "Manual Configuration" after replac-
ing A/C auto amp.
>> GO TO 2.
2.REPLACE A/C AUTO AMP.
Replace A/C auto amp. Refer to HAC-102, "Removal and Installation"
.
>> GO TO 3.
3.WRITING VEHICLE SPECIFICATION
CONSULT
1. Enter "Re/Programming, Configuration".
2. If “Before Replace ECU” operation was performed, automatically an "Operation Log Selection" screen will
be displayed. Select the applicable file from the "S aved Data List" and press “Confirm” to write vehicle
specification. Refer to HAC-53, "Work Procedure"
.
3. If “Before Replace ECU” operation was not performed, select "After Replace ECU" or "Manual Configura-
tion" to write vehicle specification. Refer to HAC-53, "Work Procedure"
.
>> GO TO 4.
4.OPERATION CHECK
Check that the operation of the A/C auto amp. is normal.
>> Work End.
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U1000 CAN COMM CIRCUITHAC-55
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000009463121
CAN (Controller Area Network) is a serial communication system for real time application. It is an on-vehicle
multiplex communication system with high data communication speed and excellent error detection ability.
Many electronic control units are equipped onto vehicl es, and each control unit shares information and links
with other control units during operation (not independent ). In CAN communication, control units are con-
nected with two communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission
with less wiring. Each control unit transmits/receives data but selectively reads required data only. Refer to
LAN-32, "CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart"
.
DTC LogicINFOID:0000000009463122
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM SELF-DIAGNOSIS
With CONSULT
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Using CONSULT, perform “SELF- DIAGNOSIS RESULTS” of HVAC.
3. Check if any DTC No. is displayed in the self-diagnosis results.
Is DTC detected?
YES >> Refer to HAC-55, "Diagnosis Procedure".
NO >> Refer to GI-43, "Intermittent Incident"
.
Diagnosis ProcedureINFOID:0000000009463123
1.CHECK CAN COMMUNICATION SYSTEM
Check CAN communication system. Refer to LAN-18, "Trouble Diagnosis Flow Chart"
.
>> Inspection End.
DTC Items
(CONSULT screen terms) DTC detection condition Possible cause
U1000 CAN COMM CIRCUIT When A/C auto amp. is not transmitting
or receiving CAN communication signal
for 2 or more seconds. CAN communication system
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HAC-56
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
DescriptionINFOID:0000000009463124
Initial diagnosis of A/C auto amp.
DTC LogicINFOID:0000000009463125
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM SELF-DIAGNOSIS
With CONSULT
1. Turn ignition switch ON.
2. Using CONSULT, perform “SELF- DIAGNOSIS RESULTS” of HVAC.
3. Check if any DTC No. is displayed in the self-diagnosis results.
Is DTC detected?
YES >> Refer to HAC-56, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000009463126
1.REPLACE A/C AUTO AMP.
Replace A/C auto amp. Refer to HAC-102, "Removal and Installation"
.
>> Inspection End.
DTC Items
(CONSULT screen terms) DTC detection condition Possible cause
U1010 CONTROL UNIT (CAN) When detecting error during the initial diag-
nosis of CAN controller of A/C auto amp. A/C auto amp.
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B2578, B2579 IN-VEHICLE SENSORHAC-57
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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B2578, B2579 IN-VEHICLE SENSOR
DTC LogicINFOID:0000000009463127
DTC DETECTION LOGIC
NOTE:
• If DTC is displayed along with DTC U1000, first per form the trouble diagnosis for DTC U1000. Refer to HAC-
55, "DTC Logic".
• If DTC is displayed along with DTC U1010, first per form the trouble diagnosis for DTC U1010. Refer to HAC-
56, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Turn ignition switch ON.
2. Using CONSULT, perform “SELF- DIAGNOSIS RESULTS” of HVAC.
3. Check if any DTC No. is displayed in the self-diagnosis results.
Is DTC detected?
YES >> Refer to HAC-57, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000009463128
Regarding Wiring Diagram information, refer to HAC-34, "Wiring Diagram".
1.CHECK IN-VEHICLE SENSOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect in-vehicle sensor connector.
3. Turn ignition switch ON.
4. Check voltage between in-vehicle sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK IN-VEHICLE SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between front in-vehicle sensor harness connector and ground.
DTC Items
(CONSULT screen terms) DTC detection condition Possible cause
B2578 IN-VEHICLE SENSOR The in-vehicle sensor recognition temperature
is too high. • In-vehicle sensor
• A/C auto amp.
• Harness or connectors (The sensor circuit is open or short-
ed.)
B2579
The in-vehicle sensor recognition temperature
is too low.
+
−Vol tag e
(Approx.)
In-vehicle sensor
Connector Terminal M34 1 Ground 5 V
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HAC-60
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
B257B, B257C AMBIENT SENSOR
B257B, B257C AMBIENT SENSOR
DTC LogicINFOID:0000000009463130
DTC DETECTION LOGIC
NOTE:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to HAC-
55, "DTC Logic".
• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to HAC-
56, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Turn ignition switch ON.
2. Using CONSULT, perform “SELF- DIAGNOSIS RESULTS” of HVAC.
3. Check if any DTC No. is displayed in the self-diagnosis results.
Is DTC detected?
YES >> Refer to HAC-60, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000009463131
Regarding Wiring Diagram information, refer to HAC-34, "Wiring Diagram".
1.CHECK AMBIENT SENSOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect ambient sensor connector.
3. Turn ignition switch ON.
4. Check voltage between ambient sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK AMBIENT SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between ambient sensor harness connector and ground.
DTCItems
(CONSULT screen terms) DTC detection condition Possible cause
B257B AMBIENT SENSOR The ambient sensor recognition temperature is
too high. • Ambient sensor
• A/C auto amp.
• Harness or connectors (The sensor circuit is open or short-
ed.)
B257C
The ambient sensor recognition temperature is
too low.
+
−Voltage
(Approx.)
Ambient sensor
Connector Terminal E211 1 Ground 5 V
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