EC Engine Control System NISSAN TIIDA 2007 Service Repair Manual

NO OR VERY LITTLE ACCELERATION, INCREASE IN ENGINE SPEED
EC-1267
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NO OR VERY LITTLE ACCELERATION, INCREASE IN ENGINE SPEED
DescriptionINFOID:0000000001162713
CHART 8: NO OR VERY LITTLE ACCELERATION, INCREASE IN ENGINE SPEED
Diagnosis ProcedureINFOID:0000000001162714
1.CHECK FUEL
Check that the fuel reservoir is correctly filled and with the right fuel.
>> GO TO 2.
2.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Check ECM power supply and ground circuit. Refer to EC-1106, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness or connector.
3.CHECK WIRING HARNESS
Visually check the condition of the engine wiring harness.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness or connector.
4.CHECK AIR INTAKE SYSTEM
Check air intake system. Refer to EM-269, "
Removal and Installation".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace air intake system.
5.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR
Check electric throttle control actuator. Refer to EC-1134, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace.
6.CHECK MASS AIR FLOW SENSOR
Check mass air flow sensor. Refer to EC-1125, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace.
7.CHECK TURBOCHARGER
Check that the turbocharger is working properly. Refer to EC-1195, "
Diagnosis Procedure".
Is the turbocharger correct?
Yes >> GO TO 8.
No >> Repair or replace.
8.CHECK ACCELERATOR PEDAL POSITION SENSOR
Check the accelerator pedal position sensor. Refer to EC-1193, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace.
9.CHECK EGR SYSTEM
Check EGR system. Refer to EC-1202, "
Diagnosis Procedure".

EC-1268
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NO OR VERY LITTLE ACCELERATION, INCREASE IN ENGINE SPEED
Is the inspection result normal?
YES >> GO TO 10.
NO >> Repair or replace.
10.CHECK CATALYTIC CONVERTER
Is the catalytic converter clogged or deteriorated?
Is the inspection result normal?
YES >> GO TO 11.
NO >> Repair or replace.
11 .CHECK CAN COMMUNICATION
Perform trouble diagnosis on the CAN communication line using CONSULT-III. Refer to LAN-33, "
CAN Com-
munication Signal Chart".
Is the inspection result normal?
YES >> GO TO 12.
NO >> Repair or replace harness or connector.
12.CHECK LOW PRESSURE CIRCUIT
Perform the TEST 1: LOW PRESSURE CIRCUIT CHECK. Refer to EC-1043, "
BASIC INSPECTION : Special
Repair Requirement (TEST 1: Low Pressure Fuel Supply System Check)".
>> GO TO 13.
13.CHECK INTERNAL FUEL TRANSFER PUMP
Perform the TEST 2: INTERNAL FUEL TRANSFER PUMP CHECK. Refer to EC-1044, "
BASIC INSPECTION
: Special Repair Requirement (TEST 2: Internal Fuel Transfer Pump Check)".
>> GO TO 14.
14.CHECK HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE)
Perform the TEST 3: HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE). Refer to EC-1044,
"BASIC INSPECTION : Special Repair Requirement [TEST 3: High Pressure Supply Pump (Pressure Control
Valve) Check]".
>> GO TO 15.
15.CHECK HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE)
Perform the TEST 4: HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE). Refer to EC-
1045, "BASIC INSPECTION : Special Repair Requirement [TEST 4: High Pressure Supply Pump (Volumetric
Control Valve) Check]".
>> GO TO 16.
16.CHECK RAIL HIGH PRESSURE CONTROL CIRCUIT
Perform the TEST 5: RAIL HIGH PRESSURE CONTROL CIRCUIT CHECK. Refer to EC-1048, "
BASIC
INSPECTION : Special Repair Requirement (TEST 5: Rail High Pressure Regulation Check)".
>> GO TO 17.
17.CHECK MAJOR LEAK IN FUEL INJECTOR/FUEL INJECTORS OPEN
Perform the TEST 6: MAJOR LEAK IN FUEL INJECTOR/FUEL INJECTORS OPEN. Refer to EC-1052,
"BASIC INSPECTION : Special Repair Requirement (TEST 6: Major Leak in Fuel Injectors/Fuel Injectors
Open)".
>> GO TO 18.
18.CHECK INCORRECT FUEL INJECTION QUANTITY

