could be displayed by the DRBIII
t
. The following
are characteristics of diagnostic mode:
•
The amber ABS warning indicator will blink
rapidly (about
1
⁄
2
second on and
1
⁄
2
second off). If
a hard trouble code is present, such as a CAB
Power Feed Circuit diagnostic trouble code, the
ABS warning indicator will be illuminated with-
out blinking until the diagnostic trouble code
condition is corrected.
•
Antilock operation is disabled.
3.3.3
INTERMITTENT DIAGNOSTIC
TROUBLE CODES
If the malfunction is not present while perform-
ing a test procedure, the diagnostic procedures will
not locate the problem. In this case, the code can
only suggest an area to inspect. Check for the
following:
•
mechanical interference with brake or accelera-
tor pedal
•
loose or corroded conditions
•
damaged components (sensors, tone wheels,
pedal drive cable)
•
damaged wiring
•
excessive axle shaft runout
•
loose pedal mounting
•
hydraulic system leaks
•
regular brake system problems, non-ABS related
If no obvious problems are found, erase diagnostic
trouble codes and with the key on, wiggle the wire
harness and connectors. Recheck for codes periodi-
cally as you work through the system. This proce-
dure may uncover a difficult to locate malfunction.
3.4
USING THE DRBIII
T
Refer to the DRBIII
t
user’s guide for instructions
and assistance with reading diagnostic trouble
codes, erasing diagnostic trouble codes and other
DRBIII
t
functions.
3.5
DRBIII
T
ERROR MESSAGES
Under normal operation, the DRBIII
t
will dis-
play one of only two error messages:
—
User-Requested
WARM
Boot
or
User-
Requested COLD Boot
If the DRBIII
t
should display any other error
message, record the entire display and call the
STAR Center for information and assistance. This
is a sample of such an error message display:
ver: 2.14
date: 26 Jul93
file: key_itf.cc
date: Jul 26 1993
line: 548
err: 0x1
User-Requested COLD Boot
Press MORE to switch between this display
and the application screen.
Press F4 when done noting information.
3.5.1
DRBIII
T
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
16-way connector cavity 16). A minimum of 11 volts
is required to adequately power the DRBIII
t
. Also
check for a good ground at the DLC.
If all connections are proper between the
DRBIII
t
and the vehicle or other devices, and the
vehicle battery is fully charged, an inoperative
DRBIII
t
may be the result of faulty cable or vehicle
wiring.
3.5.2
DISPLAY IS NOT VISIBLE
Low temperatures will affect the visibility of the
display. Adjust the contrast to compensate for this
condition.
4.0
DISCLAIMERS, SAFETY,
WARNINGS
4.1
DISCLAIMERS
All information, illustrations, and specifications
contained in this manual are based on the latest
5
GENERAL INFORMATION
