Engine Control Module: Service and Repair

Control Module S/T PUP:

CAUTION
[a] The ignition must be "OFF," when disconnecting or reconnecting the control module connector, to prevent internal damage to the control module.

[b] To prevent possible Electrostatic Discharge to the control module, Do NOT touch the connector pins or soldered components on the circuit boards.

NOTE When replacing a production control module with a service controller, transfer the broadcast code and production control module part number to the controller label. DO NOT record information on the access cover.

REMOVE or DISCONNECT
- Negative battery terminal.
- Dash panel below glove box.
- Control module retaining screw and Control module.
- Control module harness connectors.
- Mounting brackets and modules if equipped.
- Remove new control module from its packaging and check the service number to make sure it is the same as the defective control module.
- PROM removal. Refer to PROM (MEM-CAL) replacement.

NOTE
Replacement control module is supplied without a PROM, so care should be used when removing it from the defective control module, because it will be reused in the new control module.

INSTALL or CONNECT
- Mounting brackets and modules if equipped.
- Control module harness connectors.
- VSS buffer connector, if equipped.
- Dash panel below glove box.
- Negative battery terminal.
- Perform functional check.