BENDIX TABS-6 TRAILER ABS MODULE manual Troubleshooting Flowcharts, ABS Indicator Lamp Circuitry

Troubleshooting Flowcharts

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

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.

Troubleshooting Flowcharts

Section A : (Power-Up Sequence)
Trailer-Mounted ABS Indicator Lamp . . .	Page 23
Section B: (Power-Up Sequence)
Dash-Mounted ABS Indicator Lamp . . .	. Page 24
Section C: Diagnostic Trouble Code (DTC) Blink
Code Quick Reference	Page 25
Section D: Diagnostic Trouble Code
TRDU™ Tool LED Quick Reference . . . .	. Page 26
Section E: Troubleshooting the Trailer-Mounted
ABS Indicator Lamp Circuitry	. Page 27
Section F: Troubleshooting the Power Supply . . . .	Page 28
Section G: Troubleshooting the WS-24™Wheel
Speed Sensors	. Page 29
Section H: Troubleshooting the BR9235™ Modulator
Relay Valves	Page 30

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