Nissan Almera Tino V10 (2001 year). Manual

ADJUSTMENT THROTTLE POSITION SWITCH CLOSED POSITION-II

Without CONSULT-II

1. Temporarily tighten sensor body fixing bolts as follows.

Gradually move the sensor body clockwise and stop it when the continuity comes to exist, then temporarily
tighten sensor body fixing bolts.

SEF867X

2. Make sure two or three times that the continuity exists when the throttle valve is closed and continuity does not exist

when it is opened.

3. Remove 0.05 mm (0.0020 in) feeler gauge then insert 0.15 mm (0.0059 in) feeler gauge.
4. Make sure two or three times that the continuity does not exist when the throttle valve is closed.
5. Tighten throttle position sensor.
6. Check the continuity again.

Continuity does not exist while closing the throttle valve.

OK or NG

GO TO 16.

GO TO 14.

RESET THROTTLE POSITION SENSOR IDLE POSITION MEMORY

Without 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. Confirm that proper vacuum is applied. Refer to Test No. 6.
2. Attach blind cap to vacuum port from which vacuum hose to throttle opener was disconnected.
3. Start engine.
4. Warm up engine to normal operating temperature.
5. Stop engine. (Turn ignition switch “OFF”.)
6. Turn ignition switch “ON” and wait at least 5 seconds.

SEF864V

7. Turn ignition switch “OFF” and wait at least 10 seconds.
8. Repeat steps 6 and 7, 20 times.

GO TO 17.

TROUBLE DIAGNOSIS — BASIC INSPECTION

SR20DE

Basic Inspection (Models with Throttle Opener) (Cont’d)

EC-633

CHECK IGNITION TIMING-II

1. Stop engine.
2. Reconnect throttle position sensor harness connector.
3. Start engine and let it idle.
4. Check ignition timing at idle using a timing light.

SEF984U

Ignition timing:

15°

2° BTDC (in “P” or “N” position)

OK or NG

GO TO 29.

GO TO 19.

PERFORM IDLE AIR VOLUME LEARNING

Refer to “Idle Air Volume Learning”, EC-581.

Is the result CMPLT or INCMP?

CMPLT or INCMP

CMPLT

GO TO 20.

INCMP

Follow the instruction of “Idle Air Volume Learning”.

CHECK IGNITION TIMING AGAIN

Check ignition timing again. Refer to Test No. 12 (With CONSULT-II) or 18 (Without CONSULT-II).

OK or NG

OK (With CONSULT-II)

GO TO 26.

OK (Without CONSULT-
II)

GO TO 29.

GO TO 21.

CHECK FOR INTAKE AIR LEAK

1. Start engine and let it idle.
2. Listen for an air leak from PCV hose and after IACV-AAC valve.

OK or NG

GO TO 23.

GO TO 22.

REPAIR MALFUNCTION

1. Stop engine.
2. Repair or replace malfunctioning part.

GO TO 19.

TROUBLE DIAGNOSIS — BASIC INSPECTION

SR20DE

Basic Inspection (Models with Throttle Opener) (Cont’d)

EC-635

DETECT MALFUNCTIONING PART

Check the IACV-AAC valve circuit and function. Refer to EC-863 (Models with Euro-OBD system) or EC-995 (Models with-
out Euro-OBD system).

OK or NG

GO TO 25.

GO TO 24.

REPAIR MALFUNCTION

Repair or replace malfunction part following the “Diagnostic Procedure” corresponding the detected malfunction.

GO TO 19.

CHECK ECM FUNCTION

1. Substitute another known good ECM to check ECM function.

(ECM may be the cause of a problem, but this is rarely the case.)

2. Perform initialization of NATS system and registration of NATS ignition key IDs. Refer to “NATS (Nissan Anti-theft

System)”, EC-597.

GO TO 19.

CHECK TARGET IDLE SPEED

With CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Select “ENG SPEED” in “DATA MONITOR” mode.
3. Check idle speed.

750

50 rpm (in “P” or “N” position)

OK or NG

GO TO 32.

GO TO 27.

PERFORM IDLE AIR VOLUME LEARNING

Refer to “Idle Air Volume Learning”, EC-581.
Is the result CMPLT or INCMP?

CMPLT or INCMP

CMPLT

GO TO 28.

INCMP

Follow the instruction of “Idle Air Volume Learning”.

CHECK TARGET IDLE SPEED AGAIN

1. Start engine and warm it up to normal operating temperature.
2. Select “ENG SPEED” in “DATA MONITOR” mode with CONSULT-II.
3. Check idle speed.

750

50 rpm (in “P” or “N” position)

OK or NG

GO TO 32.

GO TO 21.

TROUBLE DIAGNOSIS — BASIC INSPECTION

SR20DE

Basic Inspection (Models with Throttle Opener) (Cont’d)

EC-636

CHECK TARGET IDLE SPEED

Without CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.

