RAM 3500 Truck 4WD V8-5.9L VIN Z LDC (2000)
User-Requested COLD Boot
Press MORE to switch between this display and the application screen.
Press F4 when done noting information.
DRB III Does Not Power UP (Blank Screen)
If the LED's do not light or no sound is emitted at start up, check for loose cable connections or a bad cable. Check the vehicle battery voltage
(data link connector cavity 16). A minimum of 11 volts is required to adequately power the DRB.
If all connections are proper between the DRB and the vehicle or other devices, and the vehicle battery is fully charged, an inoperative DRB may
be the result of faulty cable or vehicle wiring.
DRB Scan Tool
Display Is Not Visible
Low temperatures will affect the visibility of the display. Adjust the contrast to compensate for this condition.
WARNINGS
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 accidental shorting of terminals. Such mistakes can damage fuses or components. Also,
a second code could be set, making diagnosis of the original problem more difficult.
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.
CAUTION: BEFORE ROAD TESTING A VEHICLE, BE SURE THAT ALL COMPONENTS ARE REASSEMBLED. DURING THE TEST
DRIVE, DO NOT TRY TO READ THE DRB SCREEN WHILE IN MOTION. DO NOT HANG THE DRB FROM THE REAR VIEW
MIRROR OR OPERATE IT YOURSELF. HAVE AN ASSISTANT AVAILABLE TO OPERATE THE DRB.
REQUIRED TOOLS AND EQUIPMENT
DRB III (diagnostic read-out box)
Jumper Wires
Ohmmeter
Voltmeter
GLOSSARY OF ACRONYMS
ACM airbag control module
AECM airbag electronic control module also called ACM
ASDM airbag system diagnostic module also called ACM
CCD Chrysler Collision Detection (vehicle communications bus)
CTM central timer module
DAB driver airbag
DLC data link connector