check engine NISSAN PRIMERA 1999 Electronic Repair Manual

11 CHECK ªCOº %
1. Start engine and warm it up until engine coolant temperature indicator points to middle of gauge.
(Be sure to start engine after setting ªCOOLANT TEMPº or installing a 4.4 kWresistor.)
SEF935W2. Rev engine two or three times under no-load, then run engine at idle speed.
SEF978U3. Check ªCOº%.
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 ªHO2S1 MNTR (B1)º in ªDATA MONITORº 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 ªLEANº and ªRICHº 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 ªHeated oxygen sensor 1 (front) monitorº 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 PROCEDURESR20DE
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)
IIf 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 PROCEDURESR20DE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont'd)
EC-45

Idle Air Volume LearningNCEC0541DESCRIPTIONNCEC0541S01ªIdle Air Volume Learningº 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:
IEach time IACV-AAC valve, throttle body or ECM is replaced.
IIdle speed or ignition timing is out of specification.
PRE-CONDITIONINGNCEC0541S04Before performing ªIdle Air Volume Learningº, 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.
IBattery voltage: More than 12.9V (At idle)
IEngine coolant temperature: 70 - 94ÉC (158 - 201ÉF)
IPNP switch: ON
IElectric 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.
ICooling fan motor: Not operating
ISteering wheel: Neutral (Straight-ahead position)
IVehicle speed: Stopped
ITransmission : Warmed up
For CVT models with CONSULT-II, drive vehicle until ªFLUID
TEMP SEº in ªDATA MONITORº mode of ªCVTº system indi-
cates less than 0.9V.
For CVT models without CONSULT-II and M/T models, drive
vehicle for 10 minutes.
OPERATION PROCEDURENCEC0541S02With CONSULT-IINCEC0541S02011. Start engine and warm it up to normal operating temperature.
2. Check that all items listed under the topic ªPre-Conditioningº
(previously mentioned) are in good order.
3. Turn ignition switch ªOFFº and wait at least 9 seconds.
4. Start the engine and allow it to idle for at least 28 seconds.
5. Select ªIDLE AIR VOL LEARNº in ªWORK SUPPORTº mode.
6. Touch ªSTARTº and wait 20 seconds.
7. Make sure that ªCMPLTº is displayed on CONSULT-II screen.
If ªINCMPº is displayed, ªIdle Air Volume Learningº 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 speed750   50rpm (in ªPº or ªNº position for CVT)
Ignition timing15   2É BTDC
SEF712X
SEF713X
SEF714X
BASIC SERVICE PROCEDURESR20DE
Idle Air Volume Learning
EC-46

Without CONSULT-IINCEC0541S02021. Start engine and warm it up to normal operating temperature.
2. Check that all items listed under the topic ªPre-Conditioningº
(previously mentioned) are in good order.
3. Turn ignition switch ªOFFº and wait at least 9 seconds.
4. Start the engine and allow it to idle for at least 28 seconds.
5. Disconnect throttle position sensor harness connector (brown),
then re-connect it within 5 seconds. (CVT models only)
6. Wait 20 seconds.
7. Make sure that the idle speed is within specifications. If not, the
result will be incomplete. 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 speed750   50rpm (in ªPº or ªNº position for CVT)
Ignition timing15   2É BTDC
NOTE:
IIf idle air volume learning cannot be performed
successfully, proceed as follows:
a)Check the throttle valve is fully closed.
b)Check that downstream of throttle valve is free from air
leakage.
c)Adjust closed throttle position switch and reset memory.
(Refer to Basic Inspection, EC-SR-84.)
d)When the above three items check out OK, engine com-
ponent parts and their installation condition are question-
able. Check and eliminate the cause of the problem.
e) If any of the following conditions occur after the engine has
started, eliminate the cause of the problem and perform ªIdle
air volume learningº all over again:
IEngine stalls.
IErroneous idle.
IBlown fuses related to the IACV-AAC valve system.
SEF197X
Throttle bodyThrottle position
sensor harness
connector
Closed throttle position switch
harness connector (CVT models)
BASIC SERVICE PROCEDURESR20DE
Idle Air Volume Learning (Cont'd)
EC-47

