2007 NISSAN TIIDA Engine Control

ECM
EC-667
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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DTC Inspection Priority ChartINFOID:0000000001693502
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000001693503
×:Applicable —: Not applicable
P1128 Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1229 Sensor power supply ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1805 Brake switch ECM controls the electric throttle control actuator by regulating the throttle opening to a
small range.
Therefore, acceleration will be poor.
Vehicle condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration
P2122
P2123
P2127
P2128
P2138Accelerator pedal position
sensorThe 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. DTC No. Detected items Engine operating condition in fail-safe mode
Priority Detected items (DTC)
1  U1000 U1001 CAN communication line
 U1010 CAN communication
 P0102 P0103 Mass air flow sensor
 P0117 P0118 Engine coolant temperature sensor
 P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor
 P0327 P0328 Knock sensor
 P0335 Crankshaft position sensor (POS)
 P0340 Camshaft position sensor (PHASE)
 P0605 ECM
 P1229 Sensor power supply
 P1610 - P1615 NATS
 P1706 Park/neutral position (PNP) switch
 P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
2  P0132 P0134 Heated oxygen sensor 1
 P0138 Heated oxygen sensor 2
 P1065 ECM
 P 1111 I n t a k e v a l v e t i m i n g c o n t r o l s o l e n o i d v a l v e
 P1122 Electric throttle control function
 P1124 P1126 Throttle control motor relay
 P1128 Throttle control motor
 P1217 Engine over temperature (OVERHEAT)
 P1805 Brake switch
 P1564 ASCD steering switch
 P1572 ASCD brake switch
 P1574 ASCD vehicle speed sensor
3  P0011 Intake valve timing control
 P1121 Electric throttle control actuator
 P1212 ESP communication line
DTC*1Items
(CONSULT-III screen terms)Trip MI Reference page
CONSULT-III
ECM*
2
U1000
1000*3CAN COMM CIRCUIT 2 —EC-481
U1001
1001*3CAN COMM CIRCUIT 2 —EC-481

ECM
EC-669
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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*1: 1st trip DTC No. is the same as DTC No.
*2: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*3: The troubleshooting for this DTC needs CONSULT-III.
*4: When engine is running, MI may flash. For details, refer to EC-457, "
Diagnosis Description". P2128 2128 APP SEN 2/CIRC 1×EC-576
P2135 2135 TP SENSOR-B1 1×EC-580
P2138 2138 APP SENSOR 1×EC-583
DTC*1Items
(CONSULT-III screen terms)Trip MI Reference page
CONSULT-III
ECM*
2

EC-670
< SYMPTOM DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
ENGINE CONTROL SYSTEM SYMPTOMS
SYMPTOM DIAGNOSIS
ENGINE CONTROL SYSTEM SYMPTOMS
Symptom TableINFOID:0000000001161687
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 11232 22 3 2EC-605
Fuel pressure regulator system 334444444 4EC-681
Fuel injector circuit 11232 22 2EC-602
Evaporative emission system 334444444 4EC-683
Air Positive crankcase ventilation sys-
tem
334444444 41EC-631
Incorrect idle speed adjustment 1 1 1 1 1EC-389
Electric throttle control actuator 112332222 2 2EC-531
,
EC-533
,
EC-537
IgnitionIncorrect ignition timing adjustment33111 11 1EC-389
Ignition circuit 11222 22 2EC-625
Main power supply and ground circuit 22333 33 23EC-477
Mass air flow sensor circuit
1
122
222 2EC-487
Engine coolant temperature sensor circuit
333EC-492
Heated oxygen sensor 1 circuitEC-498,
EC-502
Throttle position sensor circuit
22EC-495
,
EC-511
,
EC-547
,
EC-549
,
EC-580
Accelerator pedal position sensor circuit 3 2 1EC-551
,
EC-572
,
EC-576
,
EC-583
Knock sensor circuit 2 3EC-514
Crankshaft position sensor (POS) circuit 2 2EC-516
Camshaft position sensor (PHASE) circuit 3 2EC-520

ENGINE CONTROL SYSTEM SYMPTOMS
EC-671
< SYMPTOM DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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1 - 6: The numbers refer to the order of inspection.
(continued on next page)
SYSTEM — ENGINE MECHANICAL & OTHER
Vehicle speed signal circuit 2 3 3 3EC-634
ECM 22333333333EC-524,
EC-526
Intake valve timing control solenoid valve cir-
cuit32 13223 3EC-528
PNP switch circuit 3 3 3 3 3EC-566
Refrigerant pressure sensor circuit 2 3 3 4EC-632
Electrical load signal circuit 3EC-597
Air conditioner circuit 223333333 3 2HAC-298

