Nissan Frontier D22. Manual - part 252

TROUBLE DIAGNOSIS

EC-111

[KA24DE]

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INSPECTION PROCEDURE

1.

Turn ignition switch OFF.

2.

Connect “GST” to data link connector which is located under LH
dash panel near the fuse box cover.

3.

Turn ignition switch ON.

4.

Enter the program according to instruction on the screen or in
the operation manual.

(*: Regarding GST screens in this section, sample screens are
shown.)

5.

Perform each diagnostic mode according to each service proce-
dure.

For further information, see the GST Operation Manual of the
tool maker.

MODE 4

CLEAR DIAG INFO

This mode can clear all emission-related diagnostic information. This includes:

●

Clear number of diagnostic trouble codes (MODE 1)

●

Clear diagnostic trouble codes (MODE 3)

●

Clear trouble code for freeze frame data (MODE 1)

●

Clear freeze frame data (MODE 2)

●

Reset status of system monitoring test (MODE 1)

●

Clear on board monitoring test results (MODE 6 and 7)

MODE 6

(ON BOARD TESTS)

This mode accesses the results of on board diagnostic monitoring tests of specific com-
ponents/systems that are not continuously monitored.

MODE 7

(ON BOARD TESTS)

This mode enables the off board test drive to obtain test results for emission-related pow-
ertrain components/systems that are continuously monitored during normal driving condi-
tions.

MODE 8

—

—

MODE 9

(CALIBRATION ID)

This mode is to enable the off-board to request vehicle specific information such as Vehi-
cle Identification Number (VIN) and Calibration ID.

Diagnostic test mode

Function

LEC104A

SEF398S

SEF416S

EC-112

[KA24DE]

TROUBLE DIAGNOSIS

CONSULT-II Reference Value in Data Monitor Mode

UBS00D1N

Remarks:

● Specification data are reference values.

● Specification data are output/input values which are detected or supplied by the ECM at the connector.

* Specification data may not be directly related to their components signals/values/operations.
(i.e., Adjust ignition timing with a timing light before monitoring IGN TIMING. Specification data might be displayed even when ignition

timing is not adjusted to specification. This IGN TIMING monitors the data calculated by the ECM according to the input signals from the
camshaft position sensor and other ignition timing related sensors.)

MONITOR ITEM

CONDITION

SPECIFICATION

ENG SPEED

●

Run engine and compare the CONSULT-II value with tachometer indica-
tion. 

Almost the same speed as the   
tachometer indication.

 MAS A/F SE-B1

●

Engine: After warming up

●

Air conditioner switch: OFF 

●

Shift lever: P or N

●

No-load

Idle

0.9 - 1.8V

2,500 rpm

1.9 - 2.3V

COOLAN TEMP/S

●

Engine: After warming up

More than 70

°C (158°F)

HO2S1 (B1)

●

Engine: After warming up

Maintaining engine speed at 2,000 
rpm

0 - 0.3V 

←→ Approx. 0.6 - 1.0V

HO2S1 MNTR (B1)

LEAN 

←→ RICH

Changes more than 5 times 
during 10 seconds.

HO2S2 (B1)

●

Engine: After warming up

●

After keeping engine speed 
between 3,500 and 4,000 rpm for 
1 minute and at idle for 1 minute 
under no load

Revving engine from idle up to 3,000 
rpm quickly

0 - 0.3V 

←→ Approx. 0.6 - 1.0V

HO2S2 MNTR (B1)

LEAN 

←→ RICH

VHCL SPEED SE

●

Turn drive wheels and compare the CONSULT-II value with speedometer 
indication. 

Almost the same speed as the 
speedometer indication

BATTERY VOLT 

●

Ignition switch: ON (Engine stopped)

11 - 14V

THRTL POS SEN

●

Engine: After warming up

●

Ignition switch: ON
(Engine stopped)

Throttle valve: Fully closed

0.2 - 0.8V

Throttle valve: Fully opened

3.5 - 4.5V

EGR TEMP SEN

●

Engine: After warming up

Less than 4.5V

START SIGNAL

●

Ignition switch: ON 

→ START → ON

OFF 

→ ON → OFF

CLSD THL/P SW

●

Engine: After warming up

●

Ignition switch: ON
(Engine stopped)

Throttle valve: Idle position

ON

Throttle valve: Slightly open

OFF

CLSD THL POS

●

Engine: After warming up

●

Ignition switch: ON
(Engine stopped) 

Throttle valve: Idle position

ON

Throttle valve: Slightly open

OFF

AIR COND SIG

●

Engine: After warming up, idle 
the engine

A/C switch: OFF

OFF

A/C switch: ON
(Compressor operates.)

