2014 NISSAN TEANA ECU

DIAGNOSIS SYSTEM (ECM)EC-609
< SYSTEM DESCRIPTION > [VQ35DE]
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*: The item is indicated, but not used.
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
WORK SUPPORT MODE
Work Item
A/F SEN1 DIAG3(B1)ABSNT/
PRSNT Indicates DTC P014C, P014D,
P015A or P015B self-diagnosis con-
dition.
• ABSNT: The vehicle condition is not within the diagnosis range.
• PRSNT: The vehicle condition is within the diagnosis range.
HO2 S2 DIAG2(B2) INCMP/
CMPLT Indicates DTC P0139 self-diagnosis
(slow responce ) condition.
• INCMP: Self-diagnosis is incom- plete.
• CMPLT: Self-diagnosis is com-
plete.
HO2 S2 DIAG2(B1) INCMP/
CMPLT Indicates DTC P0139 self-diagnosis
(slow responce ) condition.
• INCMP: Self-diagnosis is incom-
plete.
• CMPLT: Self-diagnosis is com- plete.
EOP SENSOR mV The signal voltage of EOP sensor is
displayed.
HO2 S2 DIAG1(B1) INCMP/
CMPLT Indicates DTC P0139 self-diagnosis
(delayed responce) condition.
• INCMP: Self-diagnosis is incom-
plete.
• CMPLT: Self-diagnosis is com- plete.
A/F-S ATMSPHRC
CRCT B1 — Displays a determined value of at-
mospheric correction factor neces-
sary for correcting an A/F sensor
signal input to ECM. The signal used
for the correction is an A/F sensor
signal transmitted while driving un-
der atmospheric pressure.
A/F-S ATMSPHRC
CRCT B2 — Displays a determined value of at-
mospheric correction factor neces-
sary for correcting an A/F sensor
signal input to ECM. The signal used
for the correction is an A/F sensor
signal transmitted while driving un-
der atmospheric pressure.
A/F-S ATMSPHRC
CRCT UP B1 count Displays the number of updates of
the A/F sensor atmospheric correc-
tion factor.
A/F-S ATMSPHRC
CRCT UP B2 count Displays the number of updates of
the A/F sensor atmospheric correc-
tion factor.
Monitored item Unit
Monitor Item Selec-
tion
Description Remarks
ECU IN-
PUT SIG- NALS MAIN-
SIG-
NALS
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-610
< SYSTEM DESCRIPTION >[VQ35DE]
DIAGNOSIS SYSTEM (ECM)
*: This function is not necessary in the usual service procedure.
ACTIVE TEST MODE
Test Item
WORK ITEM CONDITION USAGE
IDLE AIR VOL LEARN The idle air volume that keeps the engine within the specified range is memorized in ecm. When learning the idle air volume
EVAP SYSTEM CLOSE Close the EVAP canister vent control valve in order to make
EVAP system close under the following conditions.
• Ignition switch ON
• Engine not running
• Ambient temperature is above 0 °C (32 °F).
• No vacuum and no high pressure in EVAP system
• Fuel tank temperature is more than 0 °C (32 °F).
• Within 10 minutes after starting “EVAP SYSTEM CLOSE”
• When trying to execute “EVAP SYSTEM CLOSE” under
the condition except above, CONSULT will discontinue it
and display appropriate instruction.
NOTE:
When starting engine, CONSULT may display “BAT-
TERY VOLTAGE IS LOW. CHARGE BATTERY”, even in
using charged battery. When detecting EVAP vapor leak-
age in the EVAP system
FUEL PRESSURE RELEASE Fuel pu mp will stop by touching “START” during idling.
crank a few times after engine stalls. When releasing fuel pressure from
fuel line
SELF-LEARNING CONT The coefficient of self-learning control mixture ratio returns to the original coefficient. When clearing mixture ratio self-
learning value
TARGET IGN TIM ADJ* Idle condition When adjusting target ignition tim- ing
TARGET IDLE RPM ADJ* Idle condition When setting target idle speed
VIN REGISTRATION In this mode, VIN is registered in ECM When registering VIN in ECM
CLSD THL POS LEARN Ignition on and engine stopped. When learning the throttle valve
closed position
SAVING DATA FOR REPLC CPU In this mode, save data that is in ECM. When ECM replaced.
