Nissan Frontier D40. Instruction — part 342
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-59
< FUNCTION DIAGNOSIS >
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MISFIRE
A1H
Multiple Cylinder Misfires
P0301
80H
24H
Misfiring counter at 1000 revolution of
the first cylinder
P0302
81H
24H
Misfiring counter at 1000 revolution of
the second cylinder
P0303
82H
24H
Misfiring counter at 1000 revolution of
the third cylinder
P0304
83H
24H
Misfiring counter at 1000 revolution of
the fourth cylinder
P0305
84H
24H
Misfiring counter at 1000 revolution of
the fifth cylinder
P0306
85H
24H
Misfiring counter at 1000 revolution of
the sixth cylinder
P0307
86H
24H
Misfiring counter at 1000 revolution of
the seventh cylinder
P0308
87H
24H
Misfiring counter at 1000 revolution of
the eighth cylinder
P0300
88H
24H
Misfiring counter at 1000 revolution of
the multiple cylinders
P0301
89H
24H
Misfiring counter at 200 revolution of the
first cylinder
P0302
8AH
24H
Misfiring counter at 200 revolution of the
second cylinder
P0303
8BH
24H
Misfiring counter at 200 revolution of the
third cylinder
P0304
8CH
24H
Misfiring counter at 200 revolution of the
fourth cylinder
P0305
8DH
24H
Misfiring counter at 200 revolution of the
fifth cylinder
P0306
8EH
24H
Misfiring counter at 200 revolution of the
sixth cylinder
P0307
8FH
24H
Misfiring counter at 200 revolution of the
seventh cylinder
P0308
90H
24H
Misfiring counter at 200 revolution of the
eighth cylinder
P0300
91H
24H
Misfiring counter at 1000 revolution of
the single cylinder
P0300
92H
24H
Misfiring counter at 200 revolution of the
single cylinder
P0300
93H
24H
Misfiring counter at 200 revolution of the
multiple cylinders
Item
OBD-
MID
Self-diagnostic test item
DTC
Test value and Test
limit
(GST display)
Description
TID
Unit and
Scaling
ID
EC-60
< FUNCTION DIAGNOSIS >
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION
How to Erase DTC
With CONSULT-III
NOTE:
• 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.
• If the DTC is not for A/T related items (see
), skip step 1.
1.
Erase DTC in TCM. Refer to
TM-149, "OBD-II Diagnostic Trouble Code (DTC)"
.
2.
Select “ENGINE” with CONSULT-III.
3.
Select “SELF-DIAG RESULTS”.
MISFIRE
A2H
No. 1 Cylinder Misfire
P0301
0BH
24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0301
0CH
24H
Misfire counts for last/current driving cy-
cles
A3H
No. 2 Cylinder Misfire
P0302
0BH
24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0302
0CH
24H
Misfire counts for last/current driving cy-
cles
A4H
No. 3 Cylinder Misfire
P0303
0BH
24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0303
0CH
24H
Misfire counts for last/current driving cy-
cles
A5H
No. 4 Cylinder Misfire
P0304
0BH
24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0304
0CH
24H
Misfire counts for last/current driving cy-
cles
A6H
No. 5 Cylinder Misfire
P0305
0BH
24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0305
0CH
24H
Misfire counts for last/current driving cy-
cles
A7H
No. 6 Cylinder Misfire
P0306
0BH
24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0306
0CH
24H
Misfire counts for last/current driving cy-
cles
A8H
No. 7 Cylinder Misfire
P0307
0BH
24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0307
0CH
24H
Misfire counts for last/current driving cy-
cles
A9H
No. 8 Cylinder Misfire
P0308
0BH
24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0308
0CH
24H
Misfire counts for last/current driving cy-
cles
Item
OBD-
MID
Self-diagnostic test item
DTC
Test value and Test
limit
(GST display)
Description
TID
Unit and
Scaling
ID
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-61
< FUNCTION DIAGNOSIS >
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4.
Touch “ERASE”. (DTC in ECM will be erased.)
With GST
NOTE:
• 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.
1.
Select Service $04 with GST (Generic Scan Tool).
No Tools
NOTE:
• 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.
1.
Erase DTC in ECM. Refer to How To ERASE DIAGNOSTIC TEST MODE II (SELF-DIAGNOSTIC
RESULTS).
NOTE:
• If the battery is disconnected, the emission-related diagnostic information will be cleared within 24
hours.
• The following data are cleared when the ECM memory is erased.
- Diagnostic trouble codes
- 1st trip diagnostic trouble codes
- Freeze frame data
- 1st trip freeze frame data
- System readiness test (SRT) codes
- Test values
• 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)
INFOID:0000000005273040
DESCRIPTION
The MIL is located on the instrument panel.
1.
The MIL will illuminate when the ignition switch is turned ON
without the engine running. This is a bulb check.
If the MIL does not light up, refer to
2.
When the engine is started, the MIL should turn off.
If the MIL remains illuminated, the on board diagnostic system
has detected an engine system malfunction.
ON BOARD DIAGNOSTIC SYSTEM FUNCTION
The on board diagnostic system has the following 3 functions.
SEF217U
EC-62
< FUNCTION DIAGNOSIS >
[QR25DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
When there is an open circuit on MIL circuit, the ECM cannot warn the driver by illuminating MIL when there is
malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means
of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MIL circuit are detected, and demands the
driver to repair the malfunction.
MIL Flashing Without DTC
When any SRT codes are not set, MIL may flash without DTC. For the details, refer to
.
HOW TO SWITCH DIAGNOSTIC TEST MODE
NOTE:
• It is better to count the time accurately with a clock.
• It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has
a malfunction.
• Always ECM returns to Diagnostic Test Mode I after ignition switch is turned OFF.
HOW TO SET DIAGNOSTIC TEST MODE II (SELF-DIAGNOSTIC RESULTS)
1.
Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
2.
Repeat the following procedure quickly 5 times within 5 seconds.
a.
Fully depress the accelerator pedal.
b.
Fully release the accelerator pedal.
3.
Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts
blinking.
NOTE:
Do not release the accelerator pedal for 10 seconds if MIL may start blinking on the halfway of this
10 seconds. This blinking is displaying SRT status and is continued for another 10 seconds. For
the details, refer to
4.
Fully release the accelerator pedal.
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 illuminate, check MIL circuit.
Engine running
MALFUNCTION
WARNING
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 illuminate or blink the MIL in
the 1st trip.
• Misfire (Possible three way catalyst damage)
• One trip detection diagnoses
Mode II
Ignition switch in
ON position
Engine stopped
SELF-DIAGNOSTIC
RESULTS
This function allows DTCs and 1st trip DTCs to be read.
Engine operating condition in fail-safe mode
Engine speed will not rise more than 2,500 rpm due to the fuel cut
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