2007 NISSAN TIIDA Engine Control

EC-620
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
HO2S2 HEATER
HO2S2 HEATER
DescriptionINFOID:0000000001697503
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed,
amount of intake air and engine coolant temperature.
OPERATION
Component Function CheckINFOID:0000000001697504
1.CHECK HEATED OXYGEN SENSOR 2 HRATER FUNCTION
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and let it idle.
4. Check the voltage between ECM harness connector and ground under the following condition.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-620, "
Diagnosis Procedure"
Diagnosis ProcedureINFOID:0000000001697505
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E21. Refer to Ground Inspection in GI-58, "
Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2.
Sensor Input signal to ECM ECM function Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)Engine speed
Heated oxygen sensor 2
heater controlHeated oxygen sensor 2 heater
Engine coolant temperature sensor Engine coolant temperature
Mass air flow sensor Amount of intake air
Engine speed rpm Heated oxygen sensor 2 heater
Above 3,900OFF
Below 3,900 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 loadON
ECM
Ground Condition Voltage signal
Connector Terminal
F75
(HO2S2 heater signal)GroundAt idleApprox. 10V
Engine speed: Above 3,900 rpmBATTERY VOLTAGE
(11 - 14V)
JMBIA0325GB

EC-632
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR
DescriptionINFOID:0000000001693449
The refrigerant pressure sensor is installed at the condenser of the air conditioner system. The sensor uses an
electrostatic volume pressure transducer to convert refrigerant pressure to voltage. The voltage signal is sent
to ECM, and ECM controls cooling fan system.
Component Function CheckINFOID:0000000001693450
1.CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower fan switch ON.
3. Check the voltage between ECM harness connector terminals as follows.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-632, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001693451
1.CHECK GROUND CONNECTION
1. Turn A/C switch and blower fan switch OFF.
2. Stop engine.
3. Turn ignition switch OFF.
4. Check ground connection E15. Refer to Ground Inspection in GI-58, "
Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect refrigerant pressure sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between refrigerant pressure sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
PBIB2657E
(+) (–)
Voltage
Connector Terminal Connector Terminal
F1141
(Refrigerant pressure sensor signal)F11 48 1.0 - 4.0V
Refrigerant pressure sensor
Ground Voltage
Connector Terminal
E17 3 Ground Approx. 5V

EC-634
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
VSS
VSS
DescriptionINFOID:0000000001697511
The vehicle speed signal is sent to the combination meter from the “ABS actuator and electric unit (control
unit)” by CAN communication line. The combination meter then sends a signal to the ECM by CAN communi-
cation line.
Diagnosis ProcedureINFOID:0000000001697512
1.INSPECTION START
Do you have CONSULT-III?
Do you have CONSULT-III?
YES >> GO TO 2.
NO >> GO TO 3.
2.PERFORM COMPONENT FUNCTION CHECK
1. Turn ignition switch OFF.
2. Lift up the vehicle.
3. Start engine and let it idle.
4. Select “VHCL SPEED SE” in “DATA MONITOR” mode with CONSULT-III.
5. Select “VHCL SPEED SE” indication whe n rotating wheels with suitable gear position.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 3.
3.CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
Refer to BRC-25, "
CONSULT-III Function (ABS)" (with ABS) or BRC-105, "CONSULT-III Function (ABS)" (with
ESP/TCS/ABS).
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace.
4.CHECK COMBINATION METER FUNCTION
Refer to MWI-25, "
DTC Logic".
>> INSPECTION END “VHCL SPEED SE” indication should
exceed 10 km/h (6 MPH).

EC-638
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
ECM
*: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ from
ECM terminals voltage signal.
TERMINAL LAYOUT
PHYSICAL VALUES
NOTE:
 ECM is located in the engine room left side near battery.
 Specification data are reference values and are measured between each terminal and ground.
 Pulse signal is measured by CONSULT-III.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.
CRUISE LAMP  Ignition switch: ONMAIN switch: Pressed at the 1st time →
at the 2nd timeON → OFF
SET LAMP MAIN switch: ON
 When vehicle speed: Between 40
km/h (25 MPH) and 153 km/h (95
MPH)ASCD: Operating ON
ASCD: Not operating OFF Monitor Item Condition Values/Status
PBIA9221J
Te r m i n a l N o .
Wire
colorDescription
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
Output
1GroundL/WThrottle control motor
(Open)Output[Ignition switch: ON]
 Engine stopped
 Shift lever: D (A/T) or 1st (M/
T)
 Accelerator pedal: Fully de-
pressed3.2V
2GroundR/YThrottle control motor relay
power supplyInput [Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
3GroundLG/RHeated oxygen sensor 1
heaterOutput[Engine is running]
 Warm up condition
 Engine speed: Below 3,600
rpmApproximately 3.2V
[Engine is running]
 Warm-up condition
 Idle speed
[Engine is running]
 Engine speed: Above 3,600
rpmBATTERY VOLTAGE (11 - 14V)
PBIA8150J
PBIA8148J