WRITING DATA FOR REPLC CPU In this mode, write data stored by “SAVING DATA FOR RE-
PLC CPU” in work support mode to ECM. When ECM replaced.
TEST ITEM CONDITION JUDGMENT CHECK ITEM (REMEDY)
FUEL INJEC-
TION • Engine: Return to the original
non-standard condition
• Change the amount of fuel injec- tion using CONSULT. If malfunctioning symptom disap-
pears, see CHECK ITEM. • Harness and connectors
• Fuel injector
• Air fuel ratio (A/F) sensor 1
ENG COOLANT
TEMP • Engine: Return to the original
non-standard condition
• Change the engine coolant tem- perature using CONSULT. If malfunctioning symptom disap-
pears, see CHECK ITEM. • Harness and connectors
• Engine coolant temperature sen-
sor
• Fuel injector
PURG VOL
CONT/V • Engine: After warming up, run en-
gine at 1,500 rpm.
• Change the EVAP canister purge volume control solenoid valve
opening percent using CON-
SULT. Engine speed changes according to
the opening percent. • Harness and connectors
• Solenoid valve
FUEL/T TEMP
SEN • Change the fuel tank temperature using CONSULT.
ALTERNATOR
DUTY •Engine: Idle
• Change duty ratio using CON-
SULT. Battery voltage changes.
• Harness and connectors
• IPDM E/R
•Alternator
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ECM
EC-613
< ECU DIAGNOSIS INFORMATION > [VQ35DE]
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ECU DIAGNOSIS INFORMATION
ECM
Reference ValueINFOID:0000000009462542
VALUES ON THE DIAGNOSIS TOOL
NOTE:
• The following table includes information (items) inapplicable to this vehicle. For information (items) applica- ble to this vehicle, refer to CONSULT display items.
• Numerical values in the following table are reference values.
• These values are input/output values that ECM receiv es/transmits and may differ from actual operations.
Example: The ignition timing shown by the timing light may differ from the ignition timing displayed on the
data monitor.
This occurs because the timing light shows a value calculated by ECM according to signals received from
the camshaft position sensor and other sensors related to ignition timing.
• For outlines of following items, refer to EC-601, "CONSULT Function"
.
Monitor Item Condition Values/Status
ENG SPEED Run engine and compare CONSULT value with the tachometer indication.Almost the same speed as
the tachometer indication.
MAS A/F SE-B1 See EC-701, "Description"
.
B/FUEL SCHDL See EC-701, "Description"
.
A/F ALPHA-B1 See EC-701, "Description"
.
A/F ALPHA-B2 See EC-701, "Description"
.
COOLAN TEMP/S Engine: After warming up More than 70 °C (158 °F)
A/F SEN1 (B1) Engine: After warming up Maintaining engine speed at 2,000 rpm Fluctuates around 2.2 V
A/F SEN1 (B2) Engine: After warming up Maintaining engine speed at 2,000 rpm Fluctuates around 2.2 V
HO2S2 (B1) Revving engine from idle to 3,000 rpm quickly after the following conditions are
met.
• Engine: After warming up
• After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load 0 - 0.3 V
←→ Approx. 0.6 -
1.0 V
HO2S2 (B2) Revving engine from idle to 3,000 rpm quickly after the following conditions are
met.
• Engine: After warming up
• After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load 0 - 0.3 V
←→ Approx. 0.6 -
1.0 V
HO2S2 MNTR(B1) Revving engine from idle to 3,000 rpm quickly after the following conditions are
met.
• Engine: After warming up
• After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load LEAN
←→ RICH
HO2S2 MNTR(B2) Revving engine from idle to 3,000 rpm quickly after the following conditions are
met.
