check engine NISSAN TEANA 2003 Service Manual

EC-680
[VQ]
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Diagnostic ProcedureBBS0056E
1. CHECK OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect the EVAP purge hose connected to the EVAP canister.
3. Turn ignition switch ON.
4. Select “PURG VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II.
5. Start engine and let it idle.
6. Change the valve opening percentage with touching “Qu” or
“Qd” on CONSULT-II screen, and check for vacuum existence at
the EVAP purge hose under the following conditions.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect the EVAP purge hose connected to the EVAP canister.
3. Start engine and let it idle for at least 100 seconds.
4. Check for vacuum existence at the EVAP purge hose under the
following conditions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK EVAP CANISTER
Refer to EC-369, "
Component Inspection" .
OK or NG
OK >>INSPECTION END
NG >> Replace EVAP canister.
PBIB0569E
Conditions
(PURG VOL CONT/V)Vacuum
0% Should not exist
100% Should exist
PBIB2124E
Conditions Vacuum
At idle Should not exist
Engine speed: About 2,000 rpm Should exist
PBIB2124E

EC-682
[VQ]
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

6. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIR-
CUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 45 and EVAP canister purge volume control solenoid
valve terminal 2. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK (With CONSULT-II)>>GO TO 8.
OK (Without CONSULT-II)>>GO TO 9.
NG >> GO TO 7.
7. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F1, F251

Harness for open or short between EVAP canister purge volume control solenoid valve and ECM.
>> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-II
1. Reconnect all harness connectors disconnected.
2. Start engine.
3. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II. Check that engine speed varies according to the
valve opening.
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
9. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-683, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace EVAP canister purge volume control solenoid valve.
10. CHECK INTERMITTENT INCIDENT
Refer to EC-450, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.
PBIB0147E

EC-686
[VQ]
FUEL INJECTOR

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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic ProcedureBBS0056M
1. INSPECTION START
Turn ignition switch to START.
Is any cylinder ignited?
Ye s o r N o
Yes (With CONSULT-II)>>GO TO 2.
Yes (Without CONSULT-II)>>GO TO 3.
No >> GO TO 7.
2. CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with
CONSULT-II.
3. Make sure that each circuit produces a momentary engine
speed drop.
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
21
22
23
40
41
42L/W
R/Y
R/B
P/B
LG/R
R/WFuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1
Fuel injector No. 6
Fuel injector No. 4
Fuel injector No. 2[Engine is running]

Warm-up condition

Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idleBATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Warm-up condition

Engine speed: 2,000 rpmBATTERY VOLTAGE
(11 - 14V)
SEC984C
SEC985C
PBIB0133E

FUEL INJECTOR
EC-687
[VQ]
C
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MA
EC

3. CHECK FUNCTION OF FUEL INJECTOR-I
Without CONSULT-II
1. Stop engine.
2. Disconnect harness connector F1, F251.
3. Turn ignition switch ON.
4. Check voltage between harness connector F1 terminal 5 and
ground with CONSULT-II or tester.
5. Turn ignition switch OFF.
6. Disconnect ECM harness connector.
7. Check harness continuity between harness connector F1 and
ECM as follows.
Refer to Wiring Diagram.
8. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M52, F103

Fuse block (J/B) connector M1

10A fuse

Harness for open or short between harness connector F1 and fuse

Harness for open or short between harness connector F251 and fuel injector
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK FUNCTION OF FUEL INJECTOR-II
Provide battery voltage between harness connector F251 as follows
and then interrupt it. Listen to each fuel injector operating sound.
OK or NG
OK >> GO TO 6.
NG >> GO TO 7.Voltage: Battery voltage
CylinderHarness connector F1
terminalECM terminal
1623
3222
5121
Continuity should exist.
PBIB2323E
CylinderHarness connector F251 terminal
(+) (–)
156
352
551
Operating sound should exist.PBIB2324E

EC-688
[VQ]
FUEL INJECTOR

6. CHECK FUNCTION OF FUEL INJECTOR-III
1. Reconnect all harness connector disconnected.
2. Start engine.
3. Listen to fuel injectors No. 2, No. 4, No.6 operating sound.
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7. CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
3. Turn ignition switch ON.
4. Check voltage between fuel injector terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M52, F103

Harness connectors F1, F251

Fuse block (J/B) connector M1

10A fuse

Harness for open or short between fuel injector and fuse
>> Repair harness or connectors. Clicking noise should exist.
PBIB1986E
Voltage: Battery voltage
PBIB2182E
PBIB0582E

EC-692
[VQ]
FUEL PUMP

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.
Diagnostic ProcedureBBS0056S
1. CHECK OVERALL FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose with two fingers.
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 113 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
113 B/R Fuel pump relay[Ignition switch: ON]

For 1 second after turning ignition switch
ON.
[Engine is running]0 - 1.5V
[Ignition switch: ON]

More than 1 second after turning ignition
switch ON.BATTERY VOLTAGE
(11 - 14V)
Fuel pressure pulsation should be felt on the fuel feed
hose for 1 second after ignition switch is turned ON.
PBIB2125E
Voltage: Battery voltage
PBIB1187E

FUEL PUMP
EC-695
[VQ]
C
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MA
EC

12. CHECK FUEL PUMP
Refer to EC-695, "
Component Inspection" .
OK or NG
OK >> GO TO 13.
NG >> Replace fuel pump.
13. CHECK INTERMITTENT INCIDENT
Refer to EC-450, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-17, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness or connectors.
Component InspectionBBS0056T
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.
CONDENSER
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Check resistance between condenser terminals 1 and 2.
Removal and InstallationBBS0056U
FUEL PUMP
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" . Resistance: 0.2 - 5.0Ω [at 25°C (77°F)]
SEC918C
Resistance: Above 1 MΩ [at 25°C (77°F)]
PBIB0794E

EC-700
[VQ]
HO2S1

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 ECMs transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic ProcedureBBS0055R
1. INSPECTION START
Do you have CONSULT-II?
Ye s o r N o
Yes >> GO TO 2.
No >> GO TO 3.
2. CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “HO2S1 MNTR (B1)” and “HO2S1 MNTR (B2)” in “DATA
MONITOR” mode with CONSULT-II.
3. Keep the engine speed at 2,000 rpm under no load, and make
sure that the monitors fluctuate between LEAN and RICH more
than 5 times in 10 seconds.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
24 R/LHeated oxygen sensor 1
heater (Bank 2)[Engine is running]

Warm-up condition

Engine speed: Below 3,600 rpmApproximately 8V
[Engine is running]

Warm-up condition

Engine speed: Above 3,600 rpmBATTERY VOLTAGE
(11 - 14V)
16 WHeated oxygen sensor 1
(Bank 2)[Engine is running]

Warm-up condition

Engine speed: 2,000 rpm0 - Approximately 1.0V
(Periodically change)
78 BSensor ground
(Heated oxygen sensor)[Engine is running]

Warm-up condition

Idle speedApproximately 0V
PBIB0519E
1 time: RICH → LEAN → RICH
2 time: RICH → LEAN → RICH → LEAN → RICH
PBIB0120E

HO2S1
EC-701
[VQ]
C
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EC

3. CHECK OVERALL FUNCTION
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Stop engine and wait at least 10 seconds.
3. Set ECM in “DIAGNOSTIC TEST MODE II — HEATED OXYGEN SENSOR 1 MONITOR”.
Refer to EC-378, "
How to Set Diagnostic Test Mode II (Heated Oxygen Sensor 1 Monitor)" .
4. Keep the engine speed at 2,000 rpm under no load, and make
sure that the MI comes ON more than 5 times in 10 seconds.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
4. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body.
Refer to EC-457, "
Ground Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace ground connections.
5. RETIGHTEN HEATED OXYGEN SENSOR 1
Loosen and retighten heated oxygen sensor 1.
>> GO TO 6.
SAT652J
PBIB2160E
Tightening torque: 50 N·m (5.1 kg-m, 37 ft-lb)
PBIB2144E

EC-702
[VQ]
HO2S1

6. CHECK FOR EXHAUST GAS LEAK
1. Start engine and run it at idle.
2. Listen for an exhaust gas leak before three way catalyst (manifold).
OK or NG
OK >> GO TO 7.
NG >> Repair or replace.
7. CHECK FOR INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace.
8. CHECK HO2S1 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect heated oxygen sensor 1 harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between ECM terminal 78 and HO2S1 terminal 4.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
SEC502D
Continuity should exist.
PBIB2468E