35-42
SERVICE BRAKES
Anti-lock Braking System Troubleshooting
ABS warning light illuminated after the engine is started and remains on.
[Explanation]
This is the symptom when the ABS ECU does not
power up due to broken ECU power circuit, etc.,
when the fail safe function operates and isolates the
system or when the warning light drive circuit is
short circuited.
Check the on-board diagnostic output and if there
no output voltage or if the scan tool and ABS ECU
cannot communicate, there is a good possibility
that power is not flowing to the ECU.
Caution
l
If there is no output of diagnostic trouble
codes, there is a good possibility that the
fail safe is functioning.
MAIN
FUSIBLE
LINK
IGNITION
SWITCH
I
10
HU
I
I
I
9
Non-Turbo
Turbo
Non-Turbo
Is there on-board diagnostic
No
CONTINUE TO
output? (Is there
NEXT PAGE
cation with scan tool?)
I
Yes
Does diagnostic trouble
code output display normal
codes?
. Check, using the
tic trouble code check
chart. (Refer to
I
Short in harness between
ECU and ABS warning
Repair harness
or replace
combination meter.
TSB Revision
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