750

50 rpm (in “P” or “N” position)

OK or NG

GO TO 32.

GO TO 30.

PERFORM IDLE AIR VOLUME LEARNING

Refer to “Idle Air Volume Learning”, EC-581.

Is the result CMPLT or INCMP?

CMPLT or INCMP

CMPLT

GO TO 31.

INCMP

Follow the instruction of “Idle Air Volume Learning”.

CHECK TARGET IDLE SPEED AGAIN

1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.

750

50 rpm (in “P” or “N” position)

OK or NG

GO TO 32.

GO TO 21.

ERASE UNNECESSARY DTC

After this inspection, unnecessary DTC No. might be displayed.
Erase the stored memory in ECM and TCM (Transmission control module).
Refer to “HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION”, EC-594, 596 and “HOW TO ERASE
DTC”, AT-19 .

INSPECTION END

TROUBLE DIAGNOSIS — BASIC INSPECTION

SR20DE

Basic Inspection (Models with Throttle Opener) (Cont’d)

EC-637

Basic Inspection (Models without Throttle
Opener)

=NLEC1930

Precaution:
Perform Basic Inspection without electrical or mechanical
loads applied;

Headlamp switch is OFF,

On vehicles equipped with daytime running light system, set
lighting switch to the 1st position to light only small lamps.

Air conditioner switch is OFF,

Rear window defogger switch is OFF,

Steering wheel is in the straight-ahead position, etc.

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

Air cleaner clogging

Hoses and ducts for leaks

SEF983U

GO TO 2.

CHECK THROTTLE DRUM OPERATION

Confirm that throttle drum is in contact with the stopper.

OK or NG

OK (with CONSULT-II)

GO TO 5.

OK (without CONSULT-
II)

GO TO 8.

GO TO 3.

CHECK ACCELERATOR WIRE INSTALLATION

Check accelerator wire for slack.

OK or NG

GO TO 4.

Adjust accelerator wire. Refer to FE section, “Adjusting Accelerator Wire”.

TROUBLE DIAGNOSIS — BASIC INSPECTION

SR20DE

Basic Inspection (Models without Throttle Opener)

EC-638

CHECK THROTTLE VALVE OPERATION

1. Remove intake air ducts.
2. Check throttle valve operation when moving throttle drum by hand.

OK or NG

Retighten the throttle drum fixing nuts.

Clean the throttle body and throttle valve.

CHECK CLOSED THROTTLE POSITION SWITCH IDLE POSITION

With CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Turn ignition switch “ON”.
4. Select “THRTL POS SEN” and “CLSD THL POS” in “DATA MONITOR” mode with CONSULT-II.
5. Make sure that “THRTL POS SEN” indicates 0.35 to 0.65V, and “CLSD THL POS” indicates “ON”. (Accelerator pedal is

fully released).

NEF238A

OK or NG

GO TO 11.

GO TO 6.

ADJUSTMENT THROTTLE POSITION SENSOR IDLE POSITION

With CONSULT-II

1. Loosen throttle position sensor fixing bolts.
2. Turn throttle position sensor body clockwise or counterclockwise until “THRTL POS SEN” indication becomes 0.35 to

0.65V.

SEF964W

3. Tighten the throttle position sensor fixing bolts.

GO TO 7.

TROUBLE DIAGNOSIS — BASIC INSPECTION

SR20DE

Basic Inspection (Models without Throttle Opener) (Cont’d)

EC-639

ADJUST THROTTLE POSITION SENSOR IDLE POSITION

Without CONSULT-II

1. Loosen throttle position sensor fixing bolts.
2. Turn throttle position sensor body clockwise or counterclockwise until the voltage between ECM terminal 92 and ground

becomes 0.35 to 0.65V.0

SEF964W

3. Tighten the throttle position sensor fixing bolts.

GO TO 10.

RESET THROTTLE POSITION SENSOR IDLE POSITION MEMORY

Without CONSULT-II

NOTE:
Always warm up engine to normal operating temperature. If engine is cold, the throttle position sensor idle posi-
tion memory will not be reset correctly.
1. Start engine and warm it up to normal operating temperature.
2. Stop engine. (Turn ignition switch “OFF”).
3. Turn ignition switch “ON” and wait at least 5 seconds.

SEF864V

4. Turn ignition switch “OFF” and wait at least 9 seconds.
5. Repeat steps 4 and 6, 20 times.

GO TO 11.

CHECK (1ST TRIP) DTC

1. Start engine and warm it up to normal operating temperature.
2. Rev (2,000 to 3,000 rpm) two or three times.
3. Make sure no (1st trip) DTC is displayed with CONSULT-II GST or Diagnostic Test Mode II (Self-diagnostic Results).

OK or NG

GO TO 13.

GO TO 12.

