2007 NISSAN TIIDA Cooling

COOLING FAN CONTROL
EC-1099
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1. Turbocharger boost sensor 2. Mass air flow sensor 3. EGR volume control valve
4. ECM 5. Battery 6. Engine coolant temperature sensor
7. Camshaft position sensor 8. Fuel injector 9. Crankshaft position sensor
: Vehicle front
ALBIA0297ZZ

EC-1100
< FUNCTION DIAGNOSIS >[K9K]
COOLING FAN CONTROL
1. Turbocharger boost control solenoid
valve2. Fuel pump 3. Turbocharger boost sensor
4. Refrigerant pressure sensor 5. EGR volume control valve 6. Engine oil filler cap
7. Accelerator pedal position sensor 8. Accelerator pedal
: Vehicle front
ALBIA0301ZZ

COOLING FAN CONTROL
EC-1101
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1. Fuel rail pressure sensor 2. Glow relay 3. Glow plug
4. Priming pump 5. Electronic throttle control actuator 6. Turbocharger boost control solenoid
valve
: Vehicle front
ALBIA0303ZZ

EC-1102
< FUNCTION DIAGNOSIS >[K9K]
COOLING FAN CONTROL
1. ASCD steering switch 2. ASCD switch 3. CANCEL switch
4. RESUME switch 5. SET - switch 6. SET + switch
7. Stop lamp switch 8. Brake pedal 9. ASCD clutch switch
10. Clutch pedal
AWBIA0056ZZ

EC-1132
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P0115 ECT SENSOR
P0115 ECT SENSOR
DescriptionINFOID:0000000001162581
The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies
a voltage signal from the ECM. The modified signal returns to the ECM as the engine coolant temperature
input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance
of the thermistor decreases as temperature increases.
DTC LogicINFOID:0000000001162582
DTC DETECTION LOGIC
NOTE:
Conditions for applying the diagnostic procedure to the stored DTCs:
The DTC is declared present after the ignition has been switched on for at least 10 seconds.
If the DTC is present:
- Cooling fan motor is always operate.
- Air conditioner is not operate.
Diagnosis ProcedureINFOID:0000000001162583
1.CHECK GROUND CONNECTIONS
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 ENGINE COOLANT TEMPERATURE SENSOR SUPPLY CIRCUIT
1. Disconnect engine coolant temperature sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between engine coolant temperature sensor connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK ENGINE COOLANT TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between engine coolant temperature sensor harness connector and ECM harness
connector.
DTC No. Trouble diagnosis name Possible cause
P0115ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT
 CC.0: Short circuit to ground
 CO.1: Open circuit or short circuit to +12V
 1.DEF: Micro-breaks
 2.DEF: Signal incoherence Harness or connectors
(Engine coolant temperature sensor cir-
cuit is open or shorted.)
 Engine coolant temperature sensor
Engine coolant temperature sensor
Ground Voltage
Connector Terminal
F6 3 Ground Approx. 5V
Engine coolant temperature sensor ECM
Continuity
Connector Terminal Connector Terminal
F6 2 F10 33 Existed

EC-1166
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P0530 REFRIGERANT PRESSURE SENSOR
P0530 REFRIGERANT PRESSURE SENSOR
DescriptionINFOID:0000000001162634
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.
DTC LogicINFOID:0000000001162635
DTC DETECTION LOGIC
NOTE:
If DTC P0530 is displayed with DTC P0641, first perform the trouble diagnosis for DTC P0641 Refer to
EC-1180, "
DTC Logic".
Diagnosis ProcedureINFOID:0000000001162636
1.CHECK GROUND CONNECTIONS
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 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 connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E8, F8
 Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-
tor.
DTC No. Trouble diagnosis name Possible cause
P0530REFRIGERANT PRESSURE SENSOR CIRCUIT
 CO.0: Short circuit to +12V or open circuit
 CC.1: Short circuit to ground Harness or connectors
(Refrigerant pressure sensor circuit is
open or shorted.)
 Refrigerant pressure sensor
Refrigerant pressure sensor
Ground Voltage
Connector Terminal
E17 3 Ground Approx. 5V

COOLING FAN
EC-1211
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COOLING FAN
DescriptionINFOID:0000000001162687
Cooling fan operates at each speed when the current flows in the cooling fan motor as follows.
Refer to EC-1097, "
System Description" for cooling fan operation.
Component Function CheckINFOID:0000000001162688
1.CHECK COOLING FAN LOW SPEED FUNCTION
1. Start engine and let it idle.
2. Turn air conditioner switch and blower fan switch ON.
3. Make sure that cooling fan operates at low speed.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to EC-1211, "
Diagnosis Procedure".
2.CHECK COOLING FAN HIGH SPEED FUNCTION
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 >> INSPECTION END
NO >> Refer to EC-1211, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001162689
1.CHECK CAN COMMUNICATION LINE
Refer to LAN-33, "
CAN Communication Signal Chart".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace
2.CHECK COOLING FAN RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E44.
3. Check the voltage between IPDM E/R harness connectors and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
 50A fusible link (letter J)
 Harness for open or short between IPDM E/R and battery
>> Repair or replace malfunctioning part.
4.CHECK COOLING FAN CIRCUIT FOR OPEN AND SHORT
1. Disconnect cooling fan motor harness connector.
IPDM E/R
Ground Voltage
Connector Terminal
E44 22 Ground Battery voltage

EC-1212
< COMPONENT DIAGNOSIS >[K9K]
COOLING FAN
2. Disconnect IPDM E/R harness connectors E46 and E48.
3. Check the continuity between cooling fan motor harness connector and IPDM E/R harness connector.
4. Check the continuity between IPDM E/R harness connector and ground.
5. Check the continuity between cooling fan motor and ground harness connector.
6. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
 Harness for open or short between cooling fan motor and IPDM E/R
 Harness for open or short between IPDM E/R and ground
 Harness for open or short between cooling fan motor and ground
Resistor E5
>> Repair or replace malfunctioning part.
6.CHECK COOLING FAN MOTOR
Refer to EC-1212, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Replace cooling fan motor.
7.CHECK INTERMITTENT INCIDENT
Refer to GI-55, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace harness or connector.
Component InspectionINFOID:0000000001162690
1.CHECK COOLING FAN MOTOR
1. Turn ignition switch OFF.
2. Disconnect cooling fan motor harness connector E3.
3. Supply cooling fan motor terminal with battery voltage and check operation.
Cooling fan motor IPDM E/R
Continuity
Connector Terminal Connector Terminal
E3 1 E4420
Existed
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IPDM E/R
Ground Continuity
Connector Terminal
E46 39
Ground Existed
E48 59
Cooling fan motor
Ground Continuity
Connector Terminal
E3 2 Ground Existed