Nissan Frontier D22. Manual - part 243

TROUBLE DIAGNOSIS

EC-75

[KA24DE]

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3. 

CHECK FI CAM FUNCTION

 With CONSULT-II

1.

Adjust accelerator wire. Refer to 

ACC-2, "Adjusting Accelerator Wire"

 .

2.

Warm up engine to 75

°C (167°F).

3.

Stop engine and wait at least 5 seconds, then turn ignition switch ON.

4.

Select  “COOLAN TEMP/S” in “DATA MONITOR” mode with
CONSULT-II.

5.

When the engine coolant temp is 75 to 85

°C (167 to 185°F),

confirm the clearance is less than 0.05 mm (0.0020 in), between
stopper and throttle drum as shown in the figure.

OK or NG

OK

>> GO TO 5.

NG

>> 1. Replace throttle body assembly. Refer to 

EM-13,

"OUTER COMPONENT PARTS"

 .

2. GO TO 5.

4. 

CHECK FI CAM FUNCTION

 With GST

1.

Adjust accelerator wire. Refer to 

ACC-2, "Adjusting Accelerator Wire"

 .

2.

Warm up engine to 75

°C (167°F).

3.

Stop engine and wait at least 10 seconds, then turn ignition switch ON.

4.

Select “MODE 1” with GST.

5.

When the engine coolant temp is 75 to 85

°C (167 to 185°F),

confirm the clearance is less than 0.05 mm (0.0020 in), between
stopper and throttle drum as shown in the figure.

OK or NG

OK >> GO 

TO 

12.

NG

>> 1. Replace throttle body assembly. Refer to 

EM-13,

"OUTER COMPONENT PARTS"

 .

2. GO TO 12.

SEF013Y

BBIA0428E

BBIA0428E

EC-76

[KA24DE]

TROUBLE DIAGNOSIS

5. 

CHECK IGNITION TIMING

 With CONSULT-II

1.

Warm up engine to normal operating temperature.

2.

Select “IGNITION TIMING ADJ” in “WORK SUPPORT” mode.

3.

Touch “START”.

4.

Check ignition timing at idle using timing light.

OK or NG

OK

>> GO TO 6.

NG

>> 1. Adjust ignition timing by turning distributor. Refer to

EC-36, "Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment"

 .

2. GO TO 6.

6. 

CHECK BASE IDLE SPEED

 With CONSULT-II

1.

Select  “IGNITION TIMING ADJ” in “WORK SUPPORT” mode
and touch “START”.

2.

Check idle speed.

OK or NG

OK

>> GO TO 7.

NG

>> 1. Adjust base idle speed by turning idle speed adjusting

screw. Refer to 

EC-36, "Idle Speed/Ignition Timing/

Idle Mixture Ratio Adjustment"

 .

2. GO TO 7.

PEF546N

Ignition timing

20

°±2° BTDC (in P or N position)

SEF320V

750

±50 rpm (in P or N position)

SEF714Z

TROUBLE DIAGNOSIS

EC-77

[KA24DE]

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7. 

CHECK CLOSED THROTTLE POSITION SWITCH IDLE POSITION (CHECK THROTTLE POSITION 

SENSOR IDLE POSITION)

 With CONSULT-II

NOTE:
Always check ignition timing and base idle speed before performing the following.
1.

Warm up engine to normal operating temperature.

2.

 Check FI cam. Refer to procedure 3.

3.

Stop engine.

4.

Turn ignition switch ON.

5.

Select “DATA MONITOR” mode with CONSULT-II.

6.

Select “CLSD THL/P SW” from the menu.

7.

Read “CLSD THL/P SW” signal under the following conditions.

–

Insert a 0.1 mm (0.004 in) and 0.3 mm (0.012 in) feeler gauge
alternately between the throttle adjust screw (TAS) and throttle
drum as shown in the figure and check the signal.
“CLSD THL/P SW” signal should remain “ON” while insert-
ing 0.1 mm (0.004 in) feeler gauge.
“CLSD THL/P SW” signal should remain “OFF” while insert-
ing 0.3 mm (0.012 in) feeler gauge.

OK or NG

OK

>> GO TO 11.

NG

>> GO TO 8.

SEF197Y

BBIA0428E

EC-78

[KA24DE]

TROUBLE DIAGNOSIS

8. 

ADJUSTMENT THROTTLE POSITION SENSOR IDLE POSITION-1

 With CONSULT-II

NOTE:

●

Never adjust throttle adjust screw (TAS).

●

Do not touch throttle drum when checking “CLSD THL/P SW” signal.
Doing so may cause an incorrect adjustment.

1.

Warm engine up to normal operating temperature.

2.

Check FI cam. Refer to procedure 3.

3.

Stop engine.

4.

Loosen throttle position sensor fixing bolts.

5.

Turn ignition switch ON.

6.

Select “CLSD THL/P SW” in “DATA MONITOR” mode.

7.

Insert a 0.1 mm (0.004 in) feeler gauge between throttle adjust
screw and throttle drum as shown in the figure.

8.

Open throttle valve and then close.

9.

Check “CLSD THL/P SW” signal.
 “CLSD THL/P SW” signal should remain “OFF” when the
throttle valve is closed.
If it is impossible to adjust closed throttle position switch, replace
throttle position sensor.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 9.

9. 

ADJUSTMENT THROTTLE POSITION SENSOR IDLE POSITION-2

 With CONSULT-II

Turn throttle position sensor body counterclockwise until “CLSD
THL/P SW” signal switches to “OFF”.

>> GO TO 10.

BBIA0428E

SEF197Y

AEC872A