engine NISSAN TIIDA 2007 Service Repair Manual

P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
EC-531
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P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
DescriptionINFOID:0000000001693324
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The throttle position sensor detects the throttle valve position, and the opening and closing speed of the throt-
tle valve and feeds the voltage signals to the ECM. The ECM judges the current opening angle of the throttle
valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening
angle properly in response to driving condition.
DTC LogicINFOID:0000000001693325
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A AND B
1. Turn ignition switch ON and wait at least 1 second.
2. Set shift lever to D (A/T), 1st (M/T) position and wait at least 3 seconds.
3. Set shift lever to P or N (A/T), Neutral (M/T) position.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Turn ignition switch ON and wait at least 1 second.
6. Set shift lever to D (A/T), 1st (M/T) position and wait at least 3 seconds.
7. Set shift lever to P or N (A/T), Neutral (M/T) position.
8. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
9. Check DTC.
Is DTC detected?
YES >> Go to EC-531, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
1. Turn ignition switch ON and wait at least 1 second.
2. Set shift lever to D (A/T), 1st (M/T) position and wait at least 3 seconds.
3. Set shift lever to P or N (A/T), Neutral (M/T) position.
4. Start engine and let it idle for 3 seconds.
5. Check DTC.
Is DTC detected?
YES >> Go to EC-531, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001693326
1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1121Electric throttle control
actuatorA)Electric throttle control actuator does not func-
tion properly due to the return spring malfunc-
tion.
 Electric throttle control actuator
B)Throttle valve opening angle in fail-safe mode is
not in specified range.
C) ECM detect the throttle valve is stuck open.

P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-533
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P1122 ELECTRIC THROTTLE CONTROL FUNCTION
DescriptionINFOID:0000000001693328
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
DTC LogicINFOID:0000000001693329
DTC DETECTION LOGIC
NOTE:
If DTC P1122 is displayed with DTC P1121 or P1126, first perform the trouble diagnosis for DTC P1121
or P1126. Refer to EC-537, "
DTC Logic" or EC-531, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V when engine
is running.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
Is DTC detected?
YES >> Go to EC-533, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001693330
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. 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 THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
1. Check the voltage between ECM harness connector terminals as follows.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1122Electric throttle control
performanceElectric throttle control function does not oper-
ate properly. Harness or connectors
(Throttle control motor circuit is open or
shorted)
 Electric throttle control actuator

P1124, P1126 THROTTLE CONTROL MOTOR RELAY
EC-537
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P1124, P1126 THROTTLE CONTROL MOTOR RELAY
DescriptionINFOID:0000000001693333
Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle
control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends
an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition
switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not
provided to the ECM.
DTC LogicINFOID:0000000001693334
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8V.
Witch DTC is detected?
P1126 >> GO TO 2.
P1124 >> GO TO 3.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P1126
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
Is DTC detected?
YES >> Go to EC-537, "Diagnosis Procedure".
NO >> INSPECTION END
3.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P1124
1. Turn ignition switch ON and wait at least 1 second.
2. Check DTC.
Is DTC detected?
YES >> Go to EC-537, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001693335
1.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
1. Turn ignition switch OFF.
2. Check the voltage between ECM harness connector terminals as follows.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1124Throttle control motor
relay circuit openECM detects a voltage of power source for
throttle control motor is excessively low. Harness or connectors
(Throttle control motor relay circuit is
open)
 Throttle control motor relay
P1126Throttle control motor
relay circuit shortECM detect the throttle control motor relay is
stuck ON. Harness or connectors
(Throttle control motor relay circuit is
shorted)
 Throttle control motor relay

EC-540
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P1128 THROTTLE CONTROL MOTOR
P1128 THROTTLE CONTROL MOTOR
DescriptionINFOID:0000000001693336
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
DTC LogicINFOID:0000000001693337
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
Is DTC detected?
YES >> Go to EC-540, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001693338
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. 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 THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect electric throttle control actuator harness connector.
2. Disconnect ECM harness connector.
3. Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1128Throttle control motor
circuit shortECM detects short in both circuits between
ECM and throttle control motor. Harness or connectors
(Throttle control motor circuit is shorted.)
 Electric throttle control actuator
(Throttle control motor)
Electric throttle control actuator ECM
Continuity
Connector Terminal Connector Terminal
F75
F101Not existed
4 Existed
61 Existed
4Not existed

