Troubleshooting Flowcharts - BENDIX TABS-6 TRAILER ABS MODULE Manual

Diagnostic trouble code information can be retrieved from
the TABS-6 module by using blink code diagnostics, or a
diagnostic tool. The following troubleshooting flow charts
will help the technician isolate the cause of the fault and
confirm whether the fault 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 module's power-up sequence. If it is necessary


Troubleshooting Flowcharts

Troubleshooting Flowcharts
Section A : (Power-Up Sequence)
Trailer-Mounted ABS Indicator Lamp . . . . . . . Page 3
Section B: (Power-Up Sequence)
Dash-Mounted ABS Indicator Lamp . . . . . . . . Page 4
Section C: Diagnostic Trouble Code (DTC) Blink
Code Quick Reference . . . . . . . . . . . . . . . . . . . Page 5
Section D: Diagnostic Trouble Code
TRDU Tool LED Quick Reference . . . . . . . . . Page 6
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Section E: Troubleshooting the Trailer-Mounted
ABS Indicator Lamp Circuitry . . . . . . . . . . . . . Page 7
Section F: Troubleshooting the Power Supply . . . . . . . . . Page 8
Section G: Troubleshooting the wS-4
Speed Sensors . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
Section H: Troubleshooting the BR935
Relay Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 30
to make electrical measurements, always begin by taking
voltage and resistance measurements at the 5 or 18-pin
ECU pigtail harness connector.
Once the circuit fault 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.
wheel
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Modulator
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