Contents Wiring diagrams Section: Communication Devices All sections

Data Link Communications System Chevrolet Caprice IV

Communication Devices 6 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.

For component locations, see COMPONENT LOCATIONS table.

ComponentLocation
Data Link Connector (DLC)Attached To Instrument Panel Carrier, Right Of Steering Column. (Scheme 1)
Diagnostic Energy Reserve Module (DERM)Driver Side Of Instrument Panel, Above Convenience Center. (Scheme 2)
Electronic Brake Control Module (EBCM)Driver Side Of Instrument Panel, Above Convenience Center. (Scheme 2)
Engine Control Module (ECM)Attached To Base Of Passenger "A" Pillar. (Scheme 3)
C204 (37 Terminals)Body Harness To Engine Harness, Behind Passenger Side Of Instrument Panel, Between Blower Motor and Instrument Panel Compartment. (Scheme 3)
G104Passenger Cylinder Head, Below Exhaust Manifold. (Scheme 4)
P100Passenger Side Of Instrument Panel, Forward Of Blower Motor. (Scheme 3)
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 DLC Branch Near Connector

COMPONENT LOCATIONS

Scheme 1
Scheme 2
Scheme 3
Scheme 4

For DLC connector identification (Scheme 5)

Scheme 5: CONNECTOR IDENTIFICATION
Scheme 6: Identifying Data Link Connector Circuits

See also:
COMPONENT LOCATIONS