1999 NISSAN PRIMERA Electronic Repair Manual

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Page 489 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual 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
(

Page 490 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual How to Switch Diagnostic Test ModesNCEC0032S02
*1: EC-QG-354
*2: EC-QG-46*3: EC-QG-354 *4: EC-QG-81
SEF951WA
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONQG16I18DE
Malfunction Indicator (MI) (Contd)
EC-48

Page 491 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Diagnostic Test Mode I Ð Bulb CheckNCEC0032S03In this mode, the MI on the instrument panel should stay ON. If it remains OFF, check the MI bulb. Refer to
EL section (ªWARNING LAMPSº) or see EC-QG-3

Diagnostic Test Mode I Ð Bulb CheckNCEC0032S03In this mode, the MI on the instrument panel should stay ON. If it remains OFF, check the MI bulb. Refer to
EL section (ªWARNING LAMPSº) or see EC-QG-354.
Diagnostic Test Mode I Ð Malfunction WarningNCEC0032S04
MI Condition
ON When the malfunction is detected or the ECM's CPU is malfunctioning.
OFF No malfunction.
IThese DTC numbers are clarified in Diagnostic Test Mode II (SELF-DIAGNOSTIC RESULTS).
Diagnostic Test Mode II Ð Self-diagnostic ResultsNCEC0032S05In this mode, the DTC and 1st trip DTC are indicated by the number of blinks of the MI.
The DTC and 1st trip DTC are displayed at the same time. If the MI does not illuminate in diagnostic test mode
I (Malfunction warning), all displayed items are 1st trip DTCs. If only one code is displayed when the MI illu-
minates in diagnostic test mode II (SELF-DIAGNOSTIC RESULTS), it is a DTC; if two or more codes are
displayed, they may be either DTCs or 1st trip DTCs. DTC No. is same as that of 1st trip DTC. These uni-
dentified codes can be identified by using the CONSULT-II or GST. A DTC will be used as an example for how
to read a code.
A particular trouble code can be identified by the number of four-digit numeral flashes. The ªzeroº is indicated
by the number of ten flashes. The length of time the 1000th-digit numeral flashes on and off is 1.2 seconds
consisting of an ON (0.6-second)-OFF (0.6-second) cycle.
The 100th-digit numeral and lower digit numerals consist of a 0.3-second ON and 0.3-second OFF cycle.
A change from one digit numeral to another occurs at an interval of 1.0 second OFF. In other words, the lat-
ter numeral appears on the display 1.3 seconds after the former numeral has disappeared.
A change from one trouble code to another occurs at an interval of 1.8 second off.
In this way, all the detected malfunctions are classified by their DTC numbers. The DTC ª0000º refers to no
malfunction. (See TROUBLE DIAGNOSIS Ð INDEX, EC-QG-6.)
How to Erase Diagnostic Test Mode II (Self-diagnostic results)
NCEC0032S0501The DTC can be erased from the backup memory in the ECM when the diagnostic test mode is changed from
Diagnostic Test Mode II to Diagnostic Test Mode I. (Refer to ªHOW TO SWITCH DIAGNOSTIC TEST
MODESº.)
IIf the battery is disconnected, the DTC will be lost from the backup memory after approx. 24 hours.
IBe careful not to erase the stored memory before starting trouble diagnoses.
SEF952W
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONQG16I18DE
Malfunction Indicator (MI) (Cont'd)
EC-49

Page 492 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Diagnostic Test Mode II Ð Heated Oxygen Sensor (Front) MonitorNCEC0032S06In this mode, the MI displays the condition of the fuel mixture (lean or rich) which is monitored by the heated
oxygen sensor

Diagnostic Test Mode II Ð Heated Oxygen Sensor (Front) 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-QG-36.
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-QG-52.
For details about patterns ªAº and ªBº under ªExceptº, see EC-QG-54.
*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 DESCRIPTIONQG16I18DE
Malfunction Indicator (MI) (Cont'd)
EC-50

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NISSAN PRIMERA 1999 Electronic Repair Manual RELATIONSHIP BETWEEN MI, DTC, 1ST TRIP DTC AND DRIVING PATTERNS FOR
ªMISFIREº <EXHAUST QUALITY DETERIORATION>, ªFUEL INJECTION SYSTEMº
NCEC0033S03
*1: When the same malfunction is
detected in two

Page 494 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual EXPLANATION FOR DRIVING PATTERNS FOR ªMISFIRE <EXHAUST QUALITY
DETERIORATION>º, ªFUEL INJECTION SYSTEMº
NCEC0033S04Driving Pattern BNCEC0033S0401Driving pattern B means the vehicle operation as fo

Page 495 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual RELATIONSHIP BETWEEN MI, DTC, 1ST TRIP DTC AND DRIVING PATTERNS EXCEPTFOR
ªMISFIRE <EXHAUST QUALITY DETERIORATION>º, ªFUEL INJECTION SYSTEMº
NCEC0033S05
*1: When the same malfunction is
detected i

Page 496 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual EXPLANATION FOR DRIVING PATTERNS EXCEPTFOR ªMISFIRE <EXHAUST QUALITY
DETERIORATION>º, ªFUEL INJECTION SYSTEMº
NCEC0033S06Driving Pattern ANCEC0033S0601
IThe A counter will be cleared when the malf

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