Mitsubishi 1992 3000GT, Service Manual

Page: 886 / 1308

SERVICE BRAKES
Anti-lock Braking System Troubleshooting
Inspection Procedure 3
ABS warning light is not lighted with the ignition key
turned ON (stationary engine).
Probably light power supply circuit is open-circuited, light bulb has burned out or
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Fuse blown
circuit between warning light and ABS-ECU is open-circuited.
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ABS warning light bulb burned out.
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Harness, connector defective
Refer to check procedure for blown
fuse.
Measure at connector D-16.
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Disconnect connectors and
make measurements on female
connector.
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Ignition switch: ON
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State of warning light when
terminal No. 6 grounded
Light comes on.
OK
between ABS-ECU
and connector D-16 and repair if
Inspection procedure 4
Check that bulb has not burned out. Replace ABS warning light bulb.
OK
N G
D-l 6, D-04, D-44, C-71, C-82
OK
Check trouble symptoms. Replace combination meter.
ABS warning light does not go out after turning ON of the
ignition switch.
ABS warning light lighting circuit is probably short-circuited.
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Combination meter defective
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ABS-ECU defective
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Harness defective (shorted)
NOTE
This trouble symptom is limited to the where communication with scan tool is possible (ABS-ECU
power supply is normal) and diagnostic code is normal code.
Disconnect D-16 connectors. Is ABS warning light lighted
with the ianition switch turned ON?
Replace combination meter.
Disconnect ABS-ECU connector E-12.
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Ignition switch: ON
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Does ABS warning light go out?
NO
YES
Replace ABS-ECU.
Check harness between combination meter and ABS-ECU,
and repair if necessary.
TSB Revision