Contents Wiring diagrams Section: Communication Devices All sections

Data Link Communications System Buick Roadmaster VIII

Communication Devices 9 illustrations
WARNINGVehicles are equipped with air bag supplemental restraint system. Before attempting any repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in appropriate AIR BAG RESTRAINT SYSTEMS article.
CAUTIONWhen battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.
ComponentLocation
Assembly Line Diagnostic Link ConnectorAttached To Instrument Panel Carrier, Right Of Steering Column. (Scheme 1)
Diagnostic Energy Reserve ModuleDriver Side Of Instrument Panel, Above Convenience Center. (Scheme 2)
Electronic A/C Control Assembly (C68)Center Of Instrument Panel. (Scheme 3)
Electronic Brake Control ModuleDriver Side Of Engine Compartment, On Inner Fender Panel. (Scheme 2)
Engine Control ModuleAttached To Base Of Passenger Side "A" Pillar. (Scheme 4)
Power Steering Control ModuleLeft Of Steering Column, Above Fuse Block
Power Steering Solenoid ActuatorAttached To Power Steering Actuator
C200 (56 Terminals)Body Harness To Instrument Panel Harness, Bolted Above Accelerator Pedal. (Scheme 1)
C204 (37 Terminals)Body Harness To Engine Harness, Behind Passenger Side Of Instrument Panel Between Blower Motor & Instrument Panel Compartment. (Scheme 4)
G104Passenger Rear Cylinder Head, Below Exhaust Manifold. (Scheme 5)
P100Passenger Side Of Instrument Panel, Forward Of Blower Motor. (Scheme 6)
P101Passenger Side Of Instrument Panel, Right Of ECM. (Scheme 7)
S109Engine Harness, Near A/C Pressure Cycling Switch Connector Breakout
S240Body Harness, Near Turn/Hazard Switch Connector Breakout
S250Engine Harness, In C204 Branch Near Connector
S252Body Harness, In ALDL Branch Near Connector
S265Body Harness, Near P102 In Passenger Compartment
S266Body Harness, Near Turn/Hazard Switch Connector Breakout

COMPONENT LOCATIONS

Scheme 1
Scheme 2
Scheme 3
Scheme 4
Scheme 5
Scheme 6
Scheme 7
Scheme 8: CONNECTOR IDENTIFICATION
Scheme 9: WIRING DIAGRAMS