• Engine: After warming up
• After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load LEAN
←→ RICH
VHCL SPEED SE Turn drive wheels and compare CONSULT value with the speedometer indica-
tion. Almost the same speed as
speedometer indication
BATTERY VOLT Ignition switch: ON (Engine stopped) 11 - 14 V
ACCEL SEN 1 Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.5 - 1.0 V
Accelerator pedal: Fully depressed 4.2 - 4.8 V
ACCEL SEN 2*
1Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.5 - 1.0 V
Accelerator pedal: Fully depressed 4.2 - 4.8 V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-614
< ECU DIAGNOSIS INFORMATION >[VQ35DE]
ECM
TP SEN 1-B1• Ignition switch: ON
(Engine stopped)
• Selector lever: D position Accelerator pedal: Fully re
leased More than 0.36 V
Accelerator pedal: Fully depressed Less than 4.75 V
TP SEN 2-B1*
1• Ignition switch: ON (Engine stopped)
• Selector lever: D position Accelerator pedal: Fully re
leased More than 0.36 V
Accelerator pedal: Fully depressed Less than 4.75 V
FUEL T/TMP SE Ignition switch: ON Indicates fuel tank tempera-
ture
EVAP SYS PRES Ignition switch: ON Approx. 1.8 - 4.8 V
FUEL LEVEL SE Ignition switch: ON Depending on fuel level of
fuel tank
START SIGNAL Ignition switch: ON → START → ON Off → On → Off
CLSD THL POS Ignition switch: ON
(Engine stopped) Accelerator pedal:
Fully released On
Accelerator pedal: Slightly depressed Off
AIR COND SIG Engine: After warming up, idle the
engine Air conditioner switch: OFF Off
Air conditioner switch: ON
(Compressor operates.) On
PW/ST SIGNAL Engine: After warming up, idle the
engine Steering wheel: Not being turned Off
Steering wheel: Being turned On
LOAD SIGNAL Ignition switch: ON Rear window defogger switch: ON
and/or
Lighting switch: 2nd position On
Rear window defogger switch and lighting
switch: OFF Off
IGNITION SW Ignition switch: ON → OFF → ON On → Off → On
HEATER FAN SW Engine: After warming up, idle the
engine Heater fan switch: ON On
Heater fan switch: OFF Off
BRAKE SW Ignition switch: ON Brake pedal: Fully released Off
Brake pedal: Slightly depressed On
INJ PULSE-B1 • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle 2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec
INJ PULSE-B2 • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle 2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec
IGN TIMING • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle 7 - 17
°BTDC
2,000 rpm 25 - 45 °BTDC
CAL/LD VALUE • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle 5 - 35%
2,500 rpm 5 - 35%
MASS AIRFLOW • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle 2.0 - 6.0 g/s
2,500 rpm 7.0 - 20.0 g/s
PURG VOL C/V • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle
(Accelerator pedal: Not depressed even
slightly, after engine starting.) 0%
2,000 rpm —
Monitor Item Condition Values/Status
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ECM
EC-615
< ECU DIAGNOSIS INFORMATION > [VQ35DE]
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INT/V TIM (B1)
• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle
−5 - 5 °CA
2,000 rpm Approx. 0 - 30 °CA
INT/V TIM (B2) • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle
−5 - 5 °CA
2,000 rpm Approx. 0 - 30 °CA
INT/V SOL(B1) • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle 0 - 2%
2,000 rpm Approx. 0 - 50%
INT/V SOL(B2) • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle 0 - 2%
2,000 rpm Approx. 0 - 50%
VIAS S/V-1 • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load When revving engine up to 5,000 rpm
quickly Off
→On → Off
VIAS S/V-2 • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load When revving engine up to 5,000 rpm
quickly Off
→On → Off
AIR COND RLY Engine: After warming up, idle the
engine Air conditioner switch: OFF Off
Air conditioner switch: ON
(Compressor operates) On
ENGINE MOUNT Engine: After warming up Below 950 rpm IDLE
Above 950 rpm TRVL
FUEL PUMP RLY • For 1 second after turning ignition switch: ON
• Engine running or cranking On
Except above Off
VENT CONT/V Ignition switch: ON Off
THRTL RELAY Ignition switch: ON On
A/F S1 HTR(B1) Engine: After warming up, idle the engine
(More than 140 seconds after starting engine) 4 - 100%
A/F S1 HTR(B2) Engine: After warming up, idle the engine
(More than 140 seconds after starting engine) 4 - 100%
COOLING FAN • Engine: After warming up, idle the
engine
• Air conditioner switch: OFF Engine coolant temperature: 97
°C
(206 °F) or less OFF
Engine coolant temperature: Between
98 °C (208
°F) and 99 °C (210 °F) LOW
Engine coolant temperature: Between
100 °C (212 °F) and 104 °C (219 °F) MID
Engine coolant temperature: 105 °C
(221 °F) or more HI
HO2S2 HTR (B1) Engine speed: Below 3,600 rpm after the following conditions are met.
