Nissan Note — обзор системы бортовой диагностики OBD: работа и функции [61/1872]

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Nissan Note [61/1872] When 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 ec 47 two trip detection logic
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-61
[CR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
*: 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.
OBD System Operation Chart
BBS002U0
RELATIONSHIP BETWEEN MI, 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 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 EC-47, "
TwoTripDetection
Logic" .
The MI will go off after the vehicle is driven 3 times (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)
without the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and
FuelInjectionSystem,theDTCandfreezeframedatawillbestoreduntilthevehicleisdriven80times
(driving pattern C) without the same malfunction recurring. The “TIME” in “SELF-DIAGNOSTIC
RESULTS” mode of CONSULT-II will count the number of times the vehicle is driven.
The 1st trip DTC is not displayed when the self-diagnosis results in OK for the 2nd trip.
SUMMARY CHART
For details about patterns “B” and C” under “Fuel Injection System” and “Misfire”, see EC-63 .
For details about patterns “A” and B” under “Other”, see EC-65
.
*1: Clear timing is at the moment OK is detected.
*2: Clear timing is when the same malfunction is detected in the 2nd trip.
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(patternC),*
1
1 (pattern B)
1st Trip Freeze Frame Data
(clear)
*
1
,*
2
*
1
,*
2
1 (pattern B)

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Узнайте, как работает система бортовой диагностики OBD, включая проверку датчиков и хранение данных о неисправностях. Полезные советы и рекомендации.

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