Nissan Frontier D22. Instruction — part 252
TROUBLE DIAGNOSIS
EC-111
[KA24DE]
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EC
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 instruction.
(*: 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 Instruction 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]
C
D
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A
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
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