2009 NISSAN LATIO Service Repair Manual

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Page 2425 of 4331

NISSAN LATIO 2009 Service Repair Manual ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-1069
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
F
G H
I
J
K L
M A EC
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4. Touch "ERASE". (The DTC in the ECM will be erased.)
With GST
NOTE:
If the ignition switc

Page 2426 of 4331

NISSAN LATIO 2009 Service Repair Manual Emission-
related Diagnostic Information " .
HOW TO SWITCH DIAGNOSTIC TEST MODE
NOTE:
• It is better to count the ti me accurately with a clock.
• It is impossible to switch the di agnostic mode w

Page 2427 of 4331

NISSAN LATIO 2009 Service Repair Manual ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-1071
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
F
G H
I
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M A EC
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ECM has entered to Diagnostic Test Mode II (Self-diagnostic results).
How to Erase Diagnosti

Page 2428 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-1072< SERVICE INFOMATION >
[MR TYPE 2]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
tified codes can be identified by using the CONSULT-II I or GST. A DTC will be used as an example for how to
read a code.
A p

EC-1072< SERVICE INFOMATION >
[MR TYPE 2]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
tified codes can be identified by using the CONSULT-II I 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 “zero” is indicated
by the number of ten flashes. The “A” is indicated by the number of eleven flash. 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 numer als 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 occu rs at an interval of 1.8-second OFF.
In this way, all the detected malfunctions are classi fied by their DTC numbers. The DTC 0000 refers to no mal-
function. (See EC-1015 )
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 "How to Erase Diagnostic Test Mode II (Self-diagnostic Results)".
• If the battery is disconnected, the DTC will be lost from the backup memory within 24 hours.
• Be careful not to erase the stored memo ry before starting trouble diagnoses.
OBD System Operation Chart INFOID:0000000004499928
RELATIONSHIP BETWEEN MIL, 1ST TRIP DTC, DTC, AND DETECTABLE ITEMS
• When 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.
• When the same malfunction is detected in two consec utive trips, the DTC and the freeze frame data are
stored in the ECM memory, and the MIL will come on. For details, refer to EC-1051, " Two Trip Detection
Logic " .
• The MIL will go off after the vehicle is driven 3 time s (driving pattern B) 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.
• The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (driving pattern A) with-
out the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and Fuel Injec-
tion System, the DTC and freez e frame data will be stored until the vehicle is driven 80 times (driving pattern PBIB3005E

Page 2429 of 4331

NISSAN LATIO 2009 Service Repair Manual EC
NP
O
C) without the same malfunction recurring. The “TIM
E” in “SELF-DIAGNOSTIC RESULTS” mode of CON-
SULT-III will count the number of times the vehicle is driven.
• The 1s

Page 2430 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-1074< SERVICE INFOMATION >
[MR TYPE 2]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EXPLANATION FOR DRIVING PATTERNS FOR “M ISFIRE <EXHAUST QUALITY DETERIORA-
TION>”, “FUEL INJECTION SYSTEM”
<D

Page 2431 of 4331

NISSAN LATIO 2009 Service Repair Manual EC
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All components and systems should be monitored at least once by the OBD system.
• The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.
•

Page 2432 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-1076< SERVICE INFOMATION >
[MR TYPE 2]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EXPLANATION FOR DRIVING PATTERNS EXCEPT FOR “MISFIRE <EXHAUST QUALITY DETE-
RIORATION>”, “FUEL INJECTION SYSTEM” *1:

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