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![NISSAN LATIO 2009 Service Repair Manual EC
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[Air conditioner, headlamp, rear window defogger]
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is
started the headlamp will not be illumi NISSAN LATIO 2009 Service Repair Manual EC
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[Air conditioner, headlamp, rear window defogger]
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is
started the headlamp will not be illumi](/manual-img/5/57359/w960_57359-1928.png)
EC
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[Air conditioner, headlamp, rear window defogger]
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is
started the headlamp will not be illuminated.
• Steering wheel: Neutral (Straight-ahead position)
• Vehicle speed: Stopped
• Transmission: Warmed-up
- Models with CONSULT-III (A/T and CVT models)
• Drive vehicle until “FLUID TEMP SE” in “DATA MONI TOR” mode of “A/T” or “CVT” system indicates less
than 0.9V.
- Models without CONSULT-III (A/T and CVT models) and M/T models
• Drive vehicle for 10 minutes.
OPERATION PROCEDURE
With CONSULT-III
1. Perform EC-572, " Accelerator Pedal Released Position Learning " .
2. Perform EC-572, " Throttle Valve Closed Position Learning " .
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREP ARATION (previously mentioned) are in good order.
5. Select “IDLE AIR VOL LEA RN” in “WORK SUPPORT” mode.
6. Touch “START” and wait 20 seconds.
7. Make sure that “CMPLT” is displayed on CONSULT-III screen. If “CMPLT” is not displayed, Idle Air Vol-
ume Learning will not be carried out successfully. In this case, find the cause of the incident by referring to
the DIAGNOSTIC PROCEDURE below.
8. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications.
Refer to EC-566, " Basic Inspection " .
Without CONSULT-III
NOTE:
• It is better to count the time accurately with a clock.
• It is impossible to switch the di agnostic mode when an accelerator pedal position sensor circuit has
a malfunction.
1. Perform EC-572, " Accelerator Pedal Released Position Learning " .
2. Perform EC-572, " Throttle Valve Closed Position Learning " .
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREP ARATION (previously mentioned) are in good order.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Confirm that accelerator pedal is fully releas ed, turn ignition switch ON and wait 3 seconds.
7. Repeat the following procedure quick ly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops
blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the MIL turned ON.
10. Start engine and let it idle.
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![NISSAN LATIO 2009 Service Repair Manual EC-574< SERVICE INFOMATION >
[MR TYPE 1]
BASIC SERVICE PROCEDURE
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure that idle speed and ignition timing are w NISSAN LATIO 2009 Service Repair Manual EC-574< SERVICE INFOMATION >
[MR TYPE 1]
BASIC SERVICE PROCEDURE
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure that idle speed and ignition timing are w](/manual-img/5/57359/w960_57359-1929.png)
EC-574< SERVICE INFOMATION >
[MR TYPE 1]
BASIC SERVICE PROCEDURE
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications. Refer to EC-566, " Basic Inspection " .
13. If idle speed and ignition timing are not within the specification, Idle Air Volume Learning will not be carried out successfully. In this case, find the cause of the incident by referring to the DIAGNOSTIC PROCE-
DURE below.
DIAGNOSTIC PROCEDURE
If idle air volume learning cannot be performed successfully, proceed as follows:
1. Check that throttle valve is fully closed.
2. Check PCV valve operation.
3. Check that downstream of throttl e valve is free from air leakage.
4. When the above three items check out OK, engine component parts and their installation condi-
tion are questionable. Check and elim inate the cause of the incident.
It is useful to perform EC-618 .
5. If any of the following conditio ns occur after the engine has st arted, eliminate the cause of the
incident and perform Idle Air Vo lume Learning all over again:
- Engine stalls.
- Erroneous idle.
Fuel Pressure Check INFOID:0000000004537050
FUEL PRESSURE RELEASE With CONSULT-III
1. Turn ignition switch ON.
2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT” mode with CONSULT-III.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel pressure.
5. Turn ignition switch OFF.
Without CONSULT-III
ITEM SPECIFICATION
Idle speed M/T: 700 ± 50 rpm (in Neutral position)
A/T: 700 ± 50 rpm (in P or N position)
CVT: 700 ± 50 rpm (in P or N position)
Ignition timing M/T: 13 ± 5 ° BTDC (in Neutral position)
A/T: 13 ± 5 ° BTDC (in P or N position)
CVT: 13 ± 5 ° BTDC (in P or N position) SEC897C
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1. Remove fuel pump fuse (1) located in IPDM E/R (2).
• : Vehicle front
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel pressure.
4. Turn ignition switch OFF.
5. Reinstall fuel pump fuse after servicing fuel system.
FUEL PRESSURE CHECK CAUTION:
Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:
• Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel
pressure cannot be completely released because C11 models do not have fuel return system.
• The fuel hose connection method u sed when taking fuel pressure check must not be used for other
purposes.
• Be careful not to scratch or put debris around connection area when servicing, so that the quick
connector maintains sealability with O-rings inside.
• Do not perform fuel pressure check with electrical syst ems operating (i.e. lights, rear defogger, A/C,
etc.) Fuel pressure gauge may indicate false readin gs due to varying engine load and changes in
manifold vacuum.
1. Release fuel pressure to zero. Refer to "FUEL PRESSURE RELEASE".
2. Prepare fuel hose for fuel pressure check B and fuel tube adapter (KV10118400) D, then connect fuel pressure gauge A.
• : To quick connector
• : To fuel tube (engine side)
• C: Clamp
• Use suitable fuel hose for fuel pressure check (genuine
NISSAN fuel hose without quick connector).