ON

P/N POSI SW

●

Ignition switch: ON

Shift lever: P or N

ON

Except above

OFF

PW/ST SIGNAL

●

Engine: After warming up, idle 
the engine

Steering wheel in neutral position
(forward direction)

OFF

Steering wheel is turned

ON

IGNITION SW

●

Ignition switch: ON 

→ OFF → ON

ON 

→ OFF → ON

INJ PULSE-B1

●

Engine: After warming up

●

Air conditioner switch: OFF

●

Shift lever: P or N

●

No-load

Idle

2.5 - 3.3 msec

2,000 rpm

2.4 - 3.2 msec

TROUBLE DIAGNOSIS

EC-113

[KA24DE]

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EC

B/FUEL SCHDL

●

Engine: After warming up

●

Air conditioner switch: OFF

●

Shift lever: P or N

●

No-load

Idle

0.8 - 1.2 msec

2,000 rpm

0.8 - 1.2 msec

IGN TIMING

●

Engine: After warming up

●

Air conditioner switch: OFF

●

Shift lever: P or N

●

No-load

Idle

Approx. 20

° BTDC

2,000 rpm

More than 25

° BTDC

IACV-AAC/V

●

Engine: After warming up

●

Air conditioner switch: OFF

●

Shift lever: P or N

●

No-load

Idle

Approx. 30%

2,000 rpm

—

PURG VOL C/V

●

Engine: After warming up

●

Air conditioner switch: OFF

●

No-load

Idle

0%

2,000 rpm (More than 200 seconds 
after starting engine)

—

A/F ALPHA-B1

●

Engine: After warming up

Maintaining engine speed at 2,000 
rpm

50 - 159%

EVAP SYS PRES

●

Ignition switch: ON

1.8 - 4.8V

AIR COND RLY

●

Air conditioner switch: OFF 

→ ON

OFF 

→ ON

FUEL PUMP RLY

●

Ignition switch is turned to ON (Operates for 5 seconds)

●

Engine running and cranking

ON

●

Except as shown above

OFF

EGRC SOL/V

●

Engine: After warming up

●

Air conditioner switch: OFF

●

Shift lever: P or N

●

No-load

Idle

OFF

Engine speed: Revving engine from 
idle to 3,000 rpm quickly.

ON

VENT CONT/V

●

Ignition switch: ON

OFF

HO2S1 HTR (B1)

●

Engine speed: Below 3,600 rpm

ON

●

Engine speed: Above 3,600 rpm

OFF

HO2S2 HTR (B1)

●

Engine speed is running below 4,000 rpm after the following conditions are 
met.

●

Engine: After warming up

●

Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and 
at idle for 1 minute under on load

ON

●

Ignition switch: ON (Engine stopped)

OFF

VC/V BYPASS/V

●

Ignition switch: ON

OFF

CAL/LD VALUE

●

Engine: After warming up

●

Air conditioner switch: OFF

●

Shift lever: P or N

●

No-load

Idle

9.5 - 34.0%

2,500 rpm

13.9 - 24.9%

ABSOL TH·P/S

●

Engine: After warming up, engine 
stopped

●

Ignition switch: ON

Throttle valve: Fully closed

0.0%

Throttle valve: Fully opened

Approx. 80%

MASS AIRFLOW

●

Engine: After warming up

●

Air conditioner switch: OFF

●

Shift lever: P or N

●

No-load

Idle

0.9 - 5.8 g·m/s

2,500 rpm

7.5 - 13.2 g·m/s

MONITOR ITEM

CONDITION

SPECIFICATION

EC-114

[KA24DE]

TROUBLE DIAGNOSIS

Major Sensor Reference Graph in Data Monitor Mode

UBS00D1O

The following are the major sensor reference graphs in “DATA MONITOR” mode.
(Select  “MANU TRIG” in “DATA MONITOR” with CONSULT-II. “Trigger Point” is set to 100%, “Recording
Speed” is set to MAX..)

THRTL POS SEN, ABSOL TH·P/S, CLSD THL POS 

Below is the data for “THRTL POS SEN”, “ABSOL TH·P/S” and “CLSD THL POS” when depressing the accel-
erator pedal with the ignition switch ON.
The signal of “THRTL POS SEN” and “ABSOL TH·P/S” should rise gradually without any intermittent drop or
rise after “CLSD THL POS” is changed from “ON” to “OFF”.

ENG SPEED, MAS A/F SE-B1, THRTL POS SEN, HO2S2 (B1), HO2S1 (B1), INJ PULSE-B1

Below is the data for “ENG SPEED”, “MAS A/F SE-B1”, “THRTL POS SEN”, “HO2S2 (B1)”, “HO2S1 (B1)” and
“INJ PULSE-B1” when revving engine quickly up to 4,800 rpm under no load after warming up engine to nor-
mal operating temperature.
Each value is for reference, the exact value may vary.

SEF306Y

SEF241Y