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ECM Service Procedure For Non CALIFORNIA Vehicles (94-01-009-1)

Publication date: 1994-06-01
Reference number: 94-01-009-1

ECM SERVICE PROCEDURE FOR NON CALIFORNIA VEHICLES

ECM SERVICE PROCEDURE FOR NON CALIFORNIA VEHICLES

TECHNICAL SERVICE BULLETIN

Reference Number(s): 94-01-009-1, Date of Issue:  June, 1994

1993-94 SCOUPE ENGINE CONTROL MODULE SERVICE PROCEDURE (except California Residents)

Model(s): 1993-94 Hyundai Scoupe

Group: Campaign

Bulletin No.: 94-01-009-1

Date: June, 1994

NOTE: This TSB has been revised to include new Campaign Operation codes and updated part numbers.

SERVICE PROCEDURE

ECM EPROM Replacement

Some 1993 and 1994 Scoupes may set a check engine light with no fault code stored. To correct this condition the EPROM must be replaced inside the Engine Control Module. Below are the instructions for replacing the EPROM in the Naturally Aspired and Turbocharged models. Some California specification vehicles may not be operating in federal areas. These vehicles can be identified by their underhood emission sticker and require the appropriate California specification EPROM (refer to the parts information chart.)

Naturally Aspirated

  1. Disconnect the negative battery cable. Remove the Engine Control Module (ECM) from the vehicle following the instructions in the Shop Manual.
  2. With the bottom side up on the ECM, bend the ten tabs straight up to release the cover from the base and separate.
  3. Locate the EPROM. It is located under the removable white retainer. Remove the white retainer. Lift the EPROM from the socket straight up with equal pressure.
    Fig 1: EPROM Retainer Location
    G94G53252
  4. Install the new EPROM carefully with the notch in the EPROM matching the notch in the socket. Use extreme caution not to bend the pins of the EPROM. Reinstall the white retainer.
    Fig 2: EPROM Notch Matching Socket Notch
    G94H53253
  5. Place the cover over the base. Turn the ECM upside down and bend the ten tabs down to fasten the base to the cover.
  6. Install the ECM into the vehicle.
  7. Open the left door and place a punch mark over the 11th character on the B-Pillar identification plate. This will indicate that the campaign procedures have been completed.
Fig 3: Eleventh Mark Identification
G94I53254

Turbocharged

  1. Disconnect the negative battery cable. Remove the Engine Control Module (ECM) from the vehicle following the instructions in the Shop Manual.
  2. With the bottom side up on the ECM, bend the ten tabs straight up to release the cover from the base and separate. Be sure to retain the plastic shield for reassembly.
  3. Use a pliers to remove the retaining pin, located on the bottom of the ECM.
    Fig 4: Remove the Retaining Pin
    G94J53255
  4. Grip the ECM from the back side and, using your thumb against the base, pop the two boards apart.
    Fig 5: Pop Boards Apart
    G94A53256
  5. Place a screwdriver under the upper board tabs as shown in Fig. Fig 6 . Pry up one side at a time until the upper board is removable from the connector. Pull the upper board rearward until the pins clear the connector and tilt the board up and back to remove the EPROM.
    Fig 6: Pry Boards Apart
    G94B53257
  6. Locate the EPROM. It is located under the removable white retainer on the bottom side of the upper board. Remove the white retainer. Lift the EPROM from the socket straight up with equal pressure.
    Fig 7: Remove EPROM
    G94C53258
  7. Install the new EPROM carefully with the notch in the EPROM matching the notch in the socket. Use extreme caution not to bend the pins of the EPROM. Reinstall the white retainer.
    Fig 8: Install New EPROM
    G94D53259
  8. Reposition the upper board into the connector and snap the tabs into place. Then place the plastic sheet over the top board and then the cover over the base. Turn the ECM upside down and bend the ten tabs down to fasten the base to the cover. Reinstall the retaining pin.
  9. Reinstall the ECM into the vehicle.
  10. Open the door and place a punch mark over the 11th character on the B-Pillar identification plate. This will indicate that the campaign procedures have been completed.
Fig 9: Plate Mark Location Eleven
G94G53260

Effective Production Date:

  • 1993 All
  • 1994 thru 12/30/93 production
PARTS INFORMATION

Part Name Current New Model
EPROM N/A 39111-22A00 93 MY Naturally Aspirated (FED)
EPROM N/A 39111-22A10 93 MY Naturally Aspirated (CAL)
EPROM N/A 39111-22A20 94 MY Naturally Aspirated (CAL and FED)
EPROM N/A 39111-22A51 93 MY Turbocharged (CAL and FED)
CAMPAIGN CLAIM INFORMATION

Model Model Year Operation Code Operation OP Time OP QTY
Scoupe 1993 - 1994 410012R0 ECM EPROM Replacement Naturally Aspirated 0.5 1
Scoupe 1993 - 1994 410012R1 ECM EPROM Replacement Turbocharged 0.6 1
Submit claims for the above campaign operation code using the campaign claim entry screen.
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