IntroductionNCEC0029The ECM has an on board diagnostic system which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
Diagnostic Trouble Code (DTC) Mode 3 of ISO 15031-5
Freeze Frame data Mode 2 of ISO 15031-5
System Readiness Test (SRT) code Mode 1 of ISO 15031-5
1st Trip Diagnostic Trouble Code (1st Trip DTC) Mode 7 of ISO 15031-5
1st Trip Freeze Frame data
Test values and Test limits Mode 6 of ISO 15031-5
Calibration ID Mode 9 of ISO 15031-5
The above information can be checked using procedures listed in the table below.
X: Applicable Ð: Not applicable
DTC 1st trip DTCFreeze Frame
data1st trip Freeze
Frame dataSRT code Test value
ECM*3 X X*1ÐÐÐÐ
CONSULT-II*4XXXXXÐ
GST*4 X X*2 X Ð X X
*1: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
*2: 1st trip DTCs for self-diagnoses concerning SRT items cannot be shown on the GST display.
*3: In diagnostic test mode II (Self-diagnostic results), DTC is displayed on MI. DTC uses a set of four digit numbers.
*4: In SELF-DIAGNOSTIC RESULTS mode, DTC is displayed. DTC uses ªPº and a set of four digit numbers.
The malfunction indicator (MI) on the instrument panel lights up when the same malfunction is detected in two
consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to EC-SR-93.)
Two Trip Detection LogicNCEC0030When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in
the ECM memory. The MI will not light up at this stage <1st trip>.
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored
in the ECM memory, and the MI lights up. The MI lights up at the same time when the DTC is stored <2nd
trip>. The ªtripº in the ªTwo Trip Detection Logicº means a driving mode in which self-diagnosis is performed
during vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MI,
and store DTC and Freeze Frame data, even in the 1st trip, as shown below.
X: Applicable Ð: Not applicable
ItemsMI DTC 1st trip DTC
1st trip 2nd trip
1st trip
displaying2nd trip
displaying1st trip
displaying2nd trip
displaying
BlinkingLighting
upBlinkingLighting
up
Misfire (Possible three way
catalyst damage)
Ð DTC: P0300 - P0304 (0300
- 0304) is being detectedXÐÐÐXÐXÐ
Misfire (Possible three way
catalyst damage)
Ð DTC: P0300 - P0304 (0300
- 0304) has been detectedÐÐXÐÐXÐÐ
Fail-safe items (Refer to EC-
SR-93.)Ð X Ð Ð X*1 Ð X*1 Ð
Except above Ð ÐÐXÐX X X
*1: Except ªECMº.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONSR20DE
Introduction
EC-48

IThe time required for each diagnosis varies with road surface conditions, weather, altitude, individual driv-
ing habits, etc.
Zone A refers to the range where the time required, for the diagnosis under normal conditions*, is the
shortest. Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not
completed within zone A.
*: Normal conditions refer to the following:
þ Sea level
þ Flat road
þ Ambient air temperature: 20 - 30ÉC (68 - 86ÉF)
þ Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30ÉC (68 - 86ÉF)], diagnosis may
also be performed.
Pattern 1:
IThe engine is started at the engine coolant temperature of þ10 to 35ÉC (14 to 95ÉF) (where the volt-
age between the ECM terminals 70 and 58 is 3.0 - 4.3V).
IThe engine must be operated at idle speed until the engine coolant temperature is greater than 70ÉC
(158ÉF) (where the voltage between the ECM terminals 70 and 58 is lower than 1.4V).
Pattern 2:
IWhen steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.
In this case, the time required for diagnosis may be extended.
*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal
and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h
(56 MPH) again.
*2: Checking the vehicle speed with CONSULT-II or GST is advised.
Suggested transmission gear position for CVT models
Set the selector lever in the ªDº position with ªSPORTS MODE SWº ªOFFº or without ªMANUAL MODEº.
Suggested upshift speeds for M/T models
Shown below are suggested vehicle speeds for shifting into a higher gear. These suggestions relate to fuel
economy and vehicle performance. Actual upshift speeds will vary according to road conditions, the weather
and individual driving habits.
Gear changeACCEL shift point
km/h (MPH)
1st to 2nd 15 (9)
2nd to 3rd 35 (22)
3rd to 4th 50 (31)
4th to 5th 70 (43)
TEST VALUE AND TEST LIMIT (GST ONLY Ð NOT APPLICABLE TO CONSULT-II)NCEC0031S04The following is the information specified in Mode 6 of ISO 15031-5.
The test value is a parameter used to determine whether a system/circuit diagnostic test is ªOKº or ªNGº while
being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the
maximum or minimum value and is compared with the test value being monitored.
Items for which these data (test value and test limit) are displayed are the same as SRT code items (6 test
items).
These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be dis-
played on the GST screen.
X: Applicable Ð: Not applicable
SRT item Self-diagnostic test itemTest value (GST display)
Test limit Application
TID CID
CATALYST Three way catalyst function01H 01H Max. X
02H 81H Min. X
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONSR20DE
Emission-related Diagnostic Information (Cont'd)
EC-53

