Mitsubishi 3000GT Service Manual page 280

ANTI-LOCK BRAKING SIGNAL <Turbo>
Engine control module connector
OPERATION
The anti-lock braking signal is input to the engine control module from the anti-lock braking system
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(ABS) control module as a signal to indicate whether or not the motor relay is activated. Based
on this signal, the engine control module controls the idle air control motor to secure effective anti-lock
braking.
When the motor relay is activated, the ABS control unit turns ON the power transistor, short-circuiting
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the terminal to ground. This causes the anti-lock braking signal to go from high to low.
HARNESS INSPECTION
Engine
side connector
MULTIPORT On-Vehicle Inspection of MFI
FUEL INJECTION - Comnonents
A ABS control unit
equipment side connector
control moduls
Check for an open-circuit or a
short-circuit to ground, between
the ABS control unit and the en-
gine control module.
ABS control unit connector:
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Disconnected
Engine control module con-
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nector: Disconnected
TSB Revision
ABS ECU
A
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Engine
control
module