Preparatory Instructions

Emissions Recall No. 90E-A01

# 027 Motronic Control Unit Update EPROM Exchange Instructions


Preparatory

Instructions: The installation of the updated EPROM into the Motronic Control Unit is a simple procedure.

However before beginning the EPROM exchange, the following conditions must be provided and the designated tools must be used.

ENVIRONMENT

The work area where the EPROM is exchanged must be free of excessive dust and aggressive chemicals or vapors. A small uncarpeted office within the dealership is recommended. Since low atmospheric humidity promotes static electricity, an evaporating bowl of water can be used to raise the humidity of the work area.

EQUIPMENT

Screwdrivers (blade and phillips) are only used to open and close the Motronic Control Unit. The EPROM is exchanged using an IC extractor/inserter set. All California dealers will receive this tool via automatic tool shipment. If additional tool sets are needed, they can be obtained locally (Radio Shack, Archer # 276-1581).

STATIC ELECTRICITY


The Motronic Control Unit can be damaged and rendered unusable by static electrical discharge. For this reason the 3M static protection kit (or equivalent) must be used during the entire EPROM exchange procedure. See S.I. 04 30 87 (1546) for complete details.

EPROM STORAGE

Replacement EPROMs must be stored in the original VELOSTAT(TM) shipment containers used by the Parts system. The label in the center of the EPROM must never be removed.