NISSAN LATIO 2009 Service Repair Manual

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3. Check the voltage between IPDM E/R harness connector and
ground.
OK or NG OK >> GO TO 3.
NG >> GO TO 2. OK (Models with A/C)>>GO TO 4.
OK (Models without A/C)>>GO TO 6.
NG >> Repair open circuit or short to power in harness or connectors. OK >> GO TO 8.
NG >> GO TO 5. IPDM E/R Cooling fan motor
Continuity
Connector Terminal Connector Terminal
E44 20
E3 1 Existed
24
Cooling fan motor Ground Continuity
Connector Terminal
E3 2 Ground Existed

OK >> GO TO 8.
NG >> GO TO 7. Component Inspection " .
OK or NG OK >> GO TO 9.
NG >> Replace cooling fan motor. Diagnosis Procedure " .
OK or NG OK >> Replace IPDM E/R. Refer to
PG-27, " Removal and Installation of IPDM E/R " .
NG >> Repair or replace harness or connector.
Component Inspection INFOID:0000000004780696
COOLING FAN MOTOR
Model with A/C IPDM E/R Cooling fan motor
Continuity
Connector Terminal Connector Terminal
E44 20
E3 1
Existed
23 3
24 2
Cooling fan motor Ground Continuity
Connector Terminal
E3 4 Ground Existed

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1. Disconnect cooling fan motor harness connectors.
2. Supply cooling fan motor terminals with battery voltage and check operation.
Cooling fan motor should operate.
If NG, replace cooling fan motor.
Models without A/C 1. Disconnect cooling fan motor harness connectors.
2. Supply cooling fan motor terminals with battery voltage and check operation.
Cooling fan motor should operate.
If NG, replace cooling fan motor. Terminals
(+) (-)
Cooling fan motor 1 2

YES >> GO TO 2.
NO >> Go to EC-428, " Diagnosis Procedure " .
YES >> GO TO 3.
NO >> Go to EC-428, " Diagnosis Procedure " .
YES >> INSPECTION END
NO >> Go to EC-428, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:0000000004780356 Compo-
nent Function Check " .
Which circuit is related to the incident? Rear window defogger>>GO TO 2.
Headlamp>>GO TO 3.
Heater fan>>GO TO 4. Work Flow " .
Monitor item Condition Indication
LOAD SIGNAL Rear window defogger switch ON ON
OFF OFF Monitor item Condition Indication
LOAD SIGNAL Lighting switch ON at 2nd position ON
OFF OFF Monitor item Condition Indication
HEATER FAN SW Heater fan control switch ON ON
OFF OFF

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>> INSPECTION END How to Perform Trouble Diagnosis " (For USA) or
LT-33, " How to Perform Trouble Diagnosis "
(For Canada).
>> INSPECTION END How to Perform Trouble Diagnosis for Quick and Accurate Repair " .
>> INSPECTION END

YES >> GO TO 2.
NO >> Go to EC-431, " Diagnosis Procedure " .
YES >> INSPECTION END
NO >> Go to EC-431, " Diagnosis Procedure " .

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Wiring Diagram
INFOID:0000000004780705
Diagnosis Procedure INFOID:0000000004780359

YES >> GO TO 3.
NO >> GO TO 2. YES >> GO TO 4.
NO >> Repair open circuit or short to ground or short to power in harness or connectors. Component Inspection " .
Is the inspection result normal? YES >> GO TO 5.
NO >> Replace malfunctioning fuel injector. Diagnosis Procedure " .
Is the inspection result normal? YES >> Replace IPDM E/R.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
Component Inspection INFOID:0000000004780360

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2. Disconnect fuel injector harness connector.
3. Check resistance between fuel injector terminals as per the fol- lowing.
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace malfunctioning fuel injector. Terminals Resistance
1 and 2 11.1 - 14.5 Ω [at 10 - 60 °C (50 - 140 °F)]

YES >> INSPECTION END
NO >> EC-435, " Diagnosis Procedure " .
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump controlFuel pump relay
↓
Fuel pump
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Stops.