Nissan Frontier D22. Manual - part 382

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-631

[VG33E]

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EC

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.

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)

km/h (MPH)

1st to 2nd

24 (15)

24 (15)

2nd to 3rd

40 (25)

40 (25)

3rd to 4th

64 (40)

64 (40)

4th to 5th

72 (45)

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

Three way catalyst function (Bank 2)

P0430

03H

02H

Max.

1/128

P0430

04H

82H

Min.

1

EVAP SYSTEM

EVAP control system (Small leak)

P0442

 05H

03H

Max.

1/128mm

2

 EVAP control system purge flow monitoring

P0441

06H

83H

Min.

20mV

EVAP control system (Very small leak)

P0456

07H

03H

Max.

1/128mm

2

P1456

07H

03H

Max.

1/128mm

2

EC-632

[VG33E]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION
How to Erase DTC

 WITH CONSULT-II

NOTE:
If the DTC is not for A/T related items (see 

EC-584

 ), 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 5
seconds and then turn it ON (engine stopped) again.

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.

HO2S

Heated oxygen sensor 1 (bank 1)

P0133

09H

04H

Max.

16ms

P1143

0AH

84H

Min.

10mV

P1144

0BH

04H

Max.

10mV

P0132

0CH

04H

Max.

10mV

P0134

0DH

04H

Max.

1s

Heated oxygen sensor 1 (bank 2)

P0153

11H

05H

Max.

16ms

P1163

12H

85H

Min.

10mV

P1164

13H

05H

Max.

10mV

P0152

14H

05H Max.

10mV

P0154

15H

05H

Max.

1s

Heated oxygen sensor 2 (bank 1)

P0139

19H

86H

Min.

10mV/500ms

P1147

1AH

86H

Min.

10mV

P1146

1BH

 06H

Max.

10mV

P0138

1CH

06H

Max.

10mV

Heated oxygen sensor 2 (bank 2)

P0159

21H

87H

Min.

10mV/500ms

P1167

22H

87H

Min.

10mV

P1166

23H

07H

Max.

10mV

P0158

24H

07H

Max.

10mV

HO2S HEATER

Heated oxygen sensor 1 (bank 1)

P0032

29H

08H

Max.

20mV

P0031

2AH

88H

Min.

20mV

Heated oxygen sensor 1 (bank 2)

P0052

2BH

09H

Max.

20mV

P0051

2CH

89H

Min.

20mV

Heated oxygen sensor 2 (bank 1)

P0038

2DH

0AH

Max.

20mV

P0037

2EH

8AH

Min.

20mV

Heated oxygen sensor 2 (bank 2)

P0058

2FH

0BH

Max.

20mV

P0057

30H

8BH

Min.

20mV

EGR SYSTEM

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

EGRC-BPT valve function

P0402

36H

0CH

Max.

1count

P0402

37H

8CH

Min.

1count

Item

Self-diagnostic test item

DTC

Test value (GST display)

Test 
limit

Conversion

TID

CID

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-633

[VG33E]

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EC

5.

Touch “ENGINE”.

6.

Touch “SELF-DIAG RESULTS”.

7.

Touch “ERASE”. (The DTC in the ECM will be erased.)

●

If DTCs are displayed for both ECM and TCM (Transmission control module), they need to be erased indi-
vidually from the ECM and TCM (Transmission control module).

The emission related diagnostic information in the ECM can be erased by selecting “ERASE” in the “SELF-
DIAG RESULTS” mode with CONSULT-II.

 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 

EC-584

 ), skip step 2.

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.

Perform 

AT-188

 . (The DTC in TCM will be erased.)

3.

Select MODE 4 with GST (Generic Scan Tool).

●

If the battery is disconnected, the emission-related diagnostic information will be lost 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

SEF823YD

EC-634

[VG33E]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

–

 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)

UBS00DEZ

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 

DI-25, "WARNING LAMPS"

 ,

or see 

EC-1163

 .

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 

DI-

25, "WARNING LAMPS"

 , or see 

EC-1163

 .

DIAGNOSTIC TEST MODE I — MALFUNCTION WARNING

OBD System Operation Chart

UBS00DF0

RELATIONSHIP BETWEEN MIL, 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 MIL will come on. For details, refer to 

EC-619, "Two Trip Detection

Logic"

 .

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. (See 

EC-

1163

 .)

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

MIL

Condition

ON

When the malfunction is detected or the ECM's CPU is malfunctioning.

OFF

No malfunction.