172
Troubleshooting
Fig. 9.32
4013861
a
PROXIMITY
SWITCH
P/N 446 147 XXX 4
MAGNETS
WIRE
LEADS –
POWER AND
GROUND
9.6 Integrated Speed Switch System
ECUs 400 500 350 and 400 500 430 0 (Premium iABS units) are the only trailer ABS ECU/valve
assemblies that have the capability of the Integrated Speed Switch System feature being able to be
activated and turned on.
The
fi
rst step that should be taken when troubleshooting the Integrated Speed Switch System is to ensure
that the system is connected correctly. Refer to Figures 9.33 and 9.34 in this section for the correct
schematic, depending upon the override switch con
fi
guration.
For additional information, refer to TP19031, Integrated Speed Installation Manual, available at
www.wabco-na.com.
This troubleshooting section is based on the use of TOOLBOX PLUS™ Software version 13 or higher. If
you have an earlier version of TOOLBOX™ Software, visit
wabco.snapon.com
to purchase and download
the latest version of the software.
Condition
Experienced
Action to Take
Troubleshooting Detail
s
Integrated
Speed
Switch
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 Speed
Switch functionality.
Verify the WABCO TOOLBOX
PLUS™ Software version
Ensure TOOLBOX PLUS™ Software version 13.0 or
later is installed.
Integrated
Speed
Switch
Function Will
Not Activate
Cycle 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 are securely attached to the ECU.
Ensure that speed switch
system is connected correctly.
Refer to Figures 9.33 and 9.34 for correct installation.
Verify the correct cable is
used to connect the output
component.
Ensure that Speed Switch Cable, P/N 449 827 XXX 0
is used.
Содержание 400 500 320 0
Страница 148: ...148 Troubleshooting Fig 9 9 4017182a...
Страница 149: ...149 Troubleshooting Fig 9 10 4017180a...
Страница 150: ...150 Troubleshooting Fig 9 11 4017173a...
Страница 156: ...156 Troubleshooting Fig 9 15 4017183a...
Страница 157: ...157 Troubleshooting Fig 9 16 4017187a Fig 9 17 4012475b 3 2 SOLENOID VALVE CABLE P N 472 170 997 0 1 2...
Страница 174: ...174 Troubleshooting Fig 9 35 4017186a...
Страница 187: ...187 Notes Notes...