NISSAN LATIO 2009 Service Repair Manual

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Wiring Diagram
INFOID:0000000004780706
Diagnosis Procedure INFOID:0000000004780363 B

YES >> GO TO 4.
NO >> GO TO 2. YES >> GO TO 4.
NO >> GO TO 10. YES >> GO TO 8.
NO >> GO TO 5. YES >> GO TO 6.ECM
Ground Voltage
Connector Terminal
F10 23 Ground Battery voltage

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NO >> Replace15 A fuse.
YES >> GO TO 10.
NO >> GO TO 7. YES >> GO TO 9.
NO >> Repair open circuit or short to power in harness or connectors. Component Inspection " .
Is the inspection result normal? YES >> GO TO 10.
NO >> Replace “fuel level sensor unit and fuel pump”. Diagnosis Procedure " .
Is the inspection result normal? YES >> Replace IPDM E/R.
NO >> Repair or replace harness or connectors.
Component Inspection INFOID:0000000004780364Fuel level sensor unit
and fuel pump Ground Continuity
Connector Terminal
B100 3 Ground Existed

YES >> INSPECTION END
NO >> Replace “fuel level sensor unit and fuel pump”. Terminals Resistance
1 and 3 0.2 - 5.0 Ω [at 25 °C (77 °F)]

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IGNITION SIGNAL
Description INFOID:0000000004780366
The ignition signal from the ECM is sent to and amplifi ed by the power transistor. The power transistor turns
ON and OFF the ignition coil primary circuit. This ON /OFF operation induces the proper high voltage in the coil
secondary circuit.
Component Function Check INFOID:0000000004780367YES-1 >> With CONSULT-III: GO TO 2.
YES-2 >> Without CONSULT-III: GO TO 3.
NO >> Go to EC-441, " Diagnosis Procedure " .
YES >> INSPECTION END
NO >> Go to EC-441, " Diagnosis Procedure " .
YES >> INSPECTION END
NO >> Go to EC-441, " Diagnosis Procedure " .

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Diagnosis Procedure INFOID:0000000004780368

YES >> GO TO 2.
NO >> Go to EC-121, " Diagnosis Procedure " .
YES >> GO TO 5.
NO >> GO TO 3. YES >> Go to
EC-121, " Diagnosis Procedure " .
NO >> GO TO 4. Condenser-2
Ground Continuity
Connector Terminal
F26 2 Ground Existed

IGNITION SIGNAL
EC-443
< COMPONENT DIAGNOSIS >
[HR16DE] C
D E
F
G H
I
J
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M A EC
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3. Also check harness for short to power.
Is the inspection result normal? YES >> GO TO 6.
NO >> Repair open circuit or short to ground or short to power in harness or connectors. 6.
CHECK CONDENSER
Refer to EC-445, " Component Inspection (Condenser-2) " .
Is the inspection result normal? YES >> GO TO 7.
NO >> Replace condenser. 7.
CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Reconnect all harness connectors disconnected.
2. Disconnect ignition coil harness connector.
3. Turn ignition switch ON.
4. Check the voltage between ignition coil harness connector and ground.
Is the inspection result normal? YES >> GO TO 8.
NO >> Repair open circuit or short to ground or short to power in harness or connectors. 8.
CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check the continuity between ignition coil harness connector and ground.
3. Also check harness for short to power.
Is the inspection result normal? YES >> GO TO 9.
NO >> Repair open circuit or short to ground or short to power in harness or connectors. 9.
CHECK IGNITION COIL OUTPUT SI GNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check the continuity between ECM harness connector and ignition coil harness connector. Ignition coil
Ground Voltage
Cylinder Connector Terminal
1 F34 3
Ground Battery voltage
2 F35 3
3 F36 3
4 F37 3 PBIB0138E
Ignition coil
Ground Continuity
Cylinder Connector Terminal
1 F34 2
Ground Existed
2 F35 2
3 F36 2
4 F37 2

YES >> GO TO 10.
NO >> Repair open circuit or short to ground or short to power in harness or connectors. Component Inspection (Ignition Coil with Power Transistor) " .
Is the inspection result normal? YES >> GO TO 11.
NO >> Replace malfunctioning ignition coil with power transistor. Diagnosis Procedure " .
>> INSPECTION END
Component Inspection (Igniti on Coil with Power Transistor) INFOID:0000000004780369YES >> GO TO 2.
NO >> Replace malfunctioning ignition coil with power transis- tor. Terminals Resistance [
Ω at 25 °C (77 °F)]
1 and 2 Except 0 or ∞
1 and 3 Except 0
2 and 3