• Engine: After warming up
• Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load On
Engine speed: Above 3,600 rpm Off
Monitor Item Condition Values/Status
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EC-616
< ECU DIAGNOSIS INFORMATION >[VQ35DE]
ECM
HO2S2 HTR (B2)Engine speed: Below 3,600 rpm after the following conditions are met.
• Engine: After warming up
• Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load On
Engine speed: Above 3,600 rpm Off
ALT DUTY SIG Power generation voltage variable control: Operating On
Power generation voltage variable control: Not operating Off
I/P PULLY SPD Vehicle speed: More than 20 km/h (12 MPH) Almost the same speed as
the tachometer indication
VEHICLE SPEED Turn drive wheels and compare CONSULT value with the speedometer indica-
tion. Almost the same speed as
the speedometer indication
IDL A/V LEARN Engine: Running Idle air volume learning has not been per-
formed yet. YET
Idle air volume learning has already been
performed successfully. CMPLT
TRVL AFTER MIL Ignition switch: ON Vehicle has traveled after MIL has illumi-
nated. 0 - 65,535 km
(0 - 40,723 miles)
ENG OIL TEMP Engine: After warming up More than 70 °C (158 °F)
VHCL SPEED SE Turn drive wheels and compare CONSULT value with the speedometer indica-
tion. Almost the same speed as
the speedometer indication
SET VHCL SPD Engine: Running ASCD: Operating The preset vehicle speed is
displayed
MAIN SW Ignition switch: ON MAIN switch: Pressed On
MAIN switch: Released Off
CANCEL SW Ignition switch: ON CANCEL switch: Pressed On
CANCEL switch: Released Off
RESUME/ACC SW Ignition switch: ON RESUME/ACCELERATE switch:
Pressed On
RESUME/ACCELERATE switch: Re-
leased Off
SET SW Ignition switch: ON SET/COAST switch: Pressed On
SET/COAST switch: Released Off
BRAKE SW1
(Brake pedal posi-
tion switch) Ignition switch: ON Brake pedal: Fully released On
Brake pedal: Slightly depressed Off
BRAKE SW2
(Stop lamp switch) Ignition switch: ON Brake pedal: Fully released Off
Brake pedal: Slightly depressed On
VHCL SPD CUT Ignition switch: ON Non
LO SPEED CUT Ignition switch: ON Non
AT OD MONITOR Ignition switch: ON Off
AT OD CANCEL Ignition switch: ON Off
CRUISE LAMP Ignition switch: ON MAIN switch: Pressed at the 1st time
→
at the 2nd time On
→ Off
SET LAMP • MAIN switch: ON
• When vehicle speed is between 40 km/h (25 MPH) and 144 km/h
(89 MPH) ASCD: Operating On
ASCD: Not operating Off
ALT DUTY Engine: Idle 0 - 80%
Monitor Item Condition Values/Status
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ECM
EC-617
< ECU DIAGNOSIS INFORMATION > [VQ35DE]
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BAT CUR SEN
• Engine speed: Idle
• Battery: Fully charged*
2
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Approx. 2,600 - 3,500 mV
A/F ADJ-B1 Engine: Running −0.330 - 0.330
A/F ADJ-B2 Engine: Running −0.330 - 0.330
P/N POSI SW Ignition switch: ON Selector lever: P or N position On
Selector lever: Except above position Off
INT/A TEMP SE Ignition switch: ON Indicates intake air tempera-
ture
AC PRESS SEN • Engine: Idle
• Both A/C switch and blower fan switch: ON (Compressor operates) 1.0 - 4.0 V
VTC DTY EX B2
*3— —
EVAP LEAK DIAG Ignition switch: ON Indicates the condition of
EVAP leak diagnosis.
