• When using the meter function, keep the
DRBIIIt away from spark plug or coil wires to
avoid measuring error from outside interference.
4.3 WARNINGS
4.3.1 VEHICLE DAMAGE WARNINGS
Before disconnecting any control module, make
sure the ignition is ‘‘off’’. Failure to do so could
damage the module.
When testing voltage or continuity at any control
module, use the terminal side (not the wire end) of
the connector. Do not probe a wire through the
insulation, this will damage it and eventually cause
it to fail because of corrosion. Be careful when
performing electrical tests so as to prevent acciden-
tal shorting of terminals. Such mistakes can dam-
age fuses or components. Also, a second code could
be set, making diagnosis of the original problem
more difficult.
4.3.2 ROAD TESTING A COMPLAINT
VEHICLE
Some complaints will require a test drive as part
of the repair verification procedure. The purpose of
the test drive is to try to duplicate the diagnostic
code or symptom condition.
WARNING: REASSEMBLE ALL COMPO-
NENTS BEFORE ROAD TESTING A VEHICLE.
DO NOT TRY TO READ THE DRBIIIT SCREEN
OR OTHER TEST EQUIPMENT DURING A
TEST DRIVE. DO NOT HANG THE DRBIIIT OR
OTHER TEST EQUIPMENT FROM THE
REARVIEW MIRROR DURING A TEST DRIVE.
HAVE AN ASSISTANT AVAILABLE TO
OPERATE THE DRBIIIT OR OTHER TEST
EQUIPMENT. FAILURE TO FOLLOW THESE
INSTRUCTIONS CAN RESULT IN PERSONAL
INJURY OR DEATH.
5.0 REQUIRED TOOLS AND
EQUIPMENT
DRBIIIt (diagnostic read-out box)
Jumper Wires
Ohmmeter
Voltmeter
Test Light
8310 Airbag Load Tool
8443 SRS Airbag System Load Tool
6.0 GLOSSARY OF ACRONYMS
ABS antilock brake system
ACM airbag control module
AECM airbag electronic control module
(ACM)
ASDM airbag system diagnostic module
(ACM)
BUX built-up export
CAB controller antilock brake
CTM compass/temperature mirror
DAB driver airbag
DLC data link connector
DTC diagnostic trouble code
EMIC electro/mechanical instrument
cluster
LSIACM left SIACM
NGC next generation controller
PAB passenger airbag
PCI Programmable Communication
Interface (vehicle communication
bus)
PCM powertrain control module
PDC power distribution center
PWM pulse width modulated
RKE remote keyless entry
RSIACM right SIACM
SAB side airbag
SIACM side impact airbag control module
SKIM sentry key immobilizer module
SKIS sentry key immobilizer system
SQUIB also called initiator (located in rear
of airbag module)
TCM transmission control module
VFD vacuum fluorescent display
VTSS vehicle theft security system
14
GENERAL INFORMATION
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