Montero Sport LS 2WD V6-3.0L SOHC (1998)
Electronic Brake Control Module: Testing and Inspection
Description and Fault Judgement Criteria
DESCRIPTION AND FAULT JUDGEMENT CRITERIA
CIRCUIT OPERATION
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The battery positive voltage is applied on the ABS-ECU from the ECM (terminal 66) via the resistor in the ECM.
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The ABS-ECU turns the power transistor in the ABS-ECU unit "ON" when the motor relay is driven and grounds the terminal to which the
battery positive voltage is applied. With this, the voltage in the ECM changes from high to low and the ECM detects that the ABS-ECU is
driving the motor relay.