EC-542
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P1212 TCS COMMUNICATION LINE
P1212 TCS COMMUNICATION LINE
DescriptionINFOID:0000000001693359
This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse
signals are exchanged between ECM and “ABS actuator and electric unit (control unit)”.
Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit
(control unit)” but also for ECM after TCS related repair.
DTC LogicINFOID:0000000001693360
DTC DETECTION LOGIC
NOTE:
If DTC P1212 is displayed with DTC U1000 U1001, first perform the trouble diagnosis for DTC U1000
U1001. Refer to EC-481, "
DTC Logic".
If DTC P1212 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer
to EC-482, "
DTC Logic".
Freeze frame data is not stored in the ECM for this self-diagnosis.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for at least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-542, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001693361
Go to BRC-86, "Work Flow".
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1212 TCS communication lineECM can not receive the information from
“ABS actuator and electric unit (control
unit)” continuously. Harness or connectors
(The CAN communication line is open or short-
ed.)
 ABS actuator and electric unit (control unit)
 Dead (Weak) battery

P1217 ENGINE OVER TEMPERATURE
EC-543
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P1217 ENGINE OVER TEMPERATURE
DTC LogicINFOID:0000000001693362
DTC DETECTION LOGIC
NOTE:
If DTC P1217 is displayed with DTC U1000 U1001, first perform the trouble diagnosis for DTC U1000
U1001. Refer to EC-481, "
DTC Logic".
If DTC P1217 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer
to EC-482, "
DTC Logic".
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer to CO-11, "
Inspection". Also,
replace the engine oil. Refer to LU-7, "
Draining".
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer to MA-20, "
SAE Viscosity Number".
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
DTC CONFIRMATION PROCEDURE
1.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-543, "
Component Function Check".
NOTE:
Use component function check to check the overall function of the cooling fan. During this check, a DTC might
not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-544, "
Diagnosis Procedure".
Component Function CheckINFOID:0000000001693363
1.PERFORM COMPONENT FUNCTION CHECK-I
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1217Engine over tempera-
ture (Overheat) Cooling fan does not operate properly (Over-
heat).
 Cooling fan system does not operate proper-
ly (Overheat).
 Engine coolant was not added to the system
using the proper filling method.
 Engine coolant is not within the specified
range. Harness or connectors
(The cooling fan circuit is open or short-
ed.)
 IPDM E/R (Cooling fan relay-1, -2, -3)
 Cooling fan motor
 Radiator hose
Radiator
Radiator cap
 Reservoir tank
 Water pump
Thermostat

EC-544
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P1217 ENGINE OVER TEMPERATURE
Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
Is the coolant level in the reservoir tank and/or radiator below the
proper range?
YES >> Go to EC-544, "Diagnosis Procedure".
NO >> GO TO 2.
2.PERFORM COMPONENT FUNCTION CHECK-II
Confirm whether customer filled the coolant or not.
Did customer fill the coolant?
YES >> Go to EC-544, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM COMPONENT FUNCTION CHECK-III
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-III.
3. Make sure that cooling fan motor operate at each speed (LOW/HI).
Without CONSULT-III
Perform IPDM E/R auto active test and check cooling fan motors operation, refer to PCS-10, "
Diagnosis
Description".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-544, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001693364
1.INSPECTION START
Do you have CONSULT-III?
Ye s o r N o
Ye s > > G O T O 2 .
No-1 >> With A/C models: GO TO 4.
No-2 >> Without A/C models: GO TO 5
2.CHECK COOLING FAN LOW SPEED OPERATION
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-III and touch “LOW” on the CON-
SULT-III screen.
3. Make sure that cooling fan operates at low speed.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Check cooling fan control circuit. Refer to EC-593, "
Diagnosis Procedure".
3.CHECK COOLING FAN HIGH SPEED OPERATION
With CONSULT-III
1. Touch “HIGH” on the CONSULT-III screen.
2. Make sure that cooling fan operates at higher speed than low speed.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Check cooling fan control circuit. Refer to EC-593, "
Diagnosis Procedure".
SEF621W

