2007 NISSAN TIIDA sensor

DIAGNOSIS SYSTEM (ECM)
EC-465
< FUNCTION DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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×: Applicable
Monitored item Unit Description Remarks
ENG SPEED rpm Indicates the engine speed computed from the
signal of the crankshaft position sensor (POS)
and camshaft position sensor (PHASE). Accuracy becomes poor if engine
speed drops below the idle rpm.
 If the signal is interrupted while the
engine is running, an abnormal value
may be indicated.
MAS A/F SE-B1 V The signal voltage of the mass air flow sensor is
displayed. When the engine is stopped, a certain
value is indicated.
 When engine is running specification
range is indicated in “SPEC”.
B/FUEL SCHDL msec “Base fuel schedule” indicates the fuel injection
pulse width programmed into ECM, prior to any
learned on board correction. When engine is running specification
range is indicated in “SPEC”.
A/F ALPHA-B1 % The mean value of the air-fuel ratio feedback cor-
rection factor per cycle is indicated. When the engine is stopped, a certain
value is indicated.
 When engine is running specification
range is indicated in “SPEC”.
 This data also includes the data for
the air-fuel ratio learning control.
COOLAN TEMP/S°C or °F The engine coolant temperature (determined by
the signal voltage of the engine coolant tempera-
ture sensor) is displayed. When the engine coolant temperature
sensor is open or short-circuited,
ECM enters fail-safe mode. The en-
gine coolant temperature determined
by the ECM is displayed.
HO2S1 (B1) V The signal of the heated oxygen sensor 1 is dis-
played.
HO2S2 (B1) V The signal voltage of the heated oxygen sensor 2
is displayed.
HO2S1 MNTR(B1) RICH/LEAN Display of heated oxygen sensor 1 signal during
air-fuel ratio feedback control:
RICH: means the mixture became ″rich″, and
control is being affected toward a leaner mixture.
LEAN: means the mixture became ″lean″, and
control is being affected toward a rich mixture. After turning ON the ignition switch,
″RICH″ is displayed until air-fuel mix-
ture ratio feedback control begins.
 When the air-fuel ratio feedback is
clamped, the value just before the
clamping is displayed continuously.
HO2S2 MNTR(B1) RICH/LEAN Display of heated oxygen sensor 2 signal:
RICH: means the amount of oxygen after three
way catalyst is relatively small.
LEAN: means the amount of oxygen after three
way catalyst is relatively large. When the engine is stopped, a certain
value is indicated.
VHCL SPEED SE km/h or mph The vehicle speed computed from the vehicle
speed signal sent from combination meter is dis-
played.
BATTERY VOLT V  The power supply voltage of ECM is displayed.
ACCEL SEN 1
V The accelerator pedal position sensor signal volt-
age is displayed. ACCEL SEN 2 signal is converted by
ECM internally. Thus, it differs from
ECM terminal voltage signal. ACCEL SEN 2
TP SEN 1-B1
V The throttle position sensor signal voltage is dis-
played. TP SEN 2-B1 signal is converted by
ECM internally. Thus, it differs from
ECM terminal voltage signal. TP SEN 2-B1
INT/A TEMP SE°C or
°F The intake air temperature (determined by the
signal voltage of the intake air temperature sen-
sor) is indicated.
START SIGNAL ON/OFF Indicates start signal status [ON/OFF] computed
by the ECM according to the signals of engine
speed and battery voltage. After starting the engine, [OFF] is dis-
played regardless of the starter sig-
nal.
CLSD THL POS ON/OFF Indicates idle position [ON/OFF] computed by
ECM according to the accelerator pedal position
sensor signal.