REPAIR MALFUNCTION

Repair or replace components as necessary according to corresponding “Diagnostic Procedure”.

GO TO 11.

TROUBLE DIAGNOSIS — BASIC INSPECTION

SR20DE

Basic Inspection (Models without Throttle Opener) (Cont’d)

EC-641

CHECK TARGET IDLE SPEED

With CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Select “ENG SPEED” in “DATA MONITOR” mode with CONSULT-II.
3. Check idle speed.

700

50 rpm

Without CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.

700

50 rpm

OK or NG

GO TO 22.

GO TO 14.

PERFORM IDLE AIR VOLUME LEARNING

Refer to “Idle Air Volume Learning”, EC-57
Which is the result CMPLT or INCMP?

CMPLT or INCMP

CMPLT

GO TO 15.

INCMP

1. Follow the instruction of “Idle Air Volume Learning”.
2. GO TO 14.

CHECK TARGET IDLE SPEED AGAIN

With CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Select “ENG SPEED” in “DATA MONITOR” mode with CONSULT-II.
3. Check idle speed.

700

50 rpm

Without CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.

700

50 rpm

OK or NG

GO TO 20.

GO TO 16.

REPLACE IACV-AAC VALVE

Replace IACV-AAC valve.

GO TO 17.

PERFORM IDLE AIR VOLUME LEARNING

Refer to “Idle Air Volume Learning”, EC-581
Which is the result CMPLT or INCMP?

CMPLT or INCMP

CMPLT

GO TO 18.

INCMP

1. Follow the instruction of “Idle Air Volume Learning”.
2. GO TO 14.

TROUBLE DIAGNOSIS — BASIC INSPECTION

SR20DE

Basic Inspection (Models without Throttle Opener) (Cont’d)

EC-642

CHECK TARGET IDLE SPEED AGAIN

With CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Select “ENG SPEED” in “DATA MONITOR” mode with CONSULT-II.
3. Check idle speed.

750

50 rpm

Without CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.

750

50 rpm

OK or NG

GO TO 20.

GO TO 19.

CHECK ECM FUNCTION

1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of a problem, but this is rarely

the case.)

2. Perform initialization of NATS system and registration of NATS ignition key IDs. Refer to “NATS (Nissan Anti-Theft

system)”, EC-597

GO TO 14.

CHECK IGNITION TIMING

1. Start engine and warm it up to normal operating temperature.
2. Check ignition timing at idle using a timing light.

SEF984U

Ignition timing

15°

2° BTDC

OK or NG

GO TO 28.

GO TO 21.

CHECK TIMING CHAIN INSTALLATION

Check timing chain installation. Refer to EM section.

OK or NG

GO TO 19.

1. Repair the timing chain installation.
2. GO TO 14.

TROUBLE DIAGNOSIS — BASIC INSPECTION

SR20DE

Basic Inspection (Models without Throttle Opener) (Cont’d)

EC-643

CHECK IGNITION TIMING

1. Start engine and let it idle.
2. Check ignition timing at idle using a timing light.

SEF984U

Ignition timing:

15°

2° BTDC

OK or NG

GO TO 28.

GO TO 23.

PERFORM IDLE AIR VOLUME LEARNING

Refer to “Idle Air Volume Learning”, EC-581.
Which is the result CMPLT or INCMP?

CMPLT or INCMP

CMPLT

GO TO 24.

INCMP

GO TO 23.

CHECK TARGET IDLE SPEED AGAIN

With CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Select “ENG SPEED” in “DATA MONITOR” mode with CONSULT-II.
3. Check idle speed.

750

50 rpm

Without CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.

750

50 rpm

OK or NG

GO TO 26.

GO TO 15.

CHECK ECM FUNCTION

1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of a problem, but this is rarely

the case).

2. Perform initialization of NATS system and registration of NATS ignition key IDs. Refer to “NATS (Nissan Anti-Theft

System)”, EC-597.

GO TO 23.

TROUBLE DIAGNOSIS — BASIC INSPECTION

SR20DE

Basic Inspection (Models without Throttle Opener) (Cont’d)

EC-644

DTC Inspection Priority Chart

NLEC1370

If some DTCs are displayed at the same time, perform inspections one by one based on the following prior-
ity chart.