DESCRIPTIONNCEC0032
The MI is located on the instrument panel.
1. The MI will light up when the ignition switch is turned ON without the engine running. This is a bulb check.
IIf the MI does not light up, refer to EL section (ªWARNING LAMPSº) or see EC-SR-329.
2. When the engine is started, the MI should go off.
If the MI remains on, the on board diagnostic system has detected an engine system malfunction.
On Board Diagnostic System FunctionNCEC0032S01The on board diagnostic system has the following four functions.
Diagnostic Test Mode I
1. BULB CHECK:
This function checks the MI bulb for damage (blown, open circuit, etc.).
If the MI does not come on, check MI circuit and ECM test mode selector. (See the following page.)
2. MALFUNCTION WARNING:
This is a usual driving condition. When a malfunction is detected twice in two consecutive driving cycles
(two trip detection logic), the MI will light up to inform the driver that a malfunction has been detected.
The following malfunctions will light up or blink the MI in the 1st trip.
IªMisfire (Possible three way catalyst damage)º
IªClosed loop controlº
IFail-safe mode
Diagnostic Test Mode II
3. SELF-DIAGNOSTIC RESULTS:
This function allows DTCs and 1st trip DTCs to be read.
4. HEATED OXYGEN SENSOR 1 (FRONT) MONITOR:
This function allows the fuel mixture condition (lean or rich), monitored by heated oxygen sensor 1 (front),
to be read.
MI Flashing without DTC
NCEC0032S0101If the ECM is in Diagnostic Test Mode II, MI may flash when engine is running. In this case, check ECM test
mode following ªHOW TO SWITCH DIAGNOSTIC TEST MODESº.
How to switch the diagnostic test (function) modes, and details of the above functions are described later.
(Refer to EC-SR-61.)
Condition Diagnostic Test Mode I Diagnostic Test Mode II
Ignition switch in ªONº position
Engine stopped
BULB CHECK SELF-DIAGNOSTIC RESULTS
Engine running
MALFUNCTION WARNINGHEATED OXYGEN SENSOR 1
(FRONT) MONITOR
The following emission-related diagnostic information is cleared when the ECM memory is erased.
1) Diagnostic trouble codes
2) 1st trip diagnostic trouble codes
3) Freeze frame data
SAT652J
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONSR20DE
Malfunction Indicator (MI) (Cont'd)
EC-59

How to Switch Diagnostic Test ModesNCEC0032S02
*1: EC-SR-329
*2: EC-SR-59*3: EC-SR-329 *4: EC-SR-93SEF951W Turn ignition switch
ªONº (Do not start
engine.)
Mode I - MALFUNCTION
INDICATOR LAMP CHECK. *2
MI should come on.Check MI circuit. *1
Repair harness or connector.
Start engine.Diagnostic Test Mode I
Ð MALFUNCTION WARNING
Data link
connector
Connect CHK and IGN terminals
with a suitable harness.
MI should come off.Check MI and DDL circuits. *3
Check ECM fail-safe. *4Repair harness or connectors.
Wait at least 2 seconds.
Data link
connector
Disconnect the suitable harness
between CHK and IGN terminals.
DIAGNOSTIC TEST MODE II
Ð SELF-DIAGNOSTIC RESULTS
(ERASING ECM MEMORY) Start engineDiagnostic Test Mode II
Ð HEATED OXYGEN SENSOR 1 (FRONT)
MONITOR
Data link
connector
Wait at least 2 seconds.
lSwitching the modes is not possible when the
engine is running.
lWhen ignition switch is turned off during
diagnosis, power to ECM will drop after
approx. 9 seconds.
The diagnosis will automatically return to
Diagnostic Test Mode I.
Data link
connectorIf the suitable harness is disconnected
at this time, the diagnostic trouble code
will be erased from the backup memory
in the ECM. NG
NGNG
OK
NG
OK
OK
OK
OK
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONSR20DE
Malfunction Indicator (MI) (Cont'd)
EC-61

