S15/T15 Sonoma P/U 2WD V6-262 4.3L VIN W CPI (1994)
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.