ignition NISSAN TEANA 2014 Service Manual

DIAGNOSIS AND REPAIR WORKFLOWHAC-47
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
C
D E
F
G H
J
K L
M A
B
HAC
N
O P
>> GO TO 2.
2.SYMPTOM CHECK
Verify symptoms.
>> GO TO 3.
3.CHECK FOR DTCS
With CONSULT
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.
3. Check DTC.
Is any DTC detected?
YES >> GO TO 4.
NO >> GO TO 5.
4.PERFORM DTC DIAGNOSTIC PROCEDURE
Perform the diagnostic procedure fo r the detected DTC. Refer to HAC-30, "DTC Inspection Priority Chart"
.
>> GO TO 7.
5.OPERATION CHECK
Perform the operation check. Refer to HAC-48, "Work Procedure"
.
>> GO TO 6.
6.SYMPTOM DIAGNOSIS
Check the symptom diagnosis table. Refer to HAC-94, "Diagnosis Chart By Symptom"
.
>> GO TO 8.
7.VERIFY REPAIR.
With CONSULT
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.
3. Check DTC.
Is any DTC detected?
YES >> GO TO 4.
NO >> GO TO 8.
8.PERFORM FINAL OPERATION CHECK
Perform the operation check. Refer to HAC-48, "Work Procedure"
.
Does it operate normally?
YES >> Inspection End.
NO >> GO TO 2.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-48
< BASIC INSPECTION >[AUTOMATIC AIR CONDITIONER]
OPERATION INSPECTION
OPERATION INSPECTION
Work ProcedureINFOID:0000000009463110
DESCRIPTION
The purpose of the operational check is to che
ck that the individual system operates normally.
INSPECTION PROCEDURE
1.CHECK MEMORY FUNCTION
1. Start the engine.
2. Operate the temperature control switch (drive r side) and raise the temperature setting to 32°C (90 °F).
3. Press the OFF switch.
4. Turn the ignition switch OFF.
5. Turn the ignition switch ON.
6. Press the AUTO switch.
7. Check that the temperature setting, before turning the ignition switch OFF, is stored.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check power and ground circuits for A/C auto amp. Refer to HAC-78, "A/C AUTO AMP. : Diagno-
sis Procedure".
2.CHECK BLOWER MOTOR SPEED
1. Operate the fan control dial. Check that the fan speed changes.
2. Check the operation for all fan speeds.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Check blower motor system. Refer to HAC-84, "Diagnosis Procedure"
.
3.CHECK DISCHARGE AIR (MODE SWITCH AND DEF SWITCH)
1. Press the MODE switch and the DEF switch.
2. Check that the air outlets change according to each i ndicated air outlet by placing a hand in front of the
outlets. Refer to HAC-13, "System Description"
.
NOTE:
Confirm that the A/C compressor clutch is engaged (sound or visual inspection) and intake door position is at
FRE ( ) when the D/F ( ) or DEF ( ) is selected.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Check mode door system. Refer to HAC-80, "MODE DOOR MOTOR : Diagnosis Procedure"
.
4.CHECK INTAKE AIR
1. Press the REC ( ) switch. Indicator is turned ON.
2. Press the FRE ( ) switch. Indicator is turned ON.
3. Listen for the intake door position change. (Slight change of blower sound can be heard.)
NOTE:
Confirm that the A/C compressor clutch is engaged (sound or visual inspection) and the FRE ( ) switch is
pressed when the D/F ( ) or DEF ( ) is selected.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Check intake door system. Refer to HAC-81, "INTAKE DOOR MOTOR : Diagnosis Procedure"
.
5.CHECK A/C SWITCH
1. Press the A/C switch.
2. The A/C switch indicator is turned ON.
Confirm that the A/C compressor clutch engages (sound or visual inspection).
Is the inspection result normal?
Conditions : Engine running at normal operating temperature
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

SYSTEM SETTINGHAC-51
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
C
D E
F
G H
J
K L
M A
B
HAC
N
O P
• 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
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

U1000 CAN COMM CIRCUITHAC-55
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
C
D E
F
G H
J
K L
M A
B
HAC
N
O P
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
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

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.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