Diagnostic Test Mode II Ð Front Heated Oxygen Sensor MonitorNCEC0032S06In this mode, the MI displays the condition of the fuel mixture (lean or rich) which is monitored by the heated
oxygen sensor 1 (front).
MI Fuel mixture condition in the exhaust gas Air fuel ratio feedback control condition
ON Lean
Closed loop system
OFF Rich
*Remains ON or OFF Any condition Open loop system
*: Maintains conditions just before switching to open loop.
To check the heated oxygen sensor 1 (front) function, start engine in the Diagnostic Test Mode II and warm
it up until engine coolant temperature indicator points to the middle of the gauge.
Next run engine at about 2,000 rpm for about 2 minutes under no-load conditions. Then make sure that the
MI comes ON more than 5 times within 10 seconds with engine running at 2,000 rpm under no-load.
OBD System Operation ChartNCEC0033RELATIONSHIP BETWEEN MI, 1ST TRIP DTC, DTC, AND DETECTABLE ITEMSNCEC0033S01IWhen a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data are
stored in the ECM memory.
IWhen the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data are
stored in the ECM memory, and the MI will come on. For details, refer to ªTwo Trip Detection Logicº on
EC-SR-48.
IThe MI will go off after the vehicle is driven 3 times with no malfunction. The drive is counted only when
the recorded driving pattern is met (as stored in the ECM). If another malfunction occurs while counting,
the counter will reset.
IThe DTC and the freeze frame data will be stored until the vehicle is driven 40 times (driving pattern A)
without the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and Fuel
Injection System, the DTC and freeze frame data will be stored until the vehicle is driven 80 times (driv-
ing pattern C) without the same malfunction recurring. The ªTIMEº in ªSELF-DIAGNOSTIC RESULTSº
mode of CONSULT-II will count the number of times the vehicle is driven.
IThe 1st trip DTC is not displayed when the self-diagnosis results in ªOKº for the 2nd trip.
SUMMARY CHARTNCEC0033S02
Items Fuel Injection System Misfire Other
MI (goes off) 3 (pattern B) 3 (pattern B) 3 (pattern B)
DTC, Freeze Frame Data (no display) 80 (pattern C) 80 (pattern C) 40 (pattern A)
1st Trip DTC (clear) 1 (pattern C), *1 1 (pattern C), *1 1 (pattern B)
1st Trip Freeze Frame Data (clear) *1, *2 *1, *2 1 (pattern B)
For details about patterns ªBº and ªCº under ªFuel Injection Systemº and ªMisfireº, see EC-SR-65.
For details about patterns ªAº and ªBº under ªOtherº, see EC-SR-67.
*1: Clear timing is at the moment OK is detected.
*2: Clear timing is when the same malfunction is detected in the 2nd trip.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONSR20DE
Malfunction Indicator (MI) (Cont'd)
EC-63

ACTIVE TEST MODENCEC0034S07
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
FUEL INJEC-
TIONIEngine: Return to the original
trouble condition
IChange the amount of fuel injec-
tion using CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.IHarness and connector
IFuel injectors
IHeated oxygen sensor 1 (front)
IACV-AAC/V
OPENINGIEngine: After warming up, idle
the engine.
IChange the IACV-AAC valve
opening steps using CONSULT-
II.Engine speed changes according
to the opening steps.IHarness and connector
IIACV-AAC valve
ENG COOLANT
TEMPIEngine: Return to the original
trouble condition
IChange the engine coolant tem-
perature indication using CON-
SULT-II.If trouble symptom disappears, see
CHECK ITEM.IHarness and connector
IEngine coolant temperature sen-
sor
IFuel injectors
IGNITION TIM-
INGIEngine: Return to the original
trouble condition
ITiming light: Set
IRetard the ignition timing using
CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.IAdjust initial ignition timing
POWER BAL-
ANCEIEngine: After warming up, idle
the engine.
IAir conditioner switch ªOFFº
IShift lever ªNº
ICut off each injector signal one
at a time using CONSULT-II.Engine runs rough or dies.IHarness and connector
ICompression
IInjectors
IPower transistor
ISpark plugs
IIgnition coils
COOLING FANIIgnition switch: ON
ITurn the cooling fan ªONº and
ªOFFº using CONSULT-II.Cooling fan moves and stops.IHarness and connector
ICooling fan motor
FUEL PUMP
RELAYIIgnition switch: ON
(Engine stopped)
ITurn the fuel pump relay ªONº
and ªOFFº using CONSULT-II
and listen to operating sound.Fuel pump relay makes the operat-
ing sound.IHarness and connector
IFuel pump relay
SELF-LEARNING
CONTIIn this test, the coefficient of self-learning control mixture ratio returns to the original coefficient by touching
ªCLEARº on the screen.
PURG VOL
CONT/VIEngine: After warming up, idle
the engine.
IChange the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-II.Engine speed changes according
to the opening percent.IHarness and connector
IEVAP canister purge volume
control solenoid valve
IDLE AIR VOL
LEARNIIn this test, the idle air volume that keeps the engine within the specified range is memorized in ECM.
DTC CONFIRMATION MODENCEC0034S08SRT STATUS ModeNCEC0034S0801For details, refer to ªSYSTEM READINESS TEST (SRT) CODEº,
EC-SR-49.
SRT Work Support Mode
This mode enables a technician to drive a vehicle to set the SRT
while monitoring the SRT status.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONSR20DE
CONSULT-II (Cont'd)
EC-75