EC-1270
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ENGINE BUCKING
ENGINE BUCKING
DescriptionINFOID:0000000001162715
CHART 9: ENGINE BUCKING
Diagnosis ProcedureINFOID:0000000001162716
1.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Check ECM power supply and ground circuit. Refer to EC-1106, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace harness or connector.
2.CHECK WIRING HARNESS
Visually check the condition of the engine wiring harness.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness or connector.
3.CHECK ACCELERATOR PEDAL POSITION SENSOR
Check the accelerator pedal position sensor. Refer to EC-1193, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace.
4.CHECK ASCD CLUTCH SWITCH
Check ASCD clutch switch. Refer to EC-1209, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace.
5.CHECK VEHICLE SPEED SIGNAL
Check the following component.
 “ABS actuator and electric unit (control unit)” [Refer to BRC-25, "
CONSULT-III Function (ABS)" (without
ESP) or BRC-105, "
CONSULT-III Function (ABS)" (with ESP).]
 Combination meter (Refer to MWI-22, "
CONSULT-III Function (METER/M&A)".)
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace.
6.CHECK CAN COMMUNICATION
Perform trouble diagnosis on the CAN communication line using CONSULT-III. Refer to LAN-33, "
CAN Com-
munication Signal Chart".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace harness or connector.
7.CHECK AIR INTAKE SYSTEM
Check air intake system. Refer to EM-269, "
Removal and Installation".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace air intake system.
8.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR
Check electric throttle control actuator. Refer to EC-1134, "
Diagnosis Procedure".
Is the inspection result normal?

ENGINE BUCKING
EC-1271
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YES >> GO TO 9.
NO >> Repair or replace.
9.CHECK MASS AIR FLOW SENSOR
Check mass air flow sensor. Refer to EC-1125, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 10.
NO >> Repair or replace.
10.CHECK LOW PRESSURE CIRCUIT
Perform the TEST 1: LOW PRESSURE CIRCUIT CHECK. Refer to EC-1043, "
BASIC INSPECTION : Special
Repair Requirement (TEST 1: Low Pressure Fuel Supply System Check)".
>> GO TO 11.
11 .CHECK INTERNAL FUEL TRANSFER PUMP
Perform the TEST 2: INTERNAL FUEL TRANSFER PUMP CHECK. Refer to EC-1044, "
BASIC INSPECTION
: Special Repair Requirement (TEST 2: Internal Fuel Transfer Pump Check)".
>> GO TO 12.
12.CHECK HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE)
Perform the TEST 3: HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE). Refer to EC-1044,
"BASIC INSPECTION : Special Repair Requirement [TEST 3: High Pressure Supply Pump (Pressure Control
Valve) Check]".
>> GO TO 13.
13.CHECK HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE)
Perform the TEST 4: HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE). Refer to EC-
1045, "BASIC INSPECTION : Special Repair Requirement [TEST 4: High Pressure Supply Pump (Volumetric
Control Valve) Check]".
>> GO TO 14.
14.CHECK RAIL HIGH PRESSURE CONTROL CIRCUIT
Perform the TEST 5: RAIL HIGH PRESSURE CONTROL CIRCUIT CHECK. Refer to EC-1048, "
BASIC
INSPECTION : Special Repair Requirement (TEST 5: Rail High Pressure Regulation Check)".
>> GO TO 15.
15.CHECK MAJOR LEAK IN FUEL INJECTOR/FUEL INJECTORS OPEN
Perform the TEST 6: MAJOR LEAK IN FUEL INJECTOR/FUEL INJECTORS OPEN. Refer to EC-1052,
"BASIC INSPECTION : Special Repair Requirement (TEST 6: Major Leak in Fuel Injectors/Fuel Injectors
Open)".
>> GO TO 16.
16.CHECK INCORRECT FUEL INJECTION QUANTITY
Perform the TEST 7: INCORRECT FUEL INJECTION QUANTITY. Refer to EC-1053, "
BASIC INSPECTION :
Special Repair Requirement (TEST 7: Incorrect Fuel Injection Quantity)".
>>INSPECTION END