(with NAVI)
HAC-
184(with-
out NAVI)
ABS actuator and electric unit (control unit) 4BRC-86
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-672
< SYMPTOM DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
ENGINE CONTROL SYSTEM SYMPTOMS
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank
5
5FL-10
Fuel piping 5 5 5 5 5 5FL-4
Va p o r l o c k—
Valve deposit
5 555 55 5—
Poor fuel (Heavy weight gasoline,
Low octane)—
Air Air duct
55555 5EM-27
Air cleanerEM-27
Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator)
5555EM-27
Electric throttle control actuatorEM-29
Air leakage from intake manifold/
Collector/GasketEM-29
Cranking Battery
111111
11PG-6
Generator circuitCHG-15
Starter circuit 3STR-13
Signal plate 6EM-89
PNP switch 4TM-621

(M/T)
TM-44

(A/T)
Engine Cylinder head
55555 55 5EM-80
Cylinder head gasket 4 3
Cylinder block
66666 66 64
EM-89
Piston
Piston ring
Connecting rod
Bearing
Crankshaft

ENGINE CONTROL SYSTEM SYMPTOMS
EC-673
< SYMPTOM DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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1 - 6: The numbers refer to the order of inspection.Va l v e
mecha-
nismTiming chain
55555 55 5EM-50
CamshaftEM-59
Intake valve timing controlEM-50
Intake valve
3EM-80
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
55555 55 5EM-32
Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery/Oil cooler
55555 55 5EM-40
,
EM-42
,
LU-9
Oil level (Low)/Filthy oilLU-6
Cooling Radiator/Hose/Radiator filler cap
55555 55 45CO-16
Thermostat 5CO-22
Water pumpCO-20
Water galleryCO-24
Cooling fan
5CO-18
(with A/C)
CO-18
(without A/
C)
Coolant level (Low)/Contaminat-
ed coolantCO-11
NATS (NISSAN Vehicle Immobilizer System) 1 1SEC-7
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-674
< SYMPTOM DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
NORMAL OPERATING CONDITION
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000001161688
FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED)
If the engine speed is above 2,500 rpm under no load [for example, the shift lever position is P or N (A/T), neu-
tral (M/T) and engine speed is over 2,500 rpm] fuel will be cut off after some time. The exact time when the fuel
is cut off varies based on engine speed.
Fuel cut will be operated until the engine speed reaches 2,000 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC-401,
"System Description".

EC-676
< PRECAUTION >[HR16DE (WITHOUT EURO-OBD)]
PRECAUTIONS
On Board Diagnostic (OBD) System of Engine and A/T
INFOID:0000000001706098
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MI) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:
 Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any repair
or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will
cause the MI to light up.
 Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
 Certain systems and components, especially those related to OBD, may use a new style slide-lock-
ing type harness connector. For description and how to disconnect, refer to XX-XX, "*****"
.
 Be sure to route and secure the harnesses properly after work. The interference of the harness with
a bracket, etc. may cause the MI to light up due to the short circuit.
 Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to the malfunction of the fuel injection system, etc.
 Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM before
returning the vehicle to the customer.
General PrecautionsINFOID:0000000001706099
Always use a 12 volt battery as power source.
Do not attempt to disconnect battery cables while engine is
running.
Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative bat-
tery cable. Failure to do so may damage the ECM because
battery voltage is applied to ECM even if ignition switch is
turned OFF.
Before removing parts, turn ignition switch OFF and then dis-
connect battery ground cable.
Do not disassemble ECM.
If a battery cable is disconnected, the memory will return to
the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary slightly when the terminal is dis-
connected. However, this is not an indication of a malfunc-
tion. Do not replace parts because of a slight variation.
If the battery is disconnected, the following emission-related
diagnostic information will be lost within 24 hours.
-Diagnostic trouble codes
-1st trip diagnostic trouble codes
-Freeze frame data
-1st trip freeze frame data
-System readiness test (SRT) codes
-Test values
When connecting ECM harness connector (1), fasten (B) it
securely with a lever as far as it will go as shown in the figure.
SEF289H
2. ECM
A. Loosen
PBIA9222J
PBIB2947E