I can't take credit for this but here is how to make your own for a couple bucks. It will work on MEFI 1-4 I believe.DIY Code ReaderMaterials needed:One 12volt resistor type LED light - Standard LED nothing special make sure it is a 12 VOLTOne small paper clip cut in halfThat's it!This home made code tool works every bit as well as the one I paid $50.00 for.
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It will work on most 1993 to 2000 marine EFI systems with the ten pin Data Link Connector. This includes MerCruiser, Volvo, Crusader, PCM, Indmar, and a few others.How to hook it up:1) Ignition key 'OFF'2) Remove the cap from the Data Link Connector (DLC)3) Slide the LED into the female terminals of position E and F on the DLC, making sure that the positive side goes into terminal F and the negative side into terminal E. No damage will occur if you get it backwards, it just won't work.4) Turn the ignition key to the 'ON' position. The LED should come on steady.5) Insert the half paper clip into terminals A and B. This puts the engine in 'Service Mode' and codes will begin to flash on the LED.
On 1996 and earlier engines you may hear the fuel pump come on. If not you should be able to hear the Idle Air Control (IAC) motor move. Use care in this step, do not insert in the wrong terminals or ECM damage could result!
Look closely, the terminals are clearly marked.6) Read codes by observing LED flashs. If the self diagnostic system is working it will flash code 12 (one flash, pause, two flashes, long pause) it will repeat three times. If other codes are present they will flash in order of lowest to highest. Continue to read codes until the code 12 sequence is repeated.You can also be clear codes (by moving the throttle to 100% and back) and set base timing while in Service Mode.
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MERCURY PARTS CAN ONLY BE SOLD AND SHIPPED TO ADDRESSES WITHIN THE UNITED STATES.Parts orders placed before 3:30pm EST will normally be shipped same day (if the item is in stock). If you need your parts asap, Fedex Overnight, second day air, etc., are also available (Deadline is 3:30pm Eastern time). Engine orders will be processed and shipped within 24-48 hours after payment-in-full is received. For special engine orders, shipping time is based on current stock and build time.Items under 75 pounds are sent via Fedex in Continental USA.
Items sent overseas are sent via fedex international, or air freight (depending on item weight). Fedex cannot ship to P.O. Boxes.All Packages over $175.00 will require Indirect Signature: FedEx obtains a signature from someone at the delivery address; from a neighbor, building manager or someone at a neighboring address; or the recipient can also leave a FedEx Door Tag authorizing release of the package without anyone present, or you can sign up for.Canadian ShipmentsRates for Standard service to and from Canada do not include charges for customs clearance. For shipments from Mexico, routine customs clearance is included. Customs brokerage charges, duties and taxes will be billed to the importer unless otherwise indicated by the shipper.
Some shipments to and from certain locations may require additional time in transit.Engine ShippingFor a shipping quote, please email or call (248) 524-9600 with your shipping address and contact information. We use different freight carriers to find you the lowest price AND safest delivery. Some of the freight carriers we use are: R&L Freight, Con-Way Freight, Estes Express, Pilot Air, USF Holland, Forward Air, Old Dominion, Overnight Express, Watkins, and Dayton Freight. Engines can be picked up at a local shipping terminal or dropped off at your location. Engines are packed in specially designed crates made for that engine.All oil & lubricating fluids are drained before they are sent out (this is required by our freight carriers). All engines & parts are packed by our shipping department.
Engines are then inspected by our shipping manager before they are loaded onto a freight carrier.Certain restrictions applyReturnsFor items received as described, a refund of the final invoice price (minus shipping and handling charges and a 15% restocking fee) will be issued. Buyer is responsible for return shipping costs and for sufficiently packing and insuring returned items unless otherwise agreed upon. Refunds will not be issued for damaged merchandise. All returns must be made within 15 days of delivery to you. No refunds for electronic parts if box is opened.
All returns must have a RMA # and invoice #. 15% restocking fee on the return of any complete engine. Please call or email for a RMA #.Returns must be shipped to:Michigan Motorz, LLC32333 Mally DriveMadison Heights, MI 48071(248) 524-9600If parts arrive damaged in shipment, it is the customers responsibility to notify the carrier immediately and reject the damaged package. Contact Michigan Motorz of the potential damage. A claim will be filed and we will send out the identical part. If parts are damaged in shipment and the customer does not notice damage, please call Michigan Motorz, LLC.= No Sales Tax OUTSIDE the state of Michigan.
Orders placed over the phone or though our website will be charged 6% for sales tax within the state of Michigan. For items received as described, a refund of the final invoice price (minus shipping and handling charges and a 15% restocking fee) will be issued. Buyer is responsible for return shipping costs and for sufficiently packing and insuring returned items unless otherwise agreed upon. Refunds will not be issued for damaged merchandise.
All returns must be made within 15 days of delivery to you. No refunds for electronic parts if box is opened. All returns must have a RMA # and invoice #.
15% restocking fee on any complete engine. Please call or email for a RMA #.Returns must be shipped to:Michigan Motorz32333 Mally DriveMadison Heights, MI 48071If parts arrive damaged in shipment, it is the customers responsibility to notify the carrier immediately and reject the damaged package. Contact Michigan Motorz of the potential damage. A claim will be filed and we will send out the identical part. If parts are damaged in shipment and the customer does not notice damage, please call Michigan Motorz LLC.