NISSAN PICK-UP 2001 Repair Manual

Basic InspectionNEEC0038Precaution:
Perform Basic Inspection without electrical or mechanical
loads applied;
+Headlamp switch is OFF,
+Air conditioner switch is OFF,
+Rear window defogger switch is OFF,
+Steering wheel is in the straight-ahead position, etc.
1 INSPECTION START
1. Check service records for any recent repairs that may indicate a related problem, or the current need for scheduled
maintenance.
2. Open engine hood and check the following:
+Harness connectors for improper connections
+Vacuum hoses for splits, kinks, or improper connections
+Wiring for improper connections, pinches, or cuts
SEF142I
With CONSULT-II©GO TO 2.
With GST©GO TO 4.
No tools©GO TO 5.
2 CONNECT CONSULT-II TO THE VEHICLE
Connect ªCONSULT-IIº to the data link connector and select ªENGINEº from the menu. Refer to EC-3070.
SEC305D
©GO TO 3.
TROUBLE DIAGNOSIS Ð BASIC
INSPECTION
KA24DE (EURO OBD)
Basic Inspection
EC-3086

3 CHECK FI CAM FUNCTION
With CONSULT-II
1. Adjust accelerator wire. Refer to ªAdjust Accelerator Wireº, FE section.
2. Warm up engine to 75ÉC (167ÉF).
3. Stop engine and wait at least 5 seconds, then turn ignition switch ON.
4. Select ªCOOLAN TEMP/Sº in ªDATA MONITORº mode with CONSULT-II.
5. When the engine coolant temp is 75 to 85ÉC (167 to 185ÉF), confirm the clearance is less than 0.05 mm (0.0020 in),
between stopper and throttle drum as shown in the figure.
AEC871A
OK or NG
OK©GO TO 6.
NG©1. Replace throttle body assembly. Refer to ªOUTER COMPONENT PARTSº, EM sec-
tion.
2. GO TO 6.
4 CHECK FI CAM FUNCTION
With GST
1. Adjust accelerator wire. Refer to ªAdjust Accelerator Wireº, FE section.
2. Warm up engine to 75ÉC (167ÉF).
3. Stop engine and wait at least 10 seconds, then turn ignition switch ON.
4. Select ªMODE 1º with GST.
5. When the engine coolant temp is 75 to 85ÉC (167 to 185ÉF), confirm the clearance is less than 0.05 mm (0.0020 in),
between stopper and throttle drum as shown in the figure.
AEC871A
OK or NG
OK (With CONSULT-II)©GO TO 6.
OK (Without CONSULT-
II)©GO TO 14.
NG©1. Replace throttle body assembly. Refer to ªOUTER COMPONENT PARTSº, EM sec-
tion.
2. With CONSULT-II: GO TO 6.
Without CONSULT-II: GO TO 14.
TROUBLE DIAGNOSIS Ð BASIC
INSPECTION
KA24DE (EURO OBD)
Basic Inspection
EC-3087

5 CHECK FI CAM FUNCTION
No Tools
1. Adjust accelerator wire. Refer to ªAdjust Accelerator Wireº, FE section.
2. Disconnect engine coolant temperature sensor harness connector and check resistance as shown in the figure.
SEF536H
3. Warm up engine until the resistance of coolant temperature sensor is 0.26 to 0.39 kW.
4. Turn ignition switch OFF.
5. When engine coolant temperature is 75 to 85ÉC (167 to 185ÉF), with the voltage between 1.10 to 1.36V, make sure that
the clearance is less than 0.05 mm (0.0020 in), between stopper and throttle adjusting screw as shown in figure.
AEC871A
OK or NG
OK©GO TO 14.
NG©1. Replace throttle body assembly. Refer to ªOUTER COMPONENT PARTSº, EM sec-
tion.
2. GO TO 14.
TROUBLE DIAGNOSIS Ð BASIC
INSPECTION
KA24DE (EURO OBD)
Basic Inspection
EC-3088

6 CHECK IGNITION TIMING
With CONSULT-II
1. Warm up engine to normal operating temperature.
2. Select ªIGNITION TIMING ADJº in ªWORK SUPPORTº mode.
3. Touch ªSTARTº.
PEF546N
4. Check ignition timing at idle using timing light.
SEF320V
Ignition timing:
15ɱ2É BTDC
OK or NG
OK©GO TO 7.
NG©1. Adjust ignition timing by turning distributor. Refer to ªIdle Speed/Ignition Timing/Idle
Mixture Ratio Adjustmentº, EC-3035.
2. GO TO 7.
TROUBLE DIAGNOSIS Ð BASIC
INSPECTION
KA24DE (EURO OBD)
Basic Inspection
EC-3089

7 CHECK BASE IDLE SPEED
With CONSULT-II
1. Select ªIGNITION TIMING ADJº in ªWORK SUPPORTº mode and touch ªSTARTº.
SEF714Z
2. Check idle speed.
650±50 rpm
OK or NG
OK©GO TO 8.
NG©1. Adjust base idle speed by turning idle speed adjusting screw. Refer to ªIdle Speed/
Ignition Timing/Idle Mixture Ratio Adjustmentº, EC-3035.
2. GO TO 8.
TROUBLE DIAGNOSIS Ð BASIC
INSPECTION
KA24DE (EURO OBD)
Basic Inspection
EC-3090