P1217 ENGINE OVER TEMPERATURE
EC-545
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4.CHECK COOLING FAN LOW SPEED OPERATION
Without CONSULT-III
1. Start engine and let it idle.
2. Turn air conditioner switch ON.
3. Turn blower fan switch ON.
4. Make sure that cooling fan operates at low speed.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Check cooling fan speed control circuit. Refer to EC-593, "
Diagnosis Procedure".
5.CHECK COOLING FAN LOW SPEED OPERATION
Without CONSULT-III
1. Perfom IPDM E/R auto active test and check cooling fan motor operation. Refer to PCS-10, "
Diagnosis
Description".
2. Make sure that cooling fan operates at low speed.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Check cooling fan speed control circuit. Refer to EC-593, "
Diagnosis Procedure"
6.CHECK COOLING FAN HIGH SPEED OPERATION.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Turn air conditioner switch and blower fan switch OFF.
3. Disconnect engine coolant temperature sensor harness connector.
4. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
5. Restart engine and make sure that cooling fan operates at higher speed than low speed.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Check cooling fan speed control circuit. Refer to EC-593, "
Diagnosis Procedure".
7.CHECK COOLING SYSTEM FOR LEAK
Check cooling system for leak. Refer to CO-11, "
Inspection".
Is leakage detected?
YES >> GO TO 9.
NO >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the following for leak. Refer to CO-11, "
Inspection".
Hose
 Radiator
 Water pump
 Reservoir tank
>> Repair or replace.
9.CHECK RESERVOIR TANK CAP
Check radiator cap. Refer to CO-14, "
Checking Radiator Cap".
Is the inspection result normal?
YES >> GO TO 10.
NO >> Replace radiator cap.
10.CHECK THERMOSTAT
Check thermostat.
Is the inspection result normal?
YES >> GO TO 11.
NO >> Replace thermostat.

EC-546
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P1217 ENGINE OVER TEMPERATURE
11 .CHECK ENGINE COOLANT TEMPERATURE SENSOR
Check engine coolant temperature sensor.
Is the inspection result normal?
OK >> GO TO 12.
NG >> Replace engine coolant temperature sensor.
12.CHECK MAIN 12 CAUSES
If the cause cannot be isolated, check the following.
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to CO-6, "
Troubleshooting Chart".
>> INSPECTION END
Engine Step Inspection item Equipment Standard Reference page
OFF 1  Blocked radiator
 Blocked condenser
 Blocked radiator grille
 Blocked bumper Visual No blocking —
2  Coolant mixture  Coolant tester 50 - 50% coolant mixtureMA-20, "
SAE Viscosity
Number"
3  Coolant level  Visual Coolant up to MAX level in
reservoir tank and radiator
filler neckCO-11, "Inspection"
4  Reservoir tank cap  Pressure tester 59 - 98 kPa
(0.6 - 1.0 bar, 0.6 - 1.0 kg/
cm
2, 9 - 14 psi) (Limit)CO-14, "
Checking Radia-
tor Cap"
ON*25  Coolant leaks  Visual No leaksCO-11, "Inspection"
ON*26  Thermostat  Touch the upper and
lower radiator hosesBoth hoses should be hotCO-22, "Removal and In-
stallation"
ON*17  Cooling fan motor  CONSULT-III OperatingEC-543, "Component
Function Check"
OFF 8  Combustion gas leak  Color checker chemical
tester 4 Gas analyzerNegative —
ON*
39  Coolant temperature
gauge Visual Gauge less than 3/4 when
driving—
 Coolant overflow to res-
ervoir tank Visual No overflow during driving
and idlingCO-11, "
Inspection"
OFF*410  Coolant return from res-
ervoir tank to radiator Visual Should be initial level in
reservoir tankCO-11, "Inspection"
OFF 11  Cylinder head  Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)EM-80, "Removal and In-
stallation"
12  Cylinder block and pis-
tons Visual No scuffing on cylinder
walls or pistonEM-108, "Inspection"

P1229 SENSOR POWER SUPPLY
EC-551
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P1229 SENSOR POWER SUPPLY
DTC LogicINFOID:0000000001693373
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 1 second.
2. Check DTC.
Is DTC detected?
YES >> Go to EC-551, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001693374
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. 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 ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 3.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1229Sensor power supply
circuit shortECM detects a voltage of power source for
sensor is excessively low or high. Harness or connectors
(APP sensor 1 circuit is shorted.)
(TP sensor circuit is shorted.)
[Camshaft position sensor (PHASE) circuit is
shorted.]
 Accelerator pedal position sensor
(APPS 1)
 Throttle position sensor
 Camshaft position sensor (PHASE)
APP sensor
Ground Voltage
Connector Terminal
E12 (LHD models)
M204 (RHD models)4 Ground Approx. 5V