• To avoid unnecessary force or tension to hose, use moder- ately long fuel hose for fuel pressure check.
• Do not use the fuel hose for checking fuel pressure with dam- age or cracks on it.
• Use Pressure Gauge to check fuel pressure.
3. Remove fuel hose. Refer to EM-156 .
• Do not twist or kink fuel hose because it is plastic hose.
4. Connect fuel hose for fuel pressure check (1) to fuel tube (engine side) with clamp (2) as shown in the figure.
• No.2 spool (5)
• Wipe off oil or dirt from hose insertion part using cloth moist-
ened with gasoline.
• Apply proper amount of gasoline between top of the fuel tube (3) and No.1 spool (4).
• Insert fuel hose for fuel pressure check until it touches the No.1 spool on fuel tube.
• Use NISSAN genuine hose clamp (part number: 16439 N4710
or 16439 40U00).
• When reconnecting fuel line, always use new clamps.
• Use a torque driver to tighten clamps.
• Install hose clamp to the positi on within 1 - 2 mm (0.04 - 0.08 in).
• Make sure that clamp screw does not contact adjacent parts.
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![NISSAN LATIO 2009 Service Repair Manual TROUBLE DIAGNOSIS
EC-577
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Trouble Diagnosis Introduction INFOID:0000000004537051
INTRODUCTION The engine has an ECM NISSAN LATIO 2009 Service Repair Manual TROUBLE DIAGNOSIS
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INTRODUCTION The engine has an ECM](/manual-img/5/57359/w960_57359-1932.png)
TROUBLE DIAGNOSIS
EC-577
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Trouble Diagnosis Introduction INFOID:0000000004537051
INTRODUCTION The engine has an ECM to control major systems such as fuel con-
trol, ignition control, idle air control system, etc. The ECM accepts
input signals from sensors and instantly drives actuators. It is essen-
tial that both input and output signals are proper and stable. At the
same time, it is important that there are no malfunctions such as vac-
uum leaks, fouled spark plugs, or other malfunctions with the engine.
It is much more difficult to diagnose an incident that occurs intermit-
tently rather than continuously. Most intermittent incidents are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only may not find t he cause of the incidents. A road
test with CONSULT-III (or GST) or a circuit tester connected should
be performed. Follow the Work Flow on "WORK FLOW".
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A Diagnostic Worksheet like the example
on "Worksheet Sample" should be used.
Start your diagnosis by looking for conventional malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.
WORK FLOW MEF036D
SEF233G
SEF234G
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EC
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- Study the relationship betw een the cause detected by DTC* 1
and the symptom described by the cus-
tomer. (Symptom Matrix Chart is useful. Refer to EC-583, " Symptom Matrix Chart " .)
3. Check related service bulletins for information.
Is any symptom described and any DTC detected? Symptom is described, DTC*
1
is displayed>>GO TO 3.
Symptom is described, DTC* 1
is not displayed>>GO TO 4.
Symptom is not described, DTC* 1
is displayed>>GO TO 5. DTC Inspection Priority Chart " and determine trouble
diagnosis order.
NOTE:
• Freeze frame data* 2
is useful if the DTC* 1
is not detected.
• Perform Overall Function Check if DTC Confirmation Procedure is not included on Service Manual. This
simplified check procedure is an effective alternative though DTC* 1
cannot be detected during this check.
If the result of Overall Function Check is NG, it is the same as the detection of DTC* 1
by DTC Confirmation
Procedure.
Is DTC* Yes >> GO TO 10.
No >> Check according to EC-626 .
Basic Inspection " .
With CONSULT-III>>GO TO 7.
Without CONSULT-III>>GO TO 9. Inspection Procedure " .
Are they within the SP value? Yes >> GO TO 9.
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Diagnosis Procedure " .
Is malfunctioning part detected? Yes >> GO TO 11.
No >> GO TO 9. Symptom Matrix Chart " based on the confirmed symp-
tom in step 4, and determine the trouble diagnosis order based on possible causes and symptom.
>> GO TO 10. 25, " How to Perform Efficient Diagnosis for an Electrical Incident " .
Is malfunctioning part detected? Yes >> GO TO 11.
No >> Monitor input data from related sensors or check voltage of related ECM terminals using CON-
SULT-III. Refer to EC-597, " ECM Terminal and Reference Value " ,
EC-614, " CONSULT-III Refer-
ence Value in Data Monitor Mode " .
Emission-related Diagnostic Information " .
>> GO TO 12. NG (DTC*
1
is detected)>>GO TO 10.
NG (Symptom remains)>>GO TO 6.
OK >> 1. Before returning the vehicle to the customer, make sure to erase unnecessary DTC* 1
in ECM
and TCM (Transmission Control Module). (Refer to EC-542, " Emission-related Diagnostic
Information " and
AT-39, " OBD-II Diagnostic Trouble Code (DTC) " ,
CVT-209, " OBD-II Diag-
nostic Trouble Code (DTC) " .)
2. If the completion of SRT is needed, drive vehicl e under the specific driving pattern. Refer to
EC-542, " Emission-related Diagnostic Information " .
3. INSPECTION END
*1: Include 1st trip DTC.
*2: Include 1st trip freeze frame data.
DIAGNOSTIC WORKSHEET
Description