Nissan Frontier D22. Manual — part 239
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-59
[KA24DE]
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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)
EC-60
[KA24DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Suggested Maximum Speed in Each Gear
Downshift to a lower gear if the engine is not running smoothly, or if you need to accelerate.
Do not exceed the maximum suggested speed (shown below) in any gear. For level road driving, use the high-
est gear suggested for that speed. Always observe posted speed limits and drive according to the road condi-
tions to ensure safe operation. Do not over-rev the engine when shifting to a lower gear as it may cause
engine damage or loss of vehicle control.
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.
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.
2nd to 3rd
37 (23)
297(16)
40 (25)
3rd to 4th
53 (33)
43 (27)
64 (40)
4th to 5th
63 (39)
58 (36)
72 (45)
Gear
km/h (MPH)
2WD (AUTO mode)
1st
50 (30)
2nd
95 (60)
Item
Self-diagnostic test item
DTC
Test value
(GST display)
Test limit
Conversion
TID
CID
CATALYST
Three way catalyst function (Bank 1)
P0420
01H
01H
Max.
1/128
P0420
02H
81H
Min.
1
EVAP
SYSTEM
EVAP control system (Small leak)
P0442
05H
03H
Max.
1/128 mm
2
P1442
05H
03H
Max.
1/128 mm
2
EVAP control system purge flow monitoring
P0441
06H
83H
Min.
20 mV
EVAP control system (Very small leak)
P0456
07H
03H
Max.
1/128 mm
2
P1456
07H
03H
Max.
1/128 mm
2
HO2S
Heated oxygen sensor 1
P0133
09H
04H
Max.
16 ms
P1143
0AH
84H
Min.
10 mV
P1144
0BH 04H
Max.
10
mV
P0132
0CH
04H
Max.
10 mV
P0134
0DH
04H
Max.
1s
Heated oxygen sensor 2
P0139
19H
86H
Min.
10 mV/500 ms
P1147
1AH
86H
Min.
10 mV
P1146
1BH
06H
Max.
10 mV
P0138
1CH
06H
Max.
10 mV
HO2S
HEATER
Heated oxygen sensor 1 heater
P0032
29H
08H
Max.
20 mV
P0031
2AH
88H
Min.
20 mV
Heated oxygen sensor 2 heater
P0038
2DH
0AH
Max.
20 mV
P0037
2EH
8AH
Min.
20 mV
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-61
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HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION
How to Erase DTC (With CONSULT-II)
1.
If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 5
seconds and then turn it ON (engine stopped) again.
2.
Turn CONSULT-II “ON” and touch “ENGINE”.
3.
Touch “SELF-DIAG RESULTS”.
4.
Touch “ERASE”. (The DTC in the ECM will be erased.)
The emission-related diagnostic information can be erased by selecting “ERASE” in the “SELF-DIAG
RESULTS” mode with CONSULT-II.
How to Erase DTC (With GST)
1.
If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 5
seconds and then turn it ON (engine stopped) again.
2.
Select Mode 4 with GST (Generic Scan Tool).
The emission-related diagnostic information in the ECM can be erased by selecting Mode 4 with GST
(Generic Scan Tool).
EGR SYS-
TEM
EGR function
P0400
31H
8CH
Min.
1
°C
P0400
32H
8CH
Min.
1
°C
P0400
33H
8CH
Min.
1
°C
P0400
34H
8CH
Min.
1
°C
P1402
35H
0CH
Max.
1
°C
EGR-BPT valve function
P0402
36H
0CH
Max.
1 count
P0402
37H
8CH
Min.
1 count
Item
Self-diagnostic test item
DTC
Test value
(GST display)
Test limit
Conversion
TID
CID
LEC030A
EC-62
[KA24DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
NOTE:
●
If the battery is disconnected, the emission-related diagnostic information will be lost after
approx. 24 hours.
●
The following data are cleared when the ECM memory is erased.
1.
Diagnostic trouble codes
2.
1st trip diagnostic trouble codes
3.
Freeze frame data
4.
1st trip freeze frame data
5.
System readiness test (SRT) codes
6.
Test values
7.
Others
Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all
of the data listed above, are cleared from the ECM memory during work procedures.
Malfunction Indicator Lamp (MIL)
UBS00D1A
DESCRIPTION
The MIL is located on the instrument panel.
1.
The MIL will light up when the ignition switch is turned ON with-
out the engine running. This is a bulb check.
If the MIL does not light up, refer to
or see
.
2.
When the engine is started, the MIL should go off.
If the MIL remains on, the on board diagnostic system has
detected an engine system malfunction.
ON BOARD DIAGNOSTIC SYSTEM FUNCTION
The on board diagnostic system has the following two functions.
DIAGNOSTIC TEST MODE I — BULB CHECK
In this mode, the MIL on the instrument panel should stay ON. If it remains OFF, check the bulb. Refer to
SEF217U
Diagnostic Test
Mode
KEY and ENG.
Status
Function Explanation
of
Function
Mode I
Ignition switch in
ON position
Engine stopped
BULB CHECK
This function checks the MIL bulb for damage (blown,
open circuit, etc.).
If the MIL does not come on, check MIL circuit.
Engine running
MALFUNCTION
WARNING
This is a usual driving condition. When a malfunction is
detected twice in two consecutive driving cycles (two trip
detection logic), the MIL will light up to inform the driver
that a malfunction has been detected.
The following malfunctions will light up or blink the MIL in
the 1st trip.
●
“Misfire (Possible three way catalyst damage)”
●
“One trip detection diagnoses”
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