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Post Info TOPIC: Supporting Materials


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Supporting Materials
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September 12, 2007



TO: All Honda Sales, Service & Parts Managers



FROM: American Honda Service Division



RE: 2008 Accord 4 Cylinder Knock Sensor False Detection Update





Last week Honda Motor Co. issued an iN message to the dealer network announcing a Pre Delivery Update Campaign for both Sayama and HAM-produced 2008 Accord 4 cylinder models. The message contained a link to the software patch download and installation procedures. The supporting Service Bulletin was placed online Friday morning, 9/7/07.



Today, 9/12/07, the 2008 Accords are available for sale at your dealership.



As a reminder, under this campaign all affected vehicles must be updated PRIOR TO SALE.



Basic Problem

Some 2008 Accord 4 cylinders may experience an intermittent lack of power during acceleration due to interference/noise with the knock sensor signal circuit. Interference or noise on this circuit can cause the PCM to retard the ignition timing, causing a decrease in engine power, usually during acceleration.



Supporting Materials

A Service Bulletin was issued 9/07/07. The Bulletin details the repair procedure and warranty reimbursement information. The software patch required to reflash the control unit was sent to the dealer network on 9/5/07.

Note: The new software version (V6.09.04) must be loaded to the HDS Tablet before the control unit can be successfully updated.

Campaign Parts

This campaign only requires a software update to the engine control unit. No parts are required.



Repair Strategy

Initial 2008 Accord L4 vehicles being shipped to your dealer will require updating.



Cars currently at the port are being repaired before delivery to the dealerships. A red adhesive dot is applied to the left rear quarter glass to indicate the update was applied to the car.



Both factories have also applied the countermeasure we are currently updating our Service Bulletin with this information.



If you are unsure if a vehicle requires updating, please check the VIN using the VIN Status Inquiry on iN.


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