LOSS OF POWER
EC-1275
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LOSS OF POWER
DescriptionINFOID:0000000001162721
CHART 12: LOSS OF POWER
Diagnosis ProcedureINFOID:0000000001162722
1.CHECK FUEL
Check that the fuel reservoir is correctly filled and with the right fuel.
>> GO TO 2.
2.CHECK FUEL FILTER
Check the correctness of the fuel filter.
Is the fuel filter correct?
Yes >> GO TO 3.
No >> Replace the fuel filter with an genuine part.
3.CHECK ENGINE OIL
Check the grade of engine oil. Refer to LU-26, "
Inspection".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace engine oil. Refer to LU-27, "
Refilling"
4.CHECK ENGINE OIL LEVEL
Is the engine oil level correct?
Ye s o r N o
Yes >> GO TO 5.
No >> Top up the oil.
5.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Check ECM power supply and ground circuit. Refer to EC-1106, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace harness or connector.
6.CHECK WIRING HARNESS
Visually check the condition of the engine wiring harness.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace harness or connector.
7.CHECK AIR INTAKE SYSTEM
Check air intake system. Refer to EM-269, "
Removal and Installation".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace.
8.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR
Check electric throttle control actuator. Refer to EC-1134, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace.
9.CHECK MASS AIR FLOW SENSOR
Check mass air flow sensor. Refer to EC-1125, "
Component Inspection".

EXCESSIVE CONSUMPTION
EC-1281
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EXCESSIVE CONSUMPTION
DescriptionINFOID:0000000001162727
CHART 15:EXCESSIVE CONSUMPTION
Diagnosis ProcedureINFOID:0000000001162728
1.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Check ECM power supply and ground circuit. Refer to EC-1106, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace harness or connector.
2.CHECK WIRING HARNESS
Visually check the condition of the engine wiring harness.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness or connector.
3.CHECK AIR INTAKE SYSTEM
Check air intake system. Refer to EM-269, "
Removal and Installation".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace air intake system.
4.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR
Check electric throttle control actuator. Refer to EC-1134, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace.
5.CHECK MASS AIR FLOW SENSOR
Check mass air flow sensor. Refer to EC-1125, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace.
6.CHECK TURBOCHARGER
Check that the turbocharger is working properly. Refer to EC-1195, "
Diagnosis Procedure".
Is the turbocharger correct?
Yes >> GO TO 7.
No >> Repair or replace.
7.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Check engine coolant temperature sensor. Refer to EC-1133, "
Component Inspection".
Is the inspection result normal?
Yes >> GO TO 8.
No >> Repair or replace.
8.CHECK LOW PRESSURE CIRCUIT
Perform the TEST 1: LOW PRESSURE CIRCUIT CHECK. Refer to EC-1043, "
BASIC INSPECTION : Special
Repair Requirement (TEST 1: Low Pressure Fuel Supply System Check)".
>> GO TO 9.
9.CHECK INTERNAL FUEL TRANSFER PUMP

ENGINE KNOCK
EC-1283
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ENGINE KNOCK
DescriptionINFOID:0000000001162729
CHART 16: ENGINE KNOCK
Diagnosis ProcedureINFOID:0000000001162730
1.CHECK ENGINE OIL
Check the grade of engine oil. Refer to LU-26, "
Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace engine oil. Refer to LU-27, "
Refilling"
2.CHECK ENGINE OIL LEVEL
Is the engine oil level correct?
Ye s o r N o
Yes >> GO TO 3.
No >> Top up the oil.
3.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Check ECM power supply and ground circuit. Refer to EC-1106, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness or connector.
4.CHECK WIRING HARNESS
Visually check the condition of the engine wiring harness.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace harness or connector.
5.CHECK AIR INTAKE SYSTEM
Check air intake system. Refer to EM-269, "
Removal and Installation".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace air intake system.
6.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR
Check electric throttle control actuator. Refer to EC-1134, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace.
7.CHECK MASS AIR FLOW SENSOR
Check mass air flow sensor. Refer to EC-1125, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace.
8.CHECK CATALYTIC CONVERTER
Is the catalytic converter clogged or deteriorated?
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace.
9.CHECK HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE)

