Nissan Almera Tino V10. Instruction — part 440
EC-586
[QG (WITHOUT EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
2.
Make sure that monitoring sensor has changed by MI blinking as follows.
How to Erase Diagnostic Test Mode II (Self-diagnostic Results)
1.
Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to
EC-585, "How to Set Diagnostic
Test Mode II (Self-diagnostic Results)"
.
2.
Fully depress the accelerator pedal and keep it for more than 10 seconds.
The emission-related diagnostic information has been erased from the backup memory in the ECM.
3.
Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.
DIAGNOSTIC TEST MODE I — BULB CHECK
In this mode, the MI on the instrument panel should stay ON. If it remains OFF, check the bulb. Refer to
“WARNING LAMPS”, EL-115 or see
.
DIAGNOSTIC TEST MODE I — MALFUNCTION WARNING
●
These DTC numbers are clarified in Diagnostic Test Mode II (SELF-DIAGNOSTIC RESULTS)
DIAGNOSTIC TEST MODE II — SELF-DIAGNOSTIC RESULTS
In this mode, the DTC and 1st trip DTC are indicated by the number of blinks of the MI as shown below.
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 illumi-
nates in diagnostic test mode II (SELF-DIAGNOSTIC RESULTS), it is a DTC; if two or more codes are dis-
played, they may be either DTCs or 1st trip DTCs. DTC No. is same as that of 1st trip DTC. These unidentified
codes can be identified by using the CONSULT-II. A DTC will be used as an example for how to read a code.
PBIB0093E
MI
Condition
ON
When the malfunction is detected.
OFF
No malfunction.
PBIA3905E
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-587
[QG (WITHOUT EURO-OBD)]
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A particular trouble code can be identified by the number of four-digit numeral flashes. The “zero” is indicated
by the number of ten flashes. The length of time the 1,000th-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 later
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 “0000” refers to no
malfunction. (See
)
How to Erase Diagnostic Test Mode II (Self-diagnostic Results)
The DTC can be erased from the back up memory in the ECM by depressing accelerator pedal. Refer to
585, "HOW TO SWITCH DIAGNOSTIC TEST MODE"
.
●
If the battery is disconnected, the DTC will be lost from the backup memory after approx 24 hours.
●
Be careful not to erase the stored memory before starting trouble diagnoses.
DIAGNOSTIC TEST MODE II — HEATED OXYGEN SENSOR 1 MONITOR
In this mode, the MI displays the condition of the fuel mixture (lean or rich) which is monitored by the heated
oxygen sensor 1.
*: Maintains conditions just before switching to open loop.
To check the heated oxygen sensor 1 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.
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
EC-588
[QG (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
PFP:00004
Trouble Diagnosis Introduction
EBS00QV6
INTRODUCTION
The engine has an ECM to control major systems such as fuel con-
trol, ignition control, idle air control system, etc. The ECM accepts
input signals from sensors and instantly drives actuators. It is essen-
tial that both input and output signals are proper and stable. At the
same time, it is important that there are no malfunctions such as vac-
uum leaks, fouled spark plugs, or other malfunctions with the engine.
It is much more difficult to diagnose a incident that occurs intermit-
tently rather than continuously. Most intermittent incidents are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only may not find the cause of the incidents. A road
test with CONSULT-II or a circuit tester connected should be per-
formed. Follow the “Work Flow” on
.
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “Diagnostic Worksheet” like the exam-
ple on
should be used.
Start your diagnosis by looking for “conventional” malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.
MEF036D
SEF233G
SEF234G
TROUBLE DIAGNOSIS
EC-589
[QG (WITHOUT EURO-OBD)]
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WORK FLOW
Flow Chart
*1
If time data of “SELF-DIAG
RESULTS” is other than “0” or “[1t]”,
perform
NOSIS FOR INTERMITTENT INCI-
DENT"
.
*2
If time data of “SELF-DIAG
RESULTS” is other than “0” or “[1t]”,
perform
NOSIS FOR INTERMITTENT INCI-
DENT"
.
*3
If the on board diagnostic system
cannot be performed, check main
power supply and ground circuit.
Refer to
.
*4
If the incident cannot be verified, per-
form
SIS FOR INTERMITTENT
INCIDENT"
.
*5
EC-640, "TROUBLE DIAGNOSIS -
SPECIFICATION VALUE"
MBIB0178E
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