This rate equals a wheel speed of approximately 4 mph 7 kph. Abs troubleshooting for trucks trailers and buses step 4 blink codes for wabco d version ecu use the table to identify abs faults from the ecu blink codes recorded in step 3 blink code identification and system response links to solutions for common abs faults can also be found below. Truck tractor and bus abs blink code diagnostics all c version ecus includes additional 6s 6m and 6s 4m blink codes introduction the wabco electronic control unit ecu uses a pattern of light flashes called a blink code to identify specific problems or f aults. If the trailer lamp still does not go out, a system fault exists. While true that the blue wire will disconnect the light, I just realized that you are probably in Ontario or Quebec with your Manac trailer, and it probably has lift axles.
. Active faults are those currently existing in the system, such as a broken wire. If the indicator lamp comes on for three seconds and goes out: This indicates a correct installation. Push the sensor into its holder until it contacts the tooth wheel. The information contained in this manual was current at time of publication and i s subject to change without notice or liabil ity.
Active faults can be cleared only after repairs are completed. The mutt can be used to access abs blink codes on trailers equipped with abs systems trailers equipped with abs feature an abs control unit ecu which detects any electrical fault in the trailer abs most trailers with abs will also have a to access meritor wabco blink codes you must select the auxiliary circuit to power. One thing you can try, and this will sound stupid, is slide under the trailer and give each of the wheel sensors a tap with a hammer. Abs troubleshooting for trucks trailers and buses step 3 blink code identification and system response if you are unsure how to read abs blink codes from the ecu start by familiarising yourself with diagram below and then where appropriate follow the step by step procedure in the table. Turn off the power off for a moment.
The end of line test is complete. This will be repeated three times 7. Turn the power back on 4. Turn on power to the blue wire for no more than five seconds. If light goes off after a few seconds there is no active fault.
Use constant power activation to perform the following fault code check. Don't ask me how or why this would work, but it has for me. See above diagram for more detail. After performi ng the necessary repairs, repeat the end of line test to verify correct sensor installation. Failure to use special tools when required can cause serious per sonal injury to service personnel, as well as damage equipment and components.
Repeat Step 1 and Step 2. Adjus t the sensor and, if necessary , perform a fault code check. At installation, there must be no gap between the sensor and the tooth wheel. Each of the faults has a code. Otherwise continue to step 5. You had best leave it connected if you are running a lift axle on the wagon.
The end of line test is complete. This method is for constant power vehicles only. Y ou must follow company procedures and under stand all procedures and in structions before you begin to service or repair a unit. A well charged 12 volt battery is the recommended source for a tester. This circuit must be powered on and off in proper sequence. The value should be 0.
Keywords: wabco, heavy, truck, component, brakes, brake, system, nexiq, abs, software, suite, pro, link, pro-link, iq, graphic, meritor, plc, application, card, hydraulic, atc, systems, system, cartridge, anti-lock, anti, lock, braking, e, version, ecu, ecus, 12-volt, 12, volt, trucks, tractor, tractors, busses, pc, vehicle, interface, package, 15, foot, ft, usb, cable, blue, tooth, bluetooth, wireless, nexiq, wvl2, link. Repeat the sensor installation check. Perform a fault code check. After a short delay the warn lamp will flash several quick times followed by a longer pause. This is why it is important to recheck the blink codes after repairing a fault. Count the quick flashes to get the fault blink code. The blue wire is also the wire providing power to the switch for your lift axles.
Check cabling for short or no circuit, hub for excessive runout, exciter ring for damage, and sensor gap. The fault code will be displayed three times. If there are additional codes in the memory, they only blink after you have repaired the first fault. This can be done by turning the key switch on a properly wired tractor connected to the trailer or switching the auxliary blue circuit using a light tester or other suitable means. There are two kinds of faults: active and stored.