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![NISSAN LATIO 2009 Service Repair Manual FUEL PUMP
EC-1517
< SERVICE INFOMATION >
[MR TYPE 2] C
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• Harness for open or short between IPDM E/R
and “fuel level sensor unit and fuel pump”
>> Repair open circu NISSAN LATIO 2009 Service Repair Manual FUEL PUMP
EC-1517
< SERVICE INFOMATION >
[MR TYPE 2] C
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• Harness for open or short between IPDM E/R
and “fuel level sensor unit and fuel pump”
>> Repair open circu](/manual-img/5/57359/w960_57359-2872.png)
FUEL PUMP
EC-1517
< SERVICE INFOMATION >
[MR TYPE 2] 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-1517, " Component Inspection " .
OK or NG OK >> GO TO 11.
NG >> Replace fuel pump. 11.
CHECK INTERMITTENT INCIDENT
Refer to EC-1138 .
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:0000000004500419
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:0000000004500420
FUEL PUMP Refer to FL-5 .
Continuity should exist.
Resistance: Approximately 0.2 - 5.0 Ω [at 25 °C (77 °F)] SEC918C
Page 2874 of 4331
EC-1518< SERVICE INFOMATION >
[MR TYPE 2]
IGNITION SIGNAL
IGNITION SIGNAL
Component Description INFOID:0000000004500421
IGNITION COIL & POWER TRANSISTOR
The ignition signal from the ECM is sent to and amplified by the
power transistor. The power transistor turns ON and OFF the ignition
coil (1) primary circuit. This ON/OFF operation induces the proper
high voltage in the coil secondary circuit. PBIB3328E
Page 2875 of 4331
IGNITION SIGNAL
EC-1519
< SERVICE INFOMATION >
[MR TYPE 2] C
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Wiring Diagram
INFOID:0000000004500422
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
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Page 2877 of 4331
IGNITION SIGNAL
EC-1521
< SERVICE INFOMATION >
[MR TYPE 2] C
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Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
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. BBWA2659E
Page 2878 of 4331
![NISSAN LATIO 2009 Service Repair Manual EC-1522< SERVICE INFOMATION >
[MR TYPE 2]
IGNITION SIGNAL
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis Procedure INFOID:00000000045004231.
CHECK NISSAN LATIO 2009 Service Repair Manual EC-1522< SERVICE INFOMATION >
[MR TYPE 2]
IGNITION SIGNAL
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis Procedure INFOID:00000000045004231.
CHECK](/manual-img/5/57359/w960_57359-2877.png)
EC-1522< SERVICE INFOMATION >
[MR TYPE 2]
IGNITION SIGNAL
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis Procedure INFOID:00000000045004231.
CHECK ENGINE START
Turn ignition switch OFF, and restart engine.
Is engine running?
Yes or No Yes (With CONSULT-III)>>GO TO 2.
Yes (Without CONSULT-III)>>GO TO 3.
No >> GO TO 4. 2.
CHECK OVERALL FUNCTION
With CONSULT-III
1. Perform “POWER BALANCE” in “A CTIVE TEST” mode with CONSULT-III.
2. Make sure that each circuit produces a momentary engine speed drop.
OK or NG OK >>
INSPECTION END
NG >> GO TO 10. 3.
CHECK OVERALL FUNCTION
Without CONSULT-III
1. Let engine idle.
2. Read the voltage signal between ECM terminals 17, 18, 21, 22
and ground with an oscilloscope.
3. Verify that the oscilloscope screen shows the signal wave as shown below.
NOTE:
The pulse cycle changes depending on rpm at idle.
OK or NG TER-
MI-
NAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
17
18
21
22 R
LG
G
SB Ignition signal No. 1
Ignition signal No. 2
Ignition signal No. 4
Ignition signal No. 3 [Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle 0 - 0.3V
[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm 0.2 - 0.5V PBIA9265J
PBIA9266J
PBIA9567J
PBIA9265J
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![NISSAN LATIO 2009 Service Repair Manual IGNITION SIGNAL
EC-1523
< SERVICE INFOMATION >
[MR TYPE 2] C
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OK >>
INSPECTION END
NG >> GO TO 10. 4.
CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OF NISSAN LATIO 2009 Service Repair Manual IGNITION SIGNAL
EC-1523
< SERVICE INFOMATION >
[MR TYPE 2] C
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OK >>
INSPECTION END
NG >> GO TO 10. 4.
CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OF](/manual-img/5/57359/w960_57359-2878.png)
IGNITION SIGNAL
EC-1523
< SERVICE INFOMATION >
[MR TYPE 2] 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-1139 .
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-1139 .
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.
Page 2880 of 4331
![NISSAN LATIO 2009 Service Repair Manual EC-1524< SERVICE INFOMATION >
[MR TYPE 2]
IGNITION SIGNAL
• Harness for open or short between IPDM E/R and condenser-2 >> Repair open circuit or short to ground or short to power in harness or conne NISSAN LATIO 2009 Service Repair Manual EC-1524< SERVICE INFOMATION >
[MR TYPE 2]
IGNITION SIGNAL
• Harness for open or short between IPDM E/R and condenser-2 >> Repair open circuit or short to ground or short to power in harness or conne](/manual-img/5/57359/w960_57359-2879.png)
EC-1524< SERVICE INFOMATION >
[MR TYPE 2]
IGNITION SIGNAL
• Harness for open or short between IPDM E/R and condenser-2 >> Repair open circuit or short to ground or short to power in harness or connectors. 8.
CHECK CONDENSER-2 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between condenser-2 terminal 2 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG OK >> GO TO 9.
NG >> Repair open circuit or short to power in harness or connectors. 9.
CHECK CONDENSER-2
Refer to EC-1525, " Component Inspection "
OK or NG
OK >> GO TO 10.
NG >> Replace condenser-2. 10.
CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect ignition coil (1) harness connector.
4. Turn ignition switch ON.
5. Check voltage between ignition coil terminal 3 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 12.
NG >> GO TO 11. 11.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connector F8
• Harness for open or short between ignition coil and harness connector F8
>> Repair or replace harness or connectors. 12.
CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF. Continuity should exist.
PBIB3328E
Voltage: Battery voltage
PBIB0138E