ECM
EC-639
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
4GroundPThrottle control motor
(Close)Output[Ignition switch: ON]
 Engine stopped
 Shift lever: D (A/T) or 1st (M/
T)
 Accelerator pedal: Fully re-
leased0 - 14V
5GroundRHeated oxygen sensor 2
heaterOutput[Engine is running]
 Engine speed: Below 3,900
rpm after the following con-
ditions 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 load10V
[Ignition switch: ON]
 Engine stopped
[Engine is running]
 Engine speed: Above 3,900
rpmBATTERY VOLTAGE
(11 - 14V)
9GroundW/BEVAP canister purge volume
control solenoid valveOutput[Engine is running]
 Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
 Engine speed: About 2,000
rpm (More than 100 sec-
onds after starting engine.)BATTERY VOLTAGE
(11 - 14V)
10
11GroundB
B/WECM ground —[Engine is running]
 Idle speedBody ground
15 Ground G/L Throttle control motor relay Output[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON] 0 - 1.0V Terminal No.
Wire
colorDescription
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
Output
PBIA8149J
PBIA8148J
PBIB0050E
PBIB0520E

ECM
EC-643
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
65 Ground GCamshaft position sensor
(PHASE)Input[Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle0 - 1.0V
[Engine is running]
 Engine speed is 2,000 rpm0 - 1.0V
69 Ground W/B Neutral position switch Input[Ignition switch: ON]
 Shift lever: P or N (A/T),
Neutral (M/T)BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]
 Shift lever: Except above
position0V
72 Ground V/RSensor power supply
(Throttle position sensor)— [Ignition switch: ON] 5V
73 Ground Y/RIntake valve timing control
solenoid valveOutput[Engine is running]
 Warm-up condition
 Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000rpm7 - 10V
74 Ground Y/WSensor power supply
(Refrigerant pressure sen-
sor)— [Ignition switch: ON] 5V
75 Ground L/WSensor power supply
[Crankshaft position sensor
(POS)]— [Ignition switch: ON] 5V
78 Ground Y/VSensor power supply
[Camshaft position sensor
(PHASE)]— [Ignition switch: ON] 5V
83 Ground P CAN communication lineInput/
Output——
84 Ground L CAN communication lineInput/
Output——
88 Ground O Data link connectorInput/
Output[Ignition switch: ON]
 CONSULT-III or GST: Dis-
connected2.7V Terminal No.
Wire
colorDescription
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
OutputMBIB1455E
MBIB1456E
PBIA4937J

EC-646
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
ECM
Wiring Diagram - ENGINE CONTROL SYSTEM -
INFOID:0000000001693500
ALBWA0175GB

EC-666
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
ECM
DTC RELATED ITEM
Engine operating condi-
tion in fail-safe modeDetected items RemarksReference
page
Engine speed will not
rise more than 2,500 rpm
due to the fuel cutMalfunction indicator
lamp circuitWhen there is an open circuit on MI circuit, the ECM cannot warn the
driver by lighting up MI when there is malfunction on engine control
system.
Therefore, when electrical controlled throttle and part of ECM related
diagnoses are continuously detected as NG for 5 trips, ECM warns the
driver that engine control system malfunctions and MI circuit is open by
means of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MI
circuit are detected and demands the driver to repair the malfunction.EC-630
DTC No. Detected items Engine operating condition in fail-safe mode
P0011 Intake valve timing control The signal is not energized to the intake valve timing control solenoid valve and the valve
control does not function.
P0102
P0103Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118Engine coolant tempera-
ture sensor circuitEngine coolant temperature will be determined by ECM based on the time after turning
ignition switch ON or START.
CONSULT-III displays the engine coolant temperature decided by ECM.
ConditionEngine coolant temperature decided
(CONSULT-III display)
Just as ignition switch is turned ON
or START40°C (104°F)
More than approx. 4 minutes after
ignition ON or START80°C (176°F)
Except as shown above40 - 80°C (104 - 176°F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
P0122
P0123
P0222
P0223
P2135Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
So, the acceleration will be poor.
P0605 ECM (When ECM calculation function is malfunctioning:)
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
ECM deactivates ASCD operation.
P1121 Electric throttle control ac-
tuator(When electric throttle control actuator does not function properly due to the return spring
malfunction:)
ECM controls the electric throttle actuator by regulating the throttle opening around the
idle position. The engine speed will not rise more than 2,000 rpm.
(When throttle valve opening angle in fail-safe mode is not in specified range:)
ECM controls the electric throttle control actuator by regulating the throttle opening to 20
degrees or less.
(When ECM detects the throttle valve is stuck open:)
While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops, the
engine stalls.
The engine can restart in P or N (A/T), Neutral (M/T) position, and engine speed will not
exceed 1,000 rpm or more.
P1122 Electric throttle control
functionECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1124
P1126Throttle control motor relay ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.