8 CHECK CLOSED THROTTLE POSITION SWITCH IDLE POSITION (CHECK THROTTLE POSITION SEN-
SOR 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 ªDATA MONITORº mode with CONSULT-II.
6. Select ªCLSD THL/P SWº from the menu.
7. Read ªCLSD THL/P SWº 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.
AEC871A
SEF197Y
ªCLSD THL/P SWº signal should remain ªONº while inserting 0.1 mm (0.004 in) feeler gauge.
ªCLSD THL/P SWº signal should remain ªOFFº while inserting 0.3 mm (0.012 in) feeler gauge.
OK or NG
OK©GO TO 12.
NG©GO TO 9.
TROUBLE DIAGNOSIS Ð BASIC
INSPECTION
KA24DE (EURO OBD)
Basic Inspection
EC-3091

9 ADJUSTMENT THROTTLE POSITION SENSOR IDLE POSITION-1
With CONSULT-II
NOTE:
+Never adjust throttle adjust screw (TAS).
+Do not touch throttle drum when checking ªCLSD THL/P SWº 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 ªCLSD THL/P SWº in ªDATA MONITORº mode.
7. Insert a 0.1 mm (0.004 in) feeler gauge between throttle adjust screw and throttle drum as shown in the figure.
AEC871A
8. Open throttle valve and then close.
9. Check ªCLSD THL/P SWº signal.
SEF197Y
ªCLSD THL/P SWº signal should remain ªOFFº 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 11.
NG©GO TO 10.
TROUBLE DIAGNOSIS Ð BASIC
INSPECTION
KA24DE (EURO OBD)
Basic Inspection
EC-3092

10 ADJUSTMENT THROTTLE POSITION SENSOR IDLE POSITION-2
With CONSULT-II
Turn throttle position sensor body counterclockwise until ªCLSD THL/P SWº signal switches to ªOFFº.
AEC872A
©GO TO 11.
11 ADJUSTMENT THROTTLE POSITION SENSOR IDLE POSITION-3
With CONSULT-II
1. Temporarily tighten sensor body fixing bolts as follows.
+Gradually move the sensor body clockwise and stop it when ªCLSD THL/P SWº signal switches from ªOFFº to
ªONº when tightening sensor body fixing bolts.
AEC872A
2. Make sure two or three times that the signal is ªONº when the throttle valve is closed and ªOFFº when it is opened.
3. Remove 0.1 mm (0.004 in) feeler gauge then insert 0.3 mm (0.012 in) feeler gauge.
4. Make sure two or three times that the signal remains ªOFFº when the throttle valve is closed.
5. Tighten throttle position sensor.
6. Check ªCLSD THL/P SWº signal again.
The signal remains ªOFFº while closing throttle valve.
OK or NG
OK©1. Remove 0.3 mm (0.012 in) feeler gauge.
2. GO TO 12.
NG©GO TO 9.
TROUBLE DIAGNOSIS Ð BASIC
INSPECTION
KA24DE (EURO OBD)
Basic Inspection
EC-3093

12 RESET THROTTLE POSITION SENSOR IDLE POSITION MEMORY
With CONSULT-II
NOTE:
Always warm up engine to normal operating temperature. If engine is cool, the throttle position sensor idle posi-
tion memory will not be reset correctly.
1. Start engine.
2. Warm up engine to normal operating temperature.
3. Select ªCLSD THL POSº in ªDATA MONITORº mode manual trigger.
4. Stop engine. (Turn ignition switch OFF.)
5. Turn ignition switch ON and wait at least 5 seconds.
SEF864V
6. Turn ignition switch OFF and wait at least 5 seconds.
7. Repeat steps 5 and 6 until ªCLSD THL POSº in ªDATA MONITORº mode with CONSULT-II changes to ªONº.
SEF715Z
©GO TO 13.
13 CHECK TARGET IDLE SPEED
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select ªENG SPEEDº in ªDATA MONITORº mode.
3. Check idle speed.
700±50 rpm
OK or NG
OK©INSPECTION END
NG©Adjust idle speed. Refer to ªIdle Speed/Ignition Timing/Idle Mixture Ratio Adjustmentº,
EC-3035. Inspection end after adjust idle speed.
TROUBLE DIAGNOSIS Ð BASIC
INSPECTION
KA24DE (EURO OBD)
Basic Inspection
EC-3094

14 CHECK IGNITION TIMING
Without CONSULT-II
1. Warm up engine to normal operating temperature.
2. Stop engine and disconnect throttle position sensor harness connector.
SEF265S
3. Start engine.
4. Rev engine (2,000 to 3,000 rpm) two or three times under no-load and then run engine at idle speed.
5. Check ignition timing at idle using timing light.
SEF320V
Ignition timing:
15ɱ2É BTDC
OK or NG
OK©GO TO 15.
NG©1. Adjust ignition timing by turning distributor. Refer to ªIdle Speed/Ignition Timing/Idle
Mixture Ratio Adjustmentº, EC-3035.
2. GO TO 15.
15 CHECK BASE IDLE SPEED
Without CONSULT-II
Make sure that engine speed falls to the following speed.
650±50 rpm
OK or NG
OK©GO TO 16.
NG©1. Adjust base idle speed by turning idle speed adjusting screw. Refer to ªIdle Speed/
Ignition Timing/Idle Mixture Ratio Adjustmentº, EC-3035.
2. GO TO 16.
TROUBLE DIAGNOSIS Ð BASIC
INSPECTION
KA24DE (EURO OBD)
Basic Inspection
EC-3095