BENDIX TABS-6 User Manual

34
SectionA:(Power-UpSequence)Trailer‑Mounted ABS Indicator Lamp ...............Page 34
SectionB:(Power-UpSequence)Dash‑Mounted ABS Indicator Lamp ................Page 35
Section C: Troubleshooting the Trailer‑Mounted ABS Indicator Lamp Circuitry .......Page 36
SectionD:Troubleshooting the Power Supply...................................Page 37
SectionE:Troubleshooting the WS‑24
™
Wheel Speed Sensors.....................Page 38
Section F: Troubleshooting the Load Sensor (Out‑of‑Range Condition)..............Page 39
Diagnostic trouble code information can be retrieved
from the Bendix
®
TABS‑6
™
Adv MC module by using blink
code diagnostics, or a diagnostic tool. The following
troubleshootingowchartswillhelpthetechnicianisolate
thecauseandconrmwhethertheproblemresidesinthe
component, wiring or connectors.
Troubleshooting should always begin by observing the
dash or trailer‑mounted ABS indicator lamp during the
TABS-6Adv MC module's power-up sequence.  If it is
necessary to take electrical measurements, always begin
by taking voltage and resistance measurements at the
7-pinECUpigtailharnessconnector.
Oncethesourceoftheproblemisfound,isolatethearea
needing repair by repeating the measurements at all
connections in the affected circuit towards the modulator,
wheel speed sensor, etc.
Novoltageorresistancemeasurementsaretobemade
on the bulkhead connector pins of the module.
Troubleshooting: Flowcharts
SECTION A: POWER‑UP SEQUENCE ‑ TRAILER‑MOUNTED
ABS INDICATOR LAMP
ObservetheABSIndicatorLamp
atPower-Up
Apply ignition or brake light power
Troubleshoot the trailer‑mounted
ABS indicator lamp circuitry.
Go to Section C
Troubleshoot
the trailer‑
mounted ABS
indicator lamp
circuitry. Go to
Section C
The module is functioning normally.
NoservicetotheABSunitisneeded.
Does
the
trailer‑mounted
ABS indicator lamp
immediately illuminate when
power is applied to the
trailer?
Doesthe
trailer‑mounted ABS
indicatorlampstay“ON”for
6.5 seconds and then
turn“OFF”?
NO
NO
YES
YES
Doesthe
trailer‑mounted ABS
indicatorlampstay“ON”for
2.5 seconds and then
turn“OFF”?
NO
PerformEnd-of-Linetest
YES

BENDIX TABS-6 Specifications

General

Type	Trailer ABS Module
Operating Temperature Range	-40°C to +85°C
Protection Rating	IP67
Category	Automobile Accessories
Voltage	12V/24V
Communication	J1587/J1939
Mounting	Frame Mount
Manufacturer	BENDIX
System Type	ABS
Number of Channels	4S/2M