EC-466
< FUNCTION DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
DIAGNOSIS SYSTEM (ECM)
AIR COND SIG ON/OFF Indicates [ON/OFF] condition of the air condition-
er switch as determined by the air conditioner sig-
nal.
P/N POSI SW ON/OFF Indicates [ON/OFF] condition from the park/neu-
tral position (PNP) switch signal.
PW/ST SIGNAL ON/OFF [ON/OFF] condition of the power steering system
(determined by the signal sent from EPS control
unit) is indicated.
LOAD SIGNAL ON/OFF Indicates [ON/OFF] condition from the electrical
load signal.
ON: Rear window defogger switch is ON and/or
lighting switch is in 2nd position.
OFF: Both rear window defogger switch and light-
ing switch are OFF.
IGNITION SW ON/OFF Indicates [ON/OFF] condition from ignition switch
signal.
CLUTCH P/P SW ON/OFF Indicates [ON/OFF] condition from the clutch
switch signal.
HEATER FAN SW ON/OFF Indicates [ON/OFF] condition from the heater fan
switch signal.
BRAKE SW ON/OFF Indicates [ON/OFF] condition from the stop lamp
switch signal.
INJ PULSE-B1 msec Indicates the actual fuel injection pulse width
compensated by ECM according to the input sig-
nals. When the engine is stopped, a certain
computed value is indicated.
IGN TIMING BTDC Indicates the ignition timing computed by ECM
according to the input signals. When the engine is stopped, a certain
value is indicated.
PURG VOL C/V % Indicates the EVAP canister purge volume con-
trol solenoid valve control value computed by the
ECM according to the input signals.
 The opening becomes larger as the value in-
creases.
INT/V TIM (B1)°CA Indicates [°CA] of intake camshaft advance an-
gle.
INT/V SOL-B1
% The control value of the intake valve timing con-
trol solenoid valve (determined by ECM accord-
ing to the input signals) is indicated.
 The advance angle becomes larger as the value
increases.
AIR COND RLY ON/OFF The air conditioner relay control condition (deter-
mined by ECM according to the input signals) is
indicated.
FUEL PUMP RLY ON/OFF Indicates the fuel pump relay control condition
determined by ECM according to the input sig-
nals.
THRTL RELAY ON/OFF Indicates the throttle control motor relay control
condition determined by the ECM according to
the input signals.
COOLING FAN HI/LOW/OFF Indicates the condition of the cooling fan (deter-
mined by ECM according to the input signals).
HI: High speed operation
LOW: Low speed operation
OFF: Stop
HO2S1 HTR (B1) ON/OFF Indicates [ON/OFF] condition of heated oxygen
sensor 1 heater determined by ECM according to
the input signals. Monitored item Unit Description Remarks

DIAGNOSIS SYSTEM (ECM)
EC-467
< FUNCTION DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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HO2S2 HTR (B1) ON/OFF Indicates [ON/OFF] condition of heated oxygen
sensor 2 heater determined by ECM according to
the input signals.
I/P PULLY SPD rpm Indicates the engine speed computed from the
turbine revolution sensor signal.
VEHICLE SPEED km/h or mph Indicates the vehicle speed computed from the
vehicle speed signal sent from TCM is displayed.
IDL A/V LEARN YET/CMPLT Display the condition of Idle Air Volume Learning
YET: Idle air volume learning has not been per-
formed yet.
CMPLT: Idle air volume learning has already
been performed successfully.
TRVL AFTER MIL km or mile  Distance traveled while MI is activated.
O2 SEN HTR DTY % Heated oxygen sensor 1 heater control value
computed by ECM according to the input signals.
 The current flow to the heater becomes larger as
the value increases.
AC PRESS SEN V The signal voltage from the refrigerant pressure
sensor is displayed.
VHCL SPEED SE km/h or mph The vehicle speed computed from the vehicle
speed signal sent from combination meter is dis-
played.
SET VHCL SPD km/h or mph  The preset vehicle speed is displayed.
MAIN SW ON/OFF Indicates [ON/OFF] condition from MAIN switch
signal.
CANCEL SW ON/OFF Indicates [ON/OFF] condition from CANCEL
switch signal.
RESUME/ACC SW ON/OFF Indicates [ON/OFF] condition from RESUME/AC-
CELERATE switch signal.
SET SW ON/OFF Indicates [ON/OFF] condition from SET/COAST
switch signal.
BRAKE SW1 ON/OFF Indicates [ON/OFF] condition from ASCD brake
switch or ASCD clutch switch signal.
BRAKE SW2 ON/OFF Indicates [ON/OFF] condition of stop lamp switch
signal.
VHCL SPD CUT NON/CUT Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the ASCD
set speed.
CUT: Vehicle speed decreased to excessively
low compared with the ASCD set speed, and
ASCD operation is cut off.
LO SPEED CUT NON/CUT Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the ASCD
set speed.
CUT: Vehicle speed decreased to excessively
low, and ASCD operation is cut off.
AT O D M O N I TO R O N / O F F Indicates the [ON/OFF] condition of A/T O/D ac-
cording to the input signal from the TCM.
AT OD CANCEL ON/OFF Indicates the [ON/OFF] condition of A/T O/D can-
cel to the input signal from the TCM.
CRUISE LAMP ON/OFF Indicates [ON/OFF] condition of CRUISE lamp
determined by the ECM according to the input
signals.
SET LAMP ON/OFF Indicates [ON/OFF] condition of SET lamp deter-
mined by the ECM according to the input signals. Monitored item Unit Description Remarks