EC-1286
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ENGINE SMOKES WHEN STARTED
ENGINE SMOKES WHEN STARTED
DescriptionINFOID:0000000001162733
CHART 18: ENGINE SMOKES WHEN STARTED
Diagnosis ProcedureINFOID:0000000001162734
1.CHECK ENGINE OIL
Check the grade of engine oil. Refer to LU-26, "
Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace engine oil. Refer to LU-27, "
Refilling"
2.CHECK ENGINE OIL LEVEL
Is the engine oil level correct?
Ye s o r N o
Ye s > > G O T O 3 .
No >> Top up the oil.
3.CHECK FUEL PUMP TEMPERATURE SENSOR
Check fuel pump temperature sensor. Refer to EC-1137, "
Component Inspection".
Is the inspection result normal?
Ye s > > G O T O 4 .
No >> Repair or replace.
4.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Check engine coolant temperature sensor. Refer to EC-1133, "
Component Inspection".
Is the inspection result normal?
Ye s > > G O T O 5 .
No >> Repair or replace.
5.CHECK COOLING SYSTEM
Check the cooling system. Refer to CO-53, "
Troubleshooting Chart".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace.
6.CHECK HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE)
Perform the TEST 3: HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE). Refer to EC-1044,
"BASIC INSPECTION : Special Repair Requirement [TEST 3: High Pressure Supply Pump (Pressure Control
Valve) Check]".
>> GO TO 7.
7.CHECK HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE)
Perform the TEST 4: HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE). Refer to EC-
1045, "BASIC INSPECTION : Special Repair Requirement [TEST 4: High Pressure Supply Pump (Volumetric
Control Valve) Check]".
>> GO TO 8.
8.CHECK RAIL HIGH PRESSURE CONTROL CIRCUIT
Perform the TEST 5: RAIL HIGH PRESSURE CONTROL CIRCUIT CHECK. Refer to EC-1048, "
BASIC
INSPECTION : Special Repair Requirement (TEST 5: Rail High Pressure Regulation Check)".
>>INSPECTION END

ENGINE EMITS BLUE SMOKE
EC-1287
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ENGINE EMITS BLUE SMOKE
DescriptionINFOID:0000000001162735
CHART 19: ENGINE EMITS BLUE SMOKE
Diagnosis ProcedureINFOID:0000000001162736
1.CHECK ENGINE OIL
Check the grade of engine oil. Refer to LU-26, "
Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace engine oil. Refer to LU-27, "
Refilling"
2.CHECK ENGINE OIL LEVEL
Is the engine oil level correct?
Ye s o r N o
Yes >> GO TO 3.
No >> Top up the oil.
3.CHECK FUEL
Check that the fuel reservoir is correctly filled and with the right fuel.
>> GO TO 4.
4.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Check engine coolant temperature sensor. Refer to EC-1133, "
Component Inspection".
Is the inspection result normal?
Yes >> GO TO 5.
No >> Repair or replace.
5.CHECK AIR INTAKE SYSTEM
Check air intake system. Refer to EM-269, "
Removal and Installation".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace air intake system.
6.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR
Check electric throttle control actuator. Refer to EC-1134, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace.
7.CHECK MASS AIR FLOW SENSOR
Check mass air flow sensor. Refer to EC-1125, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace.
8.CHECK TURBOCHARGER
Check that the turbocharger is working properly. Refer to EC-1195, "
Diagnosis Procedure".
Is the turbocharger correct?
Yes >> GO TO 9.
No >> Repair or replace.
9.CHECK EGR SYSTEM
Check EGR system. Refer to EC-1202, "
Diagnosis Procedure".

EMISSION CONTROL NOT SATISFACTORY
EC-1291
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EMISSION CONTROL NOT SATISFACTORY
DescriptionINFOID:0000000001162741
CHART 22: EMISSION CONTROL NOT SATISFACTORY
Diagnosis ProcedureINFOID:0000000001162742
1.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Check ECM power supply and ground circuit. Refer to EC-1106, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace harness or connector.
2.CHECK WIRING HARNESS
Visually check the condition of the engine wiring harness.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness or connector.
3.CHECK AIR INTAKE SYSTEM
Check air intake system. Refer to EM-269, "
Removal and Installation".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace air intake system.
4.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR
Check electric throttle control actuator. Refer to EC-1134, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace.
5.CHECK MASS AIR FLOW SENSOR
Check mass air flow sensor. Refer to EC-1125, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace.
6.CHECK TURBOCHARGER
Check that the turbocharger is working properly. Refer to EC-1195, "
Diagnosis Procedure".
Is the turbocharger correct?
Yes >> GO TO 7.
No >> Repair or replace.
7.CHECK EGR SYSTEM
Check EGR system. Refer to EC-1202, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace.
8.CHECK HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE)
Perform the TEST 3: HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE). Refer to EC-1044,
"BASIC INSPECTION : Special Repair Requirement [TEST 3: High Pressure Supply Pump (Pressure Control
Valve) Check]".
>> GO TO 9.