ABS TROUBLESHOOTING <Vehicles built up May, 1994> · 8

ABS TROUBLESHOOTING <Vehicles built up May, 1994> · 8

MANUALS · SERVICE BRAKES [35] · страница 8 из 140 · Открыть оригинал PDF ↗

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Check the trouble symptoms by the following procedure, &nd inspect according to the instructions_

Before the engine starts, does the ABS warning
lamp illuminate?

(1) With the ignitionkey in the "ONposition,
the ABS-ECU causes the ABS warning lamp
toilluminateforapproximatelysecond
(during this time, the initial check is carried
out), and then the lamp switches off

(2)With the ignitionkeyin theSTARTposi-
tion, power to the ABS-ECU is cut; and be-

causethevalve relayturnsOFFtheABS
warning lamp remains illuminated.
(3) Whenthe ignitionkeyis turned from the
"STARTpositionbacktotheONposi-
tion, theABS warning lamp illuminates for
approximatelysecond (duringthistime
the initialcheck. is carriedout once more)
and then the lamp switches off,

Иллюстрация 1, страница 8
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YesTo next pageNo
NoTrouble symptomMain causeRemedy
The ABS w
illuminate a
ABS
warning
lamp
Ignition
key
arning lamp does not
t all:
Illuminated
Not
illuminated
START
ON
ACC, LOCK
1440590
ABS warning lamp bulb failure
Broken wire in the ABS warning
lamp power circuit (including blown
fuse).
Inspect according
to Flow Chart A
(Refer to P.35-13).
When the
the ABS wa
ABS
warning
lamp
Ignition key
key
ignition
is turned to "ON"
rning lamp remains illuminated
Illuminated
Not
illuminated
START
ON
ACC, LOCK
1440591
Fail safe function is operated by
the ABS-ECU self-diagnosis_
Short in the ABS-ECU warning
lamp drivve circuit
ABS-ECU is defective
Inspect according
to Flow Chart
(Refer to P.35-16) .
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