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when I disconnect the pump motor from the ABS ECU the short circuit is still there, the short circuit disappears only when I disconnect the connectors from the ABS ECU, it seems to me that the ABS ECU is short circuited, is this possible?"when I disconnect the connectors from the ABS everything is ok": I'm assuming you mean the fuse will not blow, but you have no boosted brakes?
The ABS MTR circuit powers the booster motor. The purpose of the booster motor is to pump high pressure brake fluid into the accumulator. If there is a short in the motor windings or in the external wiring, the fuse would blow. If the motor is stuck, the current draw could also be too high and blow the fuse.
Two common failure modes are corrosion on the motor wiring connector to the ABS module and worn out brushes/commutator.
Fault code C0278, C1223, C1253, C1256when I disconnect the pump motor from the ABS ECU the short circuit is still there, the short circuit disappears only when I disconnect the connectors from the ABS ECU, it seems to me that the ABS ECU is short circuited, is this possible?
when I disconnect the pump motor from the ABS ECU the short circuit is still there, the short circuit disappears only when I disconnect the connectors from the ABS ECU, it seems to me that the ABS ECU is short circuited, is this possible?
Fault code C0278, C1223, C1253, C1256"when I disconnect the connectors from the ABS everything is ok": I'm assuming you mean the fuse will not blow, but you have no boosted brakes?
The ABS MTR circuit powers the booster motor. The purpose of the booster motor is to pump high pressure brake fluid into the accumulator. If there is a short in the motor windings or in the external wiring, the fuse would blow. If the motor is stuck, the current draw could also be too high and blow the fuse.