Infiniti F50. Manual — part 355
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-61
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D
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EC
Driving Pattern
PBIB1053E
EC-62
ON BOARD DIAGNOSTIC (OBD) SYSTEM
●
The 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:
●
Sea level
●
Flat road
●
Ambient air temperature: 20 - 30
°
C (68 - 86
°
F)
●
Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30
°
C (68 - 86
°
F)], diag-
nosis may also be performed.
Pattern 1:
●
The engine is started at the engine coolant temperature of
−
10 to 35
°
C (14 to 95
°
F)
(where the voltage between the ECM terminal 121 and ground is 3.0 - 4.3V).
●
The engine must be operated at idle speed until the engine coolant temperature is greater than
70
°
C (158
°
F) (where the voltage between the ECM terminal 121 and ground is lower than 1.4V).
●
The engine is started at the fuel tank temperature of warmer than 0
°
C (32
°
F) (where the voltage
between the ECM terminal 92 and ground is less than 4.1V).
Pattern 2:
●
When steady-state driving is performed again even after it is interrupted, each diagnosis can be con-
ducted. In this case, the time required for diagnosis may be extended.
Pattern 3:
●
The driving pattern outlined in *2 must be repeated at least 3 times.
Pattern 4:
●
Tests are performed after the engine has been operated for at least 17 minutes.
●
The accelerator pedal must be held very steady during steady-state driving.
●
If the accelerator pedal is moved, the test must be conducted all over again.
*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: Operate the vehicle in the following driving pattern.
1.
Decelerate vehicle to 0 km/h (0 MPH) and let engine idle.
2.
Repeat driving pattern shown at right at least 10 times.
–
During acceleration, hold the accelerator pedal as steady as
possible.
*3: Checking the vehicle speed with GST is advised.
Suggested Transmission Gear Position
Set the selector lever in the “D” position.
TEST VALUE AND TEST LIMIT (GST ONLY — NOT APPLICABLE TO CONSULT-II)
The following is the information specified in Mode 6 of SAE J1979.
The test value is a parameter used to determine whether a system/circuit diagnostic test is “OK” or “NG” 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 (30 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.
SEF414S
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-63
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EC
×
: Applicable
—: Not applicable
HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION
How to Erase DTC
WIth CONSULT-II
The emission related diagnostic information in the ECM can be erased by selecting “ERASE” in the “SELF-
DIAG RESULTS” mode with CONSULT-II.
If DTCs are displayed for both ECM and TCM (Transmission control module), they need to be erased individu-
ally from the ECM and TCM (Transmission control module).
NOTE:
If the DTC is not for A/T related items (see
), skip steps 2 through 4.
1.
If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least
10 seconds and then turn it “ON” (engine stopped) again.
SRT item
Self-diagnostic test item
Test value (GST display)
Test limit
Application
TID
CID
CATALYST
Three way catalyst function (Bank 1)
01H
01H
Max.
×
02H
81H
Min.
×
Three way catalyst function (Bank 2)
03H
02H
Max.
×
04H
82H
Min.
×
EVAP SYSTEM
EVAP control system (Small leak)
05H
03H
Max.
×
EVAP control system purge flow monitoring
06H
83H
Min.
×
EVAP control system (Very small leak)
07H
03H
Max.
×
HO2S
Heated oxygen sensor 1 (Bank 1)
09H
04H
Max.
×
0AH
84H
Min.
×
0BH
04H
Max.
×
0CH
04H
Max.
×
0DH
04H
Max.
×
Heated oxygen sensor 1 (Bank 2)
11H
05H
Max.
×
12H
85H
Min.
×
13H
05H
Max.
×
14H
05H
Max.
×
15H
05H
Max.
×
Heated oxygen sensor 2 (Bank 1)
19H
86H
Min.
×
1AH
86H
Min.
×
1BH
06H
Max.
×
1CH
06H
Max.
×
Heated oxygen sensor 2 (Bank 2)
21H
87H
Min.
×
22H
87H
Min.
×
23H
07H
Max.
×
24H
07H
Max.
×
HO2S HTR
Heated oxygen sensor 1 heater (Bank 1)
29H
08H
Max.
×
2AH
88H
Min.
×
Heated oxygen sensor 1 heater (Bank 2)
2BH
09H
Max.
×
2CH
89H
Min.
×
Heated oxygen sensor 2 heater (Bank 1)
2DH
0AH
Max.
×
2EH
8AH
Min.
×
Heated oxygen sensor 2 heater (Bank 2)
2FH
0BH
Max.
×
30H
8BH
Min.
×
EC-64
ON BOARD DIAGNOSTIC (OBD) SYSTEM
2.
Turn CONSULT-II “ON” and touch “A/T”.
3.
Touch “SELF-DIAG RESULTS”.
4.
Touch “ERASE”. [The DTC in the TCM (Transmission control module) will be erased.] Then touch “BACK”
twice.
5.
Touch “ENGINE”.
6.
Touch “SELF-DIAG RESULTS”.
7.
Touch “ERASE”. (The DTC in the ECM will be erased.)
With GST
The emission related diagnostic information in the ECM can be erased by selecting Mode 4 with GST.
NOTE:
If the DTC is not for A/T related items (see
1.
If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least
10 seconds and then turn it “ON” (engine stopped) again.
2.
Perform
AT-40, "HOW TO ERASE DTC (WITH GST)"
. (The DTC in TCM will be erased.)
3.
Select Mode 4 with GST (Generic Scan Tool).
No Tools
NOTE:
If the DTC is not for A/T related items (see
1.
If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once.
Wait at least 10 seconds and then turn it “ON” (engine stopped) again.
2.
Perform
AT-41, "HOW TO ERASE DTC (NO TOOLS)"
. (The DTC in TCM will be erased.)
3.
Change the diagnostic test mode from Mode II to Mode I by depressing the accelerator pedal. Refer to
EC-66, "HOW TO SWITCH DIAGNOSTIC TEST MODE"
.
SEF823YA
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