Engine - DTC's P0300/P0301-P0304 Set

2010 Nissan-Datsun Altima L4-2.5L (QR25DE) Hybrid Technical Service Bulletin # 10-056A Date: 100625

Engine - DTC's P0300/P0301-P0304 Set

Classification: EC10-005A

Reference: NTB10-056A

Date: June 25, 2010

2007 - 2010 ALTIMA HYBRID; DTC P0300 - P0304

This bulletin has been amended. Notes were added to "ECM Reprogram", Step 3. No other changes have been made. Discard all previous copies.

APPLIED VEHICLE: 2007 - 2010 Altima Hybrid (L32HV)

APPLIED VINs:

2007-2009 all VINs

2010 built before VIN 1N4CL2AP(*)AC 155521

APPLIED DATE: Built on or before April 9th, 2010

IF YOU CONFIRM

The vehicle has more than 15,000 miles on the odometer, and DTC P0300, P0301, P0302, P0303, and/or P0304 is stored.

NOTE:

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This incident may also include engine running rough and/or vehicle vibration on deceleration.

ACTION

Refer to the Diagnostic Flow Chart.

NOTE:

If the vehicle has 15,000 miles or less on the odometer, this bulletin does not apply.

IMPORTANT SERVICE INFORMATION:

^ HEV vehicles have unique operating characteristics. The internal combustion engine has a higher frequency of start/stop cycles than a

conventional vehicle.

^ Under certain customer driving patterns this high frequency of start/stop engine cycles can result in increased carbon build up on the exhaust

valves and/or exhaust ports. Sometimes these carbon deposits may cause the engine to run rough.

^ The amount of carbon build up is highly dependent on the driving pattern of the customer.

^ Carbon build up is not always the root cause of a rough running HEV engine.

IMPORTANT:

The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire Service

Procedure as it contains information that is essential to successfully completing this repair.

CLAIMS INFORMATION

If an incident is identified and resolved with the Diagnostic Inspection:

Submit a Primary Part (PP) type line claim using the following claims coding:

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Refer to the current Nissan Warranty Flat Rate Manual and use the appropriate coding for the repairs performed.

AND in combination on the same repair line

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PARTS INFORMATION

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DIAGNOSTIC FLOW CHART

Diagnostic Inspection

DIAGNOSTIC INSPECTION

Refer to section EC in the Service Manual under "P0300, P0301, P0302, P0303, P0304 MISFIRE" for details on the following inspection items.

1. Check operation of ignition coils and spark plugs.

2. Check fuel pressure.

3. Check fuel quality and condition make sure diesel fuel has not been introduced into the fuel tank.

4. Check intake air leaks and PCV hose connections.

5. Check function of fuel injectors - listen to each fuel injector operating sound.

6. Check MASS AIR FLOW SENSOR.

7. Check A/F SENSOR.

8. Check idle speed and ignition timing.

9. Check items under "ROUGH IDLE/HUNTING" in the symptom chart.

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^ Symptom chart is located in Section EC under SYMPTOM DIAGNOSIS.

10. Some tests may cause a 1st trip DTC to be set - erase any 1st trip DTCs from the ECM.

11. Check exhaust system for dents that would restrict exhaust flow.

ECM Reprogram

ECM REPROGRAM

1. Connect CONSULT III (C-III) to the vehicle to begin the reprogramming procedure.

CAUTION

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin applies as follows:

A. On your C-III screen, look at the Part Number column (see Figure 1 example).

^ If this column is blank (no part number listed), this bulletin does not apply.

^ If a Part Number is listed, write it on the Repair Order and then go to Step B.

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B. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number column in Table A above.

^ If there is a match, this bulletin applies. Continue with the reprogramming procedure.

NOTE:

If there are two lines (two reprogramming options) on your C-III screen, use the one that does not have the message "Caution! Use ONLY with

NTBXX-XXX".

^ If there is not a match, this bulletin does not apply.

3. If this bulletin applies and you have performed ECM reprogramming; when reprogramming is complete, the screen in Figure 2 displays.

NOTE:

If the screen in Figure 2 does NOT display (reprogramming does NOT complete), click here. This links to the ECM Reprogram Interruption

Recovery General Procedure.

4. Make sure to erase all DTCs from all Systems.

NOTE:

During reprogramming, DTCs will set in several systems. These DTCs must be erased from all systems.

5. Disconnect C-III, start the engine and make sure the MIL (Check Engine light) is OFF.

^ If the Check Engine light comes ON, go back to ASIST for further diagnostic information.

^ Diagnosis and repairs beyond those needed for the symptoms / issues listed under "IF YOU CONFIRM" are not covered by this bulletin.

6. Use C-III to perform IAVL.

^ Engine Sub-System > Work Support > IAVL Function

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