B2578, B2579 IN-VEHICLE SENSORHAC-57
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
C
D E
F
G H
J
K L
M A
B
HAC
N
O P
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
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-58
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
B2578, B2579 IN-VEHICLE SENSOR
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK IN-VEHICLE SENSOR
Check in-vehicle sensor. Refer to HAC-58, "Component Inspection"
.
Is the inspection result normal?
YES >> Replace A/C auto amp. Refer to HAC-102, "Removal and Installation".
NO >> Replace in-vehicle sensor. Refer to HAC-104, "Removal and Installation"
.
4.CHECK IN-VEHCILE SENSOR POWER SUPPLY CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between in-vehicle sensor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair harness or connector.
5.CHECK IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT FOR GROUND SHORT
Check continuity between in-vehicle sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair harness or connector.
6.CHECK IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT FOR POWER SHORT
1. Turn ignition switch ON.
2. Check voltage between in-vehicle sensor harness connector and ground.
Is the inspection result normal?
YES >> Replace A/C auto amp. Refer to HAC-102, "Removal and Installation".
NO >> Repair harness or connector.
Component InspectionINFOID:0000000009463129
1.CHECK IN-VEHICLE SENSOR
1. Turn ignition switch OFF.
2. Disconnect in-vehicle sensor connector.
In-vehicle sensor —Continuity
Connector Terminal
M34 2 Ground Yes
In-vehicle sensor A/C auto amp. Continuity
Connector Terminal Connector Terminal
M34 1 M152 27 Yes
In-vehicle sensor —Continuity
Connector Terminal
M34 1 Ground No
+ −Voltage
(Approx.)
In-vehicle sensor
Connector Terminal M34 1 Ground 0 V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

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
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

B257B, B257C AMBIENT SENSORHAC-61
< 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 AMBIENT SENSOR
Check ambient sensor. Refer to HAC-61, "Component Inspection"
.
Is the inspection result normal?
YES >> Replace A/C auto amp. Refer to HAC-102, "Removal and Installation".
NO >> Replace ambient sensor. Refer to HAC-103, "Removal and Installation"
.
4.CHECK AMBIENT SENSOR POWER SUPPLY CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp.connector.
3. Check continuity between ambient sensor har ness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair harness or connector.
5.CHECK AMBIENT SENSOR POWER SUPPLY CIRCUIT FOR GROUND SHORT
Check continuity between ambient sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair harness or connector.
6.CHECK AMBIENT SENSOR POWER SU PPLY CIRCUIT FOR POWER SHORT
1. Turn ignition switch ON.
2. Check voltage between ambient sensor harness connector and ground.
Is the inspection result normal?
YES >> Replace A/C auto amp. Refer to HAC-102, "Removal and Installation".
NO >> Repair harness or connector.
Component InspectionINFOID:0000000009463132
1.CHECK AMBIENT SENSOR
1. Turn ignition switch OFF.
2. Disconnect ambient sensor connector.
Ambient sensor —Continuity
Connector Terminal
E211 2 Ground Yes
Ambient sensor A/C auto amp. Continuity
Connector Terminal Connector Terminal
E211 1M1527 Yes
Ambient sensor —Continuity
Connector Terminal
E211 1 Ground No
+ −Vol tag e
(Approx.)
Ambient sensor
Connector Terminal E211 1 Ground 0 V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

B2581, B2582 INTAKE SENSORHAC-63
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
C
D E
F
G H
J
K L
M A
B
HAC
N
O P
B2581, B2582 INTAKE SENSOR
DTC LogicINFOID:0000000009463133
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-63, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000009463134
Regarding Wiring Diagram information, refer to HAC-34, "Wiring Diagram".
1.CHECK INTAKE SENSOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect intake sensor connector.
3. Turn ignition switch ON.
4. Check voltage between intake sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK INTAKE SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between intake sensor harness connector and ground.
DTC Items
(CONSULT screen terms) DTC detection condition Possible cause
B2581 INTAKE SENSOR The intake sensor recognition temperature is
too high. • Intake sensor
• A/C auto amp.
• Harness or connectors (The sensor circuit is open or short-
ed.)
B2582
The intake sensor recognition temperature is
too low.
+
−Vol tag e
(Approx.)
Intake sensor
Connector Terminal M69 1 Ground 5 V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM