Replacement of EPROM

REPLACEMENT OF EPROM




EPROM kit contents:

- EPROM
- Sticker "Scrap"
- Sticker "Volvo ID No.-" (9434245-8, 9434246-6 or 9434247-4)

METHOD:




Turn ignition off

Remove control unit fuse no. 1.

Disconnect the connector from the control module.

IMPORTANT:
To avoid damage to the control module, ensure that there is no power to the control module when connecting or disconnecting the connector.




Remove the screws retaining the control module. Remove the control module from vehicle.

WORK AREA AND SPECIAL TOOLS




Carry out the replacement of the EPROM in a permanent working area not directly attached to the work shops. The location must be clean, e.g. free from dust, dirt, oil, solvents, etc. The work must be carried out on a static dissipation mat. The mat must be kept clean and be grounded by connecting it to a grounded system, water pipe or another reliable grounding point.

Special tools

- Static dissipation mat
- EPROM extractor tool
- EPROM insertion tool

Small pliers and screwdrivers

All tools used must be Electrostatic Dissipative (ESD) approved.

To prevent condensation inside the control module it must have been at an ambient room temperature of 72°F (22°C), for at least an hour before opening it.




Place the static dissipation mat on a clean surface. Connect the ground wire to a suitable ground point (see illustration)

WASH YOUR HANDS IN WARM SOAP AND WATER. DO NOT APPLY HAND LOTION AFTER WASHING.

Caution: Attach both the wrist strap and static dissipative mat to the same ground point.




Fit the wrist strap around one wrist (to eliminate static electricity), adjust wrist strap to fit snugly.




Place the control unit upside down on the static dissipation mat. Using a small screwdriver, open the control unit by bending the tabs up. Fully open them with pliers. All tools must be ESD approved.




Turn the control module over so that the cover is up. Place the control module so the connector is away from you.

Carefully lift the cover making sure that it does not come in contact with the components on the circuit board.

REMOVE THE EPROM COVER

Insert a small screwdriver (ESD approved) in each slot on the cover and pry carefully.




When it is loose, lift it.




Mark the EPROM with the "scrap" sticker provided in the kit; this will prevent it from being reinstalled in error.




Place the extractor over the EPROM to be removed, pressing the grips together until the prom pops up.

Put the EPROM aside.

Note:
DO NOT re-use the replaced EPROM.

Remove the new EPROM from the kit and open the EPROM box.

Caution:
Do not touch the EPROM




Extract the new EPROM using the insertion tool (press in the button on the side of the tool when applying the tool over the EPROM).

Check that none of the pins on the new EPROM are bent.




(If a pin is bent, loosen the EPROM, place it over the gray pant of the shaft on the tool, and gently straighten the pins).




Important:
Sign the notch in the EPROM with the notch in the socket base.

Carefully locate the EPROM and press it down with the insertion tool. Do not press the button. Remove the tool and check that all pins are correctly located in the socket.




Install the EPROM cover. It must be securely closed.

Install the control unit cover carefully.




Bend the tabs down using ESD approved pliers.

Caution:
To avoid damaging internal components, DO NOT use excessive force on the case when closing it. Do not, under any circumstances, bang or hammer on the control unit. Do not place it in a vise.

Make sure that the cover is secure and all tabs are tight.




Write date and dealer code under the figures on the new "Volvo" ID No. label, and place it on the top of the the existing "Volvo" ID No. label on the control unit.

Leave part of the old label visible (10 digit Bosch number) however; cover the bar code.




crew the control module into place. Connect the connector to the control module.




Remount fuse no. 1.

Reset any DTC's set.

Test drive the car, verify repair.