EC-468
< FUNCTION DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
DIAGNOSIS SYSTEM (ECM)
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
Test Item
*: Leaving cooling fan OFF with CONSULT-III while engine is running may cause the engine to overheat.TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
FUEL INJECTION Engine: Return to the original
trouble condition
 Change the amount of fuel injec-
tion using CONSULT-III.If trouble symptom disappears, see
CHECK ITEM. Harness and connectors
 Fuel injector
 Heated oxygen sensor 1
IGNITION TIMING Engine: Return to the original
trouble condition
 Timing light: Set
 Retard the ignition timing using
CONSULT-III.If trouble symptom disappears, see
CHECK ITEM. Perform Idle Air Volume Learn-
ing.
POWER BALANCE Engine: After warming up, idle the
engine.
 A/C switch OFF
 Shift lever: P or N (A/T), Neutral
(M/T)
 Cut off each fuel injector signal
one at a time using CONSULT-III.Engine runs rough or dies. Harness and connectors
 Compression
 Fuel injector
 Power transistor
 Spark plug
 Ignition coil
COOLING FAN* Ignition switch: ON
 Turn the cooling fan “LOW”, “HI”
and “OFF” CONSULT-III.Cooling fan moves and stops. Harness and connectors
 IPDM E/R (Cooling fan relay)
 Cooling fan motor
ENG COOLANT
TEMP Engine: Return to the original
trouble condition
 Change the engine coolant tem-
perature using CONSULT-III.If trouble symptom disappears, see
CHECK ITEM. Harness and connectors
 Engine coolant temperature
sensor
 Fuel injector
FUEL PUMP RELAY Ignition switch: ON (Engine
stopped)
 Turn the fuel pump relay “ON”
and “OFF” using CONSULT-III
and listen to operating sound.Fuel pump relay makes the operat-
ing sound. Harness and connectors
 Fuel pump relay
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-III.Engine speed changes according
to the opening percent. Harness and connectors
 Solenoid valve
V/T ASSIGN ANGLE Engine: Return to the original
trouble condition
 Change intake valve timing using
CONSULT-III.If trouble symptom disappears, see
CHECK ITEM. Harness and connectors
 Intake valve timing control sole-
noid valve

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-469
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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COMPONENT DIAGNOSIS
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
DescriptionINFOID:0000000001693221
The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” of “DATA MONI-
TOR” mode of CONSULT-III during normal operation of the Engine Control System. When the value in “SPEC”
of “DATA MONITOR” mode is within the SP value, the Engine Control System is confirmed OK. When the
value in “SPEC” of “DATA MONITOR” mode is NOT within the SP value, the Engine Control System may have
one or more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the
MI.
The SP value will be displayed for the following three items:
 B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correc-
tion)
 A/F ALPHA-B1 (The mean value of air-fuel ratio feedback correction factor per cycle)
 MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Component Function CheckINFOID:0000000001693222
1.START
Make sure that all of the following conditions are satisfied.
 Vehicle driven distance: More than 5,000 km (3,107 miles)
 Barometric pressure: 98.3 - 104.3 kPa (0.983 - 1.043 bar, 1.003 - 1.064 kg/cm
2, 14.25 - 15.12 psi)
 Atmospheric temperature: 20 - 30°C (68 - 86°F)
 Engine coolant temperature: 75 - 95°C (167 - 203°F)
 Transmission: Warmed-up
- A/T models: After the engine is warmed up to normal operating temperature, drive vehicle until “FLUID
TEMP SE” fluid temperature sensor signal) indicates more than 60°C (140°F).
- M/T models: After the engine is warmed up to normal operating temperature, drive vehicle for 5 minutes.
 Electrical load: Not applied*
 Engine speed: Idle
*: Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight
ahead.
>> GO TO 2.
2.PERFORM “SPEC” OF “DATA MONITOR” MODE
With CONSULT-III
NOTE:
Perform “SPEC” in “DATA MONITOR” mode in maximum scale display.
1. Perform EC-385, "
BASIC INSPECTION : Special Repair Requirement".
2. Select “B/FUEL SCHDL”, “A/F ALPHA-B1” and “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode
with CONSULT-III.
3. Make sure that monitor items are within the SP value.
Is the inspection result normal?
YES >> END
NO >> Go to EC-470, "
Diagnosis Procedure".