EVAP DIAG READY Ignition switch: ON Indicates the ready condition
of EVAP leak diagnosis.
BAT TEMP SEN • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle
Indicates the temperature
around the battery.
THRTL STK CNT
B1
*3— —
HO2 S2 DIAG1(B2) DTC P0159 self-diagnosis (delayed response) has not been performed yet. INCMP
DTC P0159 self-diagnosis (delayed response) has already been performed suc-
cessfully. CMPLT
A/F SEN1 DIAG1
(B2) DTC P015C and P015D self-dia
gnosis is incomplete. INCMP
DTC P015C and P015D self-dia gnosis is complete. CMPLT
A/F SEN1 DIAG1
(B1) DTC P015A and P015B self-diagnosis is incomplete. INCMP
DTC P015A and P015B self-diagnosis is complete. CMPLT
A/F SEN1 DIAG2
(B2) DTC P014E and P014F self-diagnosis is incomplete. INCMP
DTC P014E and P014F self-diagnosis is complete. CMPLT
A/F SEN1 DIAG2
(B1) DTC P014C and P014D self-dia
gnosis is incomplete. INCMP
DTC P014C and P014D self-dia gnosis is complete. CMPLT
A/F SEN1 DIAG3
(B2) The vehicle condition is not within the diagnosis range of DTC P014E, P014F,
P015C or P015D. ABSNT
The vehicle condition is within the diagnosis range of DTC P014E, P014F,
P015C or P015D. PRSNT
A/F SEN1 DIAG3
(B1) The vehicle condition is not within the diagnosis range of DTC P014C, P014D,
P015A or P015B. ABSNT
The vehicle condition is within the diagnosis range of DTC P014C, P014D,
P015A or P015B. PRSNT
HO2 S2 DIAG2(B2) DTC P0159 self-diagnosis (slow response) has not been performed yet. INCMP
DTC P0159 self-diagnosis (slow response) has already been performed suc-
cessfully. CMPLT
HO2 S2 DIAG2(B1) DTC P0139 self-diagnosis (slow response) has not been performed yet. INCMP
DTC P0139 self-diagnosis (slow response) has already been performed suc-
cessfully. CMPLT
Monitor Item Condition Values/Status
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

E C -618
< ECU DIAGNOSIS INFORMATION >[VQ35DE]
ECM
*1: Accelerator pedal position sensor 2 signal and throttle
position sensor 2 signal are converted by ECM inter-
nally. Thus, they differ from ECM terminals voltage signal.
*2: Before measuring the terminal voltage, confir m that the battery is fully charged. Refer to PG-4, "How to
Handle Battery".
*3: The item is indicated, but not used.
TERMINAL LAYOUT
PHYSICAL VALUES
NOTE:
• ECM is located in the engine room left side near battery.
• Specification data are reference values.
• Pulse signal is measured by CONSULT.
EOP SENSOR • Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
•No load Idle Approx. 1,450 mV
2,000 rpm Approx. 2,850 mV
HO2 S2 DIAG1(B1) DTC P0139 self-diagnosis (delayed response) has not been performed yet. INCMP
DTC P0139 self-diagnosis (delayed response) has already been performed suc-
cessfully. CMPLT
A/F-S ATMSPHRC
CRCT B1 Engine: After warming up, idle the engine Varies depending on vehicle
environment.
A/F-S ATMSPHRC
CRCT B2 Engine: After warming up, idle the engine
Varies depending on vehicle
environment.
A/F-S ATMSPHRC
CRCT UP B1 Engine: Running Varies depending on the
number of updates.
A/F-S ATMSPHRC
CRCT UP B2 Engine: Running Varies depending on the
number of updates.
Monitor Item Condition Values/Status
JSBIA0505ZZ
Terminal No. Description
ConditionVa l u e
(Approx.)
+ -– Signal name Input/
Output
1
(R) 128
(GR) Throttle contro
l motor power
supply Input [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14 V)
2
(BG) 128
(GR) Throttle control mo
tor (Close) Output [Ignition switch: ON]
• Engine stopped
• Selector lever: D position
• Accelerator pedal: Fully re-
leased 0 - 14 V
JMBIA1125GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM