ECO mode NISSAN TEANA 2003 Service Manual

DTC P2138 APP SENSOR
EC-653
[VQ]
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DTC Confirmation ProcedureBBS00552
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-655, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine and let it idle for 1 second.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go to EC-655, "
Diagnostic Procedure" .
SEF058Y

EC-674
[VQ]
ELECTRONIC CONTROLLED ENGINE MOUNT

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 ProcedureBBS0056Y
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. Turn ignition switch ON.
2. Select “ENGINE MOUNTING” in “ACTIVE TEST” mode with
CONSULT-II and touch “ON/OFF” on the CONSULT-II screen.
3. Check that the motor operating sound is heard from front elec-
tronic controlled engine mount and rear electric controlled
engine mount for about 0.5 seconds according to the switching
condition of “ENGINE MOUNTING”.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
3. CHECK OVERALL FUNCTION
Without CONSULT-II
1. Make sure that gear position is P or N.
2. Start engine and let it idle.
3. Change the engine speed from idle to more than 1,000 rpm and then return to idle (with vehicle stopped).
4. Check that the motor operating sound is heard from front electronic controlled engine mount and rear
electronic controlled engine mount for about 0.5 seconds when changing engine speed.
It is better to hear the operating sound around the left side front wheel house.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
8W/LElectronic controlled engine
mount-1[Engine is running]

Idle speed (with vehicle stopped)0 - 3.0V
[Engine is running]

Except above conditionsBATTERY VOLTAGE
(11 - 14V)
9 O/BElectronic controlled engine
mount-2[Engine is running]

Idle speed (with vehicle stopped)BATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Except above conditions0 - 3.0V
SEC237C

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-690
[VQ]
FUEL PUMP

FUEL PUMPPFP:17042
DescriptionBBS0056P
SYSTEM DESCRIPTION
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for 1 second after the ignition switch is turned ON to improve engine start-
ability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows that
the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when the
ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging,
thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump
relay, which in turn controls the fuel pump.
COMPONENT DESCRIPTION
A turbine type design fuel pump is used in the fuel tank.
CONSULT-II Reference Value in Data Monitor ModeBBS0056Q
Specification data are reference values.
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
Fuel pump control Fuel pump relay
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and crankingOperates.
When engine is stoppedStops in 1.5 seconds.
Except as shown aboveSto ps.
PBIB2259E
MONITOR ITEM CONDITION SPECIFICATION
FUEL PUMP RLY

For 1 second after turning ignition switch ON

Engine running or crankingON

Except above conditions OFF

EC-696
[VQ]
HO2S1

HO2S1PFP:22690
Component DescriptionBBS0055O
The heated oxygen sensor 1 is placed into the exhaust manifold. It
detects the amount of oxygen in the exhaust gas compared to the
outside air. The heated oxygen sensor 1 has a closed-end tube
made of ceramic zirconia. The zirconia generates voltage from
approximately 1V in richer conditions to 0V in leaner conditions. The
heated oxygen sensor 1 signal is sent to the ECM. The ECM adjusts
the injection pulse duration to achieve the ideal air-fuel ratio. The
ideal air-fuel ratio occurs near the radical change from 1 to 0V.
CONSULT-II Reference Value in Data Monitor ModeBBS0055P
Specification data are reference values.
SEF463R
SEF288D
MONITOR ITEM CONDITION SPECIFICATION
HO2S1 (B1)
HO2S1 (B2)

Engine: After warming upMaintaining engine speed at 2,000
rpm0 - 0.3V ←→ Approx. 0.6 -
1.0V
HO2S1 MNTR (B1)
HO2S1 MNTR (B2)LEAN ←→ RICH
Changes more than 5 times
during 10 seconds.

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]
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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-704
[VQ]
HO2S1

Component InspectionBBS0055S
HEATED OXYGEN SENSOR 1
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “MANU TRIG” and adjust “TRIGGER POINT” to 100% in “DATA MONITOR” mode with CONSULT-
II.
3. Select “HO2S1 (B1)/(B2)” and “HO2S1 MNTR (B1)/(B2)”.
4. Hold engine speed at 2,000 rpm under no load during the following steps.
5. Touch “RECORD” on CONSULT-II screen.
6. Check the following.

“HO2S1 MNTR (B1)/(B2)” in “DATA MONITOR” mode
changes from “RICH” to “LEAN” to “RICH” more than 5 times
in 10 seconds.
5 times (cycles) are counted as shown in the figure.

“HO2S1 (B1)/(B2)” voltage goes above 0.6V at least once.

“HO2S1 (B1)/(B2)” voltage goes below 0.3V at least once.

“HO2S1 (B1)/(B2)” voltage never exceeds 1.0V.
CAUTION:

Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.

Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner and approved anti-seize lubricant.
SEF646Y
SEF647Y
SEF648Y

EC-720
[VQ]
HO2S2

5. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal and HO2S2 terminal as follows.
Refer to Wiring Diagram.
2. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
3. Also check harness for 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 HEATED OXYGEN SENSOR 2
Refer to EC-720, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace malfunctioning heated oxygen sensor 2.
7. CHECK INTERMITTENT INCIDENT
Refer to EC-450, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionBBS0055Y
HEATED OXYGEN SENSOR 2
With CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine and warm it up to the normal operating tempera-
ture.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and
4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
Terminals
Bank
ECM Sensor
74 1 1
55 1 2
Continuity should exist.
Terminals
Bank
ECM Sensor
74 1 1
55 1 2
Continuity should not exist.
SEF174Y