Priority

Detected items (DTC)

P0100 Mass air flow sensor

P0110 Intake air temperature sensor

P0115 Engine coolant temperature sensor

P0120 Throttle position sensor

P0325 Knock sensor

P0340 Camshaft position sensor

P0403 EGR volume control valve (where fitted)

P0500 Vehicle speed sensor

P0605 ECM

P0335, P1336 Crankshaft position sensor (OBD)

P1320 Ignition signal

P1605 A/T diagnostic communication line

P1706 Park/Neutral position switch

P0130 - P0134 Heated oxygen sensor 1 (front)

P0135 Heated oxygen sensor 1 heater (front)

P0137 - P0140 Heated oxygen sensor 2 (rear)

P0141 Heated oxygen sensor 2 heater (rear)

P0443 EVAP canister purge volume control solenoid valve

P0510 Closed throttle position switch

P0705 - P0725, P0740 - P1791 CVT related sensors, solenoid valves and switches

P1217 Overheat (Cooling system)

P1401 EGR temperature sensor (where fitted)

P0171, P0172 Fuel injection system function

P0300 - P0304 Misfire

P0400, P1402 EGR function (where fitted)

P0420 Three way catalyst function

P0505 IACV-AAC valve

P1778 CVT step motor function

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

SR20DE

DTC Inspection Priority Chart

EC-646

Fail-safe Chart

=NLEC1371

The ECM enters fail-safe mode if any of the following malfunctions is detected due to the open or short cir-
cuit. When the ECM enters the fail-safe mode, the MI illuminates.

DTC No.

Detected items

Engine operating condition in fail-safe mode

CON-

SULT-II

GST

ECM*1

P0100

0100

Mass air flow sensor
circuit

Engine speed will not rise more than 2,400 rpm due to the fuel cut.

P0115

0115

Engine coolant tempera-
ture sensor circuit

Engine coolant temperature will be determined by ECM based on the time
after turning ignition switch “ON” or “START”.
CONSULT-II displays the engine coolant temperature decided by ECM.
The radiator fan operates.

Condition

Engine coolant temperature decided

(CONSULT-II display)

Just as ignition switch is turned
ON or Start

40°C (104°F)

More than approx. 4 minutes
after ignition ON or Start

80°C (176°F)

Except as shown above

40 - 80°C (104 - 176°F)

(Depends on the time)

P0120

0120

Throttle position sensor
circuit

Throttle position will be determined based on the injected fuel amount and
the engine speed. Therefore, acceleration will be poor.

Condition

Driving condition

When engine is idling

Normal

When accelerating

Poor acceleration

Unable to
access
ECM

Unable to
access
Diagnostic
Test Mode
II

ECM

ECM fail-safe activating condition
The computing function of the ECM was judged to be malfunctioning.
When the fail-safe system activates (i.e., if the ECM detects a malfunction
condition in the CPU of ECM), the MI on the instrument panel lights to warn
the driver.
However it is not possible to access ECM and DTC cannot be confirmed.
Engine control with fail-safe
When ECM fail-safe is operating, fuel injection, ignition timing, fuel pump
operation and IACV-AAC valve operation are controlled under certain limita-
tions.

ECM fail-safe operation

Engine speed

Engine speed will not rise more than
3,000 rpm

Fuel injection

Simultaneous multiport fuel injection sys-
tem

Ignition timing

Ignition timing is fixed at the preset value

Fuel pump

Fuel pump relay is “ON” when engine is
running and “OFF” when engine stalls

IACV-AAC valve

Full open

Replace ECM, if ECM fail-safe condition is confirmed.

*: In Diagnostic Test Mode II (Self-diagnostic results)

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

SR20DE

Fail-safe Chart

EC-647

Symptom Matrix Chart

NLEC1372

SYSTEM — ENGINE CONTROL SYSTEM

NLEC1372S01

SYMPTOM

Reference
page

HARD/NO

T/REST

(EXCP

HA)

ENGINE

ALL

HESIT

TION/SURGING/FLA

SPOT

ARK

KNOCK/DET

ONA

TION

LACK

POWER/POOR

ACCELERA

TION

HIGH

IDLE/LOW

IDLE

ROUGH

IDLE/HUNTING

IDLING

VIBRA

TION

SLOW/NO

RETURN

IDLE

OVERHEA

TS/W

TER

TEMPERA

TURE

HIGH

EXCESSIVE

FUEL

CONSUMPTION

EXCESSIVE

OIL

CONSUMPTION

TTER

DEAD

(UNDER

CHARGE)

Warranty symptom code

AG AH

AM HA

Fuel

Fuel pump circuit

EC-1032

Fuel pressure regulator system

EC-578

Injector circuit

EC-1021

Evaporative emission system

EC-573

Air

Positive crankcase ventilation sys-
tem

EC-576

Incorrect idle speed adjustment

EC-623

IACV-AAC valve circuit

EC-863, 995

Ignition

Incorrect ignition timing adjust-
ment

EC-623

Ignition circuit

EC-900, 1004

EGR
(where
fitted)

EGR volume control valve circuit

EC-841

EGR system

EC-834, 841,
921

Main power supply and ground circuit

EC-671

Air conditioner circuit

HA section

1 - 6: The numbers refer to the order of inspection.
(continued on next page)

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

SR20DE

Symptom Matrix Chart

EC-648

Nissan Almera Tino V10 (2001 year). Manual - part 67