2009 NISSAN LATIO wiring

ASCD BRAKE SWITCH
EC-977
< SERVICE INFOMATION >
[MR TYPE 1] C
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2. Disconnect ASCD brake switch (2) harness connector.
- Stop lamp switch (1)
3. Turn ignition switch ON.
4. Check voltage between ASCD brake switch terminal 1 and ground with CONSULT-III or tester.
OK or NG OK (M/T models) >>GO TO 6.
OK (A/T and CVT models) >>GO TO 7.
NG >> GO TO 5. 5.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors M69, E7
• 10A fuse
• Harness for open or short between ASCD brake switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors. 6.
CHECK ASCD BRAKE SWITCH INPUT SIGN AL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ASCD brake switch terminal 2 and ASCD clutch switch terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 7.
CHECK ASCD BRAKE SWITCH INPUT SIGN AL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM term inal 100 and ASCD brake switch terminal 2.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 8.
CHECK ASCD BRAKE SWITCH
Refer to EC-914, " Component Inspection " . BBIA0708E
Voltage: Battery voltage
PBIB0857E
Continuity should exist.
Continuity should exist.

EC-978< SERVICE INFOMATION >
[MR TYPE 1]
ASCD BRAKE SWITCH
OK or NG OK >> GO TO 15.
NG >> Replace ASCD brake switch. 9.
CHECK ASCD CLUTCH SWITCH INPUT SIGN AL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 100 and ASCD clutch switch terminal 2.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 10.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 10.
CHECK ASCD CLUTCH SWITCH
Refer to EC-914, " Component Inspection "
OK or NG OK >> GO TO 15.
NG >> Replace ASCD clutch switch. 11.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch (1) harness connector.
- ASCD brake switch (2)
3. Check voltage between stop lamp switch terminal 1 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 13.
NG >> GO TO 12. 12.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors M69, E7
• 10A fuse Continuity should exist.
BBIA0708E
Voltage: Battery voltage PBIB3317E

ASCD BRAKE SWITCH
EC-979
< SERVICE INFOMATION >
[MR TYPE 1] C
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• Harness for open or short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors. 13.
CHECK STOP LAMP SWITCH INPUT SI GNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 99 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 14.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 14.
CHECK STOP LAMP SWITCH
Refer to EC-914, " Component Inspection " .
OK or NG OK >> GO TO 15.
NG >> Replace stop lamp switch. 15.
CHECK INTERMITTENT INCIDENT
Refer to EC-626 .
>> INSPECTION END
Component Inspection INFOID:0000000004537516
ASCD BRAKE SWITCH 1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Check continuity between ASCD brake switch terminals 1 and 2 under the following conditions.
If NG, adjust ASCD brake switch installation, refer to BR-6 , and
perform step 3 again.
ASCD CLUTCH SWITCH 1. Turn ignition switch OFF.
2. Disconnect ASCD clutch switch harness connector. Continuity should exist.
Condition Continuity
Brake pedal: Fully released. Should exist.
Brake pedal: Slightly depressed. Should not exist. SEC023D

FUEL INJECTOR
EC-987
< SERVICE INFOMATION >
[MR TYPE 1] C
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Wiring Diagram
INFOID:0000000004537525
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
CAUTION: BBWA3003E

FUEL INJECTOR
EC-989
< SERVICE INFOMATION >
[MR TYPE 1] C
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CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuel injector (1) harness connector.
3. Turn ignition switch ON.
4. Check voltage between fuel injector terminal 1 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 5.
NG >> GO TO 4. 4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• IPDM E/R harness connector E45
• 10A fuse
• Harness for open or short between fuel injector and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors. 5.
CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between fuel injector terminal 2 and ECM terminals 25, 29, 30, 31. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 6.
CHECK FUEL INJECTOR
Refer to EC-990, " Component Inspection " .
OK or NG OK >> GO TO 7.
NG >> Replace fuel injector. 7.
CHECK INTERMITTENT INCIDENT
Refer to EC-626 . PBIA9870J
Voltage: Battery voltage
PBIB0582E
Continuity should exist.

FUEL PUMP
EC-995
< SERVICE INFOMATION >
[MR TYPE 1] C
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• Harness for open or short between IPDM E/R
and “fuel level sensor unit and fuel pump”
>> Repair open circuit or short to ground or short to power in harness or connectors. 9.
CHECK FUEL PUMP GROUND CIRCUIT
1. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 3 and ground.
Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG OK >> GO TO 10.
NG >> Repair or replace harness or connectors. 10.
CHECK FUEL PUMP
Refer to EC-995, " Component Inspection " .
OK or NG OK >> GO TO 11.
NG >> Replace fuel pump. 11.
CHECK INTERMITTENT INCIDENT
Refer to EC-626 .
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 connectors.
Component Inspection INFOID:0000000004537533
FUEL PUMP 1. Disconnect “fuel level sensor unit and fuel pump” harness connector.
2. Check resistance between “fuel level sensor unit and fuel pump” terminals 1 and 3.
3. If NG, replace “fuel level sensor unit and fuel pump”.
Removal and Installation INFOID:0000000004537534
FUEL PUMP Refer to FL-5 .
Continuity should exist.
Resistance: Approximately 0.2 - 5.0 Ω [at 25 °C (77 °F)] SEC918C

IGNITION SIGNAL
EC-997
< SERVICE INFOMATION >
[MR TYPE 1] C
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Wiring Diagram
INFOID:0000000004537536
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals wh en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground. BBWA2658E

IGNITION SIGNAL
EC-1001
< SERVICE INFOMATION >
[MR TYPE 1] C
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OK >>
INSPECTION END
NG >> GO TO 10. 4.
CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
2. Check voltage between ECM terminal 105 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 5.
NG >> Go to EC-627 .
5.
CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect condenser-2 (1) harness connector.
3. Turn ignition switch ON.
4. Check voltage between condenser-2 terminal 1 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 8.
NG >> GO TO 6. 6.
CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E43.
3. Check harness continuity between IPDM E/R terminal 3 and condenser-2 terminal 1.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG OK >> Go to
EC-627 .
NG >> GO TO 7. 7.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8 Voltage: Battery voltage
PBIA9575J
PBIB3329E
Voltage: Battery voltage
PBIB0624E
Continuity should exist.