• Do not exceed the limits shown in the table below:
FUNCTION INPUT LIMIT
Volts 0 - 500 peak volts AC
0 - 500 volts DC
Ohms (resistance)* 0 -1.12 megohms
Frequency Measured
Frequency Generated
0-10kHz
Temperature -58 - 1100°F
-50 - 600°C
* Ohms cannot be measured if voltage is present.
Ohms can be measured only in a non-powered
circuit.
• Voltage between any terminal and ground must
not exceed 500v DC or 500v peak AC.
• Use caution when measuring voltage above 25v
DC or 25v AC.
• Use the low current shunt to measure circuits up
to 10A. Use the high current clamp to measure
circuits exceeding 10A.
• When testing for the presence of voltage or cur-
rent, make sure the meter is functioning cor-
rectly. Take a reading of a known voltage or
current before accepting a zero reading.
• When measuring current, connect the meter in
series with the load.
• Disconnect the live test lead before disconnecting
the common test lead.
• 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
COMPONENTS 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 DRBIIT 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 System Load Tool
8443 SRS Airbag System Load Tool
6.0 GLOSSARY OF TERMS
ABS antilock brake system
ACM airbag control module
ACT actuator
AECM airbag electronic control module
(ACM)
BCM body control module
CAB controller antilock brake
DAB driver airbag
DLC data link connector
DTC diagnostic trouble code
DR driver
EBL electric back lite (rear window de-
fogger)
HE hall effect
HVAC heater ventilation, air conditioning
LCD liquid crystal display
24
GENERAL INFORMATION
To Next Page
Loading...
