WABCO iABS 2S/1M Standard Maintenance Manual page 169

Troubleshooting
Condition
Experienced
Integrated
Speed
Switch
Function Will
Not Activate
Door Ajar
is not
Functioning
Action to Take
Cycle trailer power.
Ensure that Door Ajar system is
connected correctly.
Verify the correct cable is used.
Check the Door Ajar Cable
connection at ECU.
Retrieve diagnostic information
via TOOLBOX PLUS™
Software.
Ensure that Door Ajar function
is activated.
Check the plumbing and
electrical connections.
s
Troubleshooting Detail
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.
Refer to Figures 9.30 and 9.31 for correct installation.
Ensure that Door Ajar Cable, P/N 449 827 XXX 0 is
used.
Check if Door Ajar Cable, P/N 449 827 XXX 0 is
connected at GIO port 1. Refer to Figures 9.30 and
9.31 for correct installation
Make sure that cable is fully seated and secured at
GIO port 1.
Check for active faults with TOOLBOX PLUS™
Software and repair all faults found.
From the main screen of Trailer ABS diagnostics,
select the Modify pull-down. Select GIO confi gurations
and active settings will be displayed. If it is not
activated then follow the procedures to activate the
function.
Refer to Figures 9.30 and 9.31 for correct installation.
169