WABCO 400 500 320 0, Руководство по обслуживанию

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Troubleshooting
When testing the Lift Axle system, ensure the trailer is supplied with a minimum of 100 psi air pressure
to the supply air and 12 volts DC power rated at a minimum of 10 amps to the trailer‘s constant power
circuit. Use of a volt-ohm meter may be required. A lift axle test rig may be built by the maintenance shop to
facilitate the testing of the lift axle system. See Figure 9.12.
The ability to raise the trailer‘s fi xed axles in order to conduct an end of line test may be required.
The TOOLBOX PLUS™ Software is necessary to activate the Automatic Lift Axle function in the iABS
Premium ECU. This process can be found in the Automatic Lift Axle Installation Manual, TP19039.
This troubleshooting section is based on the use of TOOLBOX PLUS™ Software version 13 or higher.
If you have an earlier version of software, visit
wabco.snapon.com
to purchase and download the latest
version of the software.
Condition
Experienced
Action to Take Troubleshooting Detail
s
Lift Axle
Function
Unavailable
in TOOLBOX
PLUS™
Software
Inspect WABCO iABS part
number.
Ensure that GIO-capable WABCO iABS is installed.
Only 400 500 350 0 and 400 500 430 0 have Automatic
Lift Axle functionality.
Verify the WABCO TOOLBOX
PLUS™ Software version.
Ensure TOOLBOX PLUS™ Software version 13.0 or
later is installed.
Lift Axle Will
Not Raise or
Lower
Recycle trailer power.
ECU valve should audibly click during its power-
up self-test. ABS warning light will illuminate and
extinguish as a light test. If warning light remains on,
begin diagnostics with TOOLBOX PLUS™ Software. If
the ECU fails to click, ensure that the sensor extension
cables and power cables are securely attached to the
ECU and ensure that 12 volts is present at pin B-1 on
the ECU power connector. Refer to Figure 9.1.
Retrieve diagnostic information
via TOOLBOX PLUS™
Software version.
When the trailer power is cycled, the trailer-mounted
ABS warning light will illuminate and extinguish as a
light test. If warning light remains on, begin diagnostics
with TOOLBOX PLUS™ Software. Repair and clear all
faults found.
Verify the lift axle function is
activated in TOOLBOX PLUS™
Software.
From the main screen of Trailer ABS diagnostics,
select the Modify pull-down. Select GIO con fi gurations
and active settings will be displayed.
Verify Lift Axle Control Valve
(LACV) cable P/N 449 408 XXX
0.
Ensure the LACV cable 449 408 XXX 0 is securely
fastened to the LACV and to the port 2 of HUB cable
P/N 894 600 121 2 connected at GIO 1.
Inspect HUB cable/s
894 600 121 2.
Ensure the HUB cable/s 894 600 121 2 is/are securely
fastened to the ECU and to the respective cables.
Refer to Figure 9.3.
Check lift axle control valve
cable integrity and it‘s
connection to HUB cable.
Using a volt/ohm meter, check for shorted or open
circuits on LACV cable 449 408 XXX 0. Ensure the
HUB cable 894 600 121 2 is securely fastened to the
ECU and to the LACV cable 449 408 XXX 0. Refer to
Figure 9.2.