NISSAN TIIDA 2008 Service Repair Manual

FUEL PUMP
EC-527
< SERVICE INFORMATION >
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Wiring DiagramINFOID:0000000001703067
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
BBWA3004E

EC-528
< SERVICE INFORMATION >
FUEL PUMP
Diagnosis Procedure
INFOID:0000000001703068
1.CHECK OVERALL FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose (1) with two fingers.
- Illustration shows the view with intake air duct removed.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check voltage between ECM terminal 23 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E46.
3. Turn ignition switch ON.
4. Check voltage between IPDM E/R terminal 47 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 11.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
23 GR Fuel pump relay[Ignition switch: ON]
• For 1 second after turning ignition switch ON
[Engine is running]0 - 1.0V
[Ignition switch: ON]
• More than 1 second after turning ignition
switch ONBATTERY VOLTAGE
(11 - 14V)
Fuel pressure pulsation should be felt on the fuel feed
hose for 1 second after ignition switch is turned ON.
BBIA0712E
Voltage: Battery voltage
PBIA9573J
Voltage: Battery voltage
PBIB3319E

FUEL PUMP
EC-529
< SERVICE INFORMATION >
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4.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between IPDM E/R and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect “fuel level sensor unit and fuel pump” harness con-
nector (1).
- Illustration shows the view with inspection hole cover removed.
4. Turn ignition switch ON.
5. Check voltage between “fuel level sensor unit and fuel pump”
terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 9.
NG >> GO TO 6.
6.CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse.
3. Check 15A fuse.
OK or NG
OK >> GO TO 7.
NG >> Replace fuse.
7.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-IV
1. Disconnect IPDM E/R harness connector E45.
2. Check harness continuity between IPDM E/R terminal 36 and “fuel level sensor unit and fuel pump” termi-
nal 1. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 13.
NG >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors M69, E7
• Harness connectors M12, B101
BBIA0702E
Voltage: Battery voltage should exist for 1 second
after ignition switch is turned ON.
PBIB0795E
Continuity should exist.

EC-530
< SERVICE INFORMATION >
FUEL PUMP
• 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-530, "
Component Inspection".
OK or NG
OK >> GO TO 11.
NG >> Replace fuel pump.
11 .CHECK INTERMITTENT INCIDENT
Refer to EC-136
.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-26, "Removal and Installation of IPDM E/R".
NG >> Repair or replace harness or connectors.
Component InspectionINFOID:0000000001703069
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 InstallationINFOID:0000000001703070
FUEL PUMP
Refer to FL-5. Continuity should exist.
Resistance: Approximately 0.2 - 5.0Ω [at 25°C (77°F)]
SEC918C

IGNITION SIGNAL
EC-531
< SERVICE INFORMATION >
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IGNITION SIGNAL
Component DescriptionINFOID:0000000001703071
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

EC-532
< SERVICE INFORMATION >
IGNITION SIGNAL
Wiring Diagram
INFOID:0000000001703072
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
BBWA2658E

IGNITION SIGNAL
EC-533
< SERVICE INFORMATION >
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TER-
MI-
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NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
32 PECM relay
(Self shut-off)[Engine is running]
[Ignition switch: OFF]
• For a few seconds after turning ignition
switch OFF0 - 1.0V
[Ignition switch: OFF]
• More than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
105 G Power supply for ECM[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)

EC-534
< SERVICE INFORMATION >
IGNITION SIGNAL
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
BBWA2659E

IGNITION SIGNAL
EC-535
< SERVICE INFORMATION >
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: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis ProcedureINFOID:0000000001703073
1.CHECK ENGINE START
Turn ignition switch OFF, and restart engine.
Is engine running?
Ye s o r N o
Yes (With CONSULT-II)>>GO TO 2.
Yes (Without CONSULT-II)>>GO TO 3.
No >> GO TO 4.
2.CHECK OVERALL FUNCTION
With CONSULT-II
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode with
CONSULT-II.
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-II
1. Let engine idle.
TER-
MI-
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NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
17
18
21
22R
LG
G
SBIgnition 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 idle0 - 0.3V
[Engine is running]
•Warm-up condition
• Engine speed: 2,500 rpm0.2 - 0.5V
PBIA9265J
PBIA9266J
PBIB0133E

EC-536
< SERVICE INFORMATION >
IGNITION SIGNAL
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
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-II or tester.
OK or NG
OK >> GO TO 5.
NG >> Go to EC-137
.
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-II 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.
PBIA9567J
PBIA9265J
Voltage: Battery voltage
PBIA9575J
PBIB3329E
Voltage: Battery voltage
PBIB0624E