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-473
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1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within
the SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> GO TO 9.
9.PERFORM POWER BALANCE TEST
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode.
2. Make sure that the each cylinder produces a momentary engine speed drop.
Is the inspection result normal?
YES >> GO TO 12.
NO >> GO TO 10.
10.DETECT MALFUNCTIONING PART
Check the following.
1. Ignition coil and its circuit (Refer to EC-625, "
Component Function Check".)
2. Fuel injector and its circuit (Refer to EC-602, "
Component Function Check".)
3. Intake air leakage
4. Low compression pressure (Refer to EM-24, "
Inspection".)
Is the inspection result normal?
YES >> Replace fuel injector and then GO TO 11.
NO >> Repair or replace malfunctioning part and then GO TO 11.
11 .CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within
the SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> GO TO 12.
12.CHECK HEATED OXYGEN SENSOR 1 FUNCTION
1. Run engine at about 2,000 rpm for about 2minutes under no load.
2. Select “HO2S MNTR (B1)”, in “DATA MONITOR” mode.
3. Running engine at 2,000 rpm under no load (The engine is warmed up to normal operating temperature.),
check that the monitor fluctuates between LEAN and RICH more than 5 times during 10 seconds.
Is the inspection result more than 5 times during 10 seconds?
YES >> GO TO 15.
NO >> GO TO 13.
13.CHECK HEATED OXYGEN SENSOR 1 CIRCUIT
Check heated oxygen sensor 1 and its circuit, refer to.
>> GO TO 14.
14.CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within
the SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> GO TO 15.1 time : RICH → LEAN → RICH
2 times : RICH → LEAN → RICH → LEAN → RICH

EC-474
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
15.DISCONNECT AND RECONNECT ECM HARNESS CONNECTOR
1. Stop the engine.
2. Disconnect ECM harness connector. Check pin terminal and connector for damage, and then reconnect it.
>> GO TO 16.
16.CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within
the SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> Detect malfunctioning part according to EC-670, "
Symptom Table".
17.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO-1 >> More than the SP value: GO TO 18.
NO-2 >> Less than the SP value: GO TO 25.
18.DETECT MALFUNCTIONING PART
1. Check for the cause of large engine friction. Refer to the following.
- Engine oil level is too high
- Engine oil viscosity
- Belt tension of alternator, A/C compressor, etc. is excessive
- Noise from engine
- Noise from transmission, etc.
2. Check for the cause of insufficient combustion. Refer to the following.
- Valve clearance malfunction
- Intake valve timing control function malfunction
- Camshaft sprocket installation malfunction, etc.
>> Repair or replace malfunctioning part, and then GO TO 30.
19.CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
 Crushed air ducts
 Malfunctioning seal of air cleaner element
 Uneven dirt of air cleaner element
 Improper specification of intake air system
Is the inspection result normal?
YES >> GO TO 21.
NO >> Repair or replace malfunctioning part, and then GO TO 20.
20.CHECK “A/F ALPHA-B1”, AND “B/FUEL SCHDL”
Select “A/F ALPHA-B1” and “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the
each indication is within the SP value.
Is the measurement value within the SP value?
YES >>INSPECTION END
NO >> “B/FUEL SCHDL” is more, “A/F ALPHA-B1” is less than the SP value: GO TO 21.
21.DISCONNECT AND RECONNECT MASS AIR FLOW SENSOR HARNESS CONNECTOR
1. Stop the engine.
2. Disconnect mass air flow sensor harness connector. Check pin terminal and connector for damage and
then reconnect it again.

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-475
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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>> GO TO 22.
22.CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within
the SP value.
Is the measurement value within the SP value?
YES >> Detect malfunctioning part of mass air flow sensor circuit and repair it. Refer to EC-487, "DTC
Logic". Then GO TO 29.
NO >> GO TO 23.
23.CHECK “MAS A/F SE-B1”
Select “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
Is the measurement value within the SP value?
YES >> GO TO 24.
NO >> More than the SP value: Replace mass air flow sensor, and then GO TO 29.
24.REPLACE ECM
1. Replace ECM.
2. Go to EC-388, "
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment".
>> GO TO 29.
25.CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
 Crushed air ducts
 Malfunctioning seal of air cleaner element
 Uneven dirt of air cleaner element
 Improper specification of intake air system
Is the inspection result normal?
YES >> GO TO 27.
NO >> Repair or replace malfunctioning part, and then GO TO 26.
26.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> Less than the SP value: GO TO 27.
27.CHECK “MAS A/F SE-B1”
Select “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
Is the measurement value within the SP value?
YES >> GO TO 28.
NO >> Less than the SP value: Replace mass air flow sensor, and then GO TO 30.
28.CHECK INTAKE SYSTEM
Check for the cause of air leak after the mass air flow sensor. Refer to the following.
 Disconnection, looseness, and cracks in air duct
 Looseness of oil filler cap
 Disconnection of oil level gauge
 Open stuck, breakage, hose disconnection, or cracks of PCV valve
 Disconnection or cracks of EVAP purge hose, open stuck of EVAP canister purge volume control solenoid
valve