Nissan Primera P11. Manual — part 211
10
PREPARATION FOR “CO” % CHECK
With CONSULT-II
1. Connect ECM harness connector to ECM.
2. Connect battery ground cable.
3. Select “ENGINE COOLANT TEMP” in “ACTIVE TEST” mode.
4. Set “COOLANT TEMP” to 5°C (41°F) by touching “Qu” and “Qd” and “UP”, “DOWN”.
NEF061A
Without CONSULT-II
1. Connect ECM harness connector to ECM.
2. Disconnect engine coolant temperature sensor harness connector.
3. Connect a resistor (4.4 k
Ω
) between terminals of engine coolant temperature sensor harness connector.
SEF053RA
4. Connect battery ground cable.
©
GO TO 11.
Engine coolant
temperature sensor
harness connector
4.4 k
Ω
resistor
BASIC SERVICE PROCEDURE
SR20DE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-43
11
CHECK “CO” %
1. Start engine and warm it up until engine coolant temperature indicator points to middle of gauge.
(Be sure to start engine after setting “COOLANT TEMP” or installing a 4.4 k
Ω
resistor.)
SEF935W
2. Rev engine two or three times under no-load, then run engine at idle speed.
SEF978U
3. Check “CO”%.
Idle CO: Less than 11% and engine runs smoothly.
4.
Without CONSULT-II
After checking CO%, stop engine and
a. Disconnect the resistor from terminals of engine coolant temperature sensor harness connector.
b. Connect engine coolant temperature sensor harness connector to engine coolant temperature sensor.
OK or NG
OK
©
GO TO 12.
NG
©
GO TO 13.
12
CHECK HEATED OXYGEN SENSOR 1 (FRONT) SIGNAL
With CONSULT-II
1. Replace heated oxygen sensor 1 (front).
2. See “HO2S1 MNTR (B1)” in “DATA MONITOR” mode.
3. Maintain engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature.). Check that the monitor fluctu-
ates between “LEAN” and “RICH” more than five times during 10 seconds.
1 cycle: RICH
→
LEAN
→
RICH
2 cycles: RICH
→
LEAN
→
RICH
→
LEAN
→
RICH
Without CONSULT-II
1. Replace heated oxygen sensor 1 (front).
2. Set “Heated oxygen sensor 1 (front) monitor” in the Diagnostic Test Mode II.
(See page EC-SR-61.)
3. Maintain engine at 2,000 rpm under no-load. Check that the malfunction indicator goes on and off more than five times during 10 sec-
onds.
OK or NG
OK
©
GO TO 5. (With CONSULT-II)
GO TO 6. (Without CONSULT-II)
NG
©
GO TO 13.
BASIC SERVICE PROCEDURE
SR20DE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-44
13
DETECT MALFUNCTIONING PART
1. Connect heated oxygen sensor 1 (front) harness connector to heated oxygen sensor 1 (front).
2. Check fuel pressure regulator. Refer to EC-SR-32.
3. Check mass air flow sensor and its circuit.
Refer to EC-SR-120.
4. Check injector and its circuit.
Refer to EC-SR-302.
Clean or replace if necessary.
5. Check engine coolant temperature sensor and its circuit. Refer to EC-SR-132.
6. Check ECM function by substituting another known good ECM.
(ECM may be the cause of a problem, but this is rarely the case.)
©
GO TO 5. (With CONSULT-II)
GO TO 6. (Without CONSULT-II)
I
If a vehicle contains a part which is operating outside of
design specifications with no MI illumination, the part
shall not be replaced prior to emission testing unless it is
determined that the part has been tampered with or
abused in such a way that the diagnostic system cannot
reasonably be expected to detect the resulting malfunc-
tion.
BASIC SERVICE PROCEDURE
SR20DE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-45
Idle Air Volume Learning
NCEC0541
DESCRIPTION
NCEC0541S01
“Idle Air Volume Learning” is an operation to learn the idle air vol-
ume that keeps each engine within the specific range. It must be
performed under any of the following conditions:
I
Each time IACV-AAC valve, throttle body or ECM is replaced.
I
Idle speed or ignition timing is out of specification.
PRE-CONDITIONING
NCEC0541S04
Before performing “Idle Air Volume Learning”, make sure that all of
the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are
missed for even a moment.
I
Battery voltage: More than 12.9V (At idle)
I
Engine coolant temperature: 70 - 94°C (158 - 201°F)
I
PNP switch: ON
I
Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime running light systems, set
lighting switch to the 1st position to light only small lamps.
I
Cooling fan motor: Not operating
I
Steering wheel: Neutral (Straight-ahead position)
I
Vehicle speed: Stopped
I
Transmission : Warmed up
For CVT models with CONSULT-II, drive vehicle until “FLUID
TEMP SE” in “DATA MONITOR” mode of “CVT” system indi-
cates less than 0.9V.
For CVT models without CONSULT-II and M/T models, drive
vehicle for 10 minutes.
OPERATION PROCEDURE
NCEC0541S02
With CONSULT-II
NCEC0541S0201
1.
Start engine and warm it up to normal operating temperature.
2.
Check that all items listed under the topic “Pre-Conditioning”
(previously mentioned) are in good order.
3.
Turn ignition switch “OFF” and wait at least 9 seconds.
4.
Start the engine and allow it to idle for at least 28 seconds.
5.
Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.
6.
Touch “START” and wait 20 seconds.
7.
Make sure that “CMPLT” is displayed on CONSULT-II screen.
If “INCMP” is displayed, “Idle Air Volume Learning” will not be
carried out successfully. In this case, find the cause of the
problem by referring to the NOTE below.
8.
Rev up the engine two or three times. Make sure that idle
speed and ignition timing are within specifications.
ITEM
SPECIFICATION
Idle speed
750 ± 50rpm (in “P” or “N” position for CVT)
Ignition timing
15 ± 2° BTDC
SEF712X
SEF713X
SEF714X
BASIC SERVICE PROCEDURE
SR20DE
Idle Air Volume Learning
EC-46
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