Nissan Frontier D22. Manual - part 239
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-59
[KA24DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
●
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 59 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 59 and ground is lower than 1.4V).
●
The engine is started at the tank fuel temperature of warmer than 0
°C (32°F) (where the voltage
between the ECM terminal 60 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 below at least 10 times.
–
During acceleration, hold the accelerator pedal as steady as possible.
3.
Repeat steps 1 and 2 until the EGR system SRT is set.
*3: Checking the vehicle speed with GST is advised.
Suggested Transmission Gear Position for A/T Models
Set the selector lever in the “D” position with the overdrive switch
turned ON.
Suggested upshift speeds for M/T models
Shown below are suggested vehicle speeds for shifting into a higher
gear. These suggestions relate to fuel economy and vehicle perfor-
mance. Actual upshift speeds will vary according to road conditions,
the weather and individual driving habits.
SEF414S
For normal acceleration in low altitude areas [less than 1,219 m
(4,000 ft)]:
For quick acceleration in low altitude
areas and high altitude areas [over
1,219 m (4,000 ft)]:
Gear change
ACCEL shift point km/h (MPH)
CRUISE shift point km/h (MPH)
km/h (MPH)
1st to 2nd
21 (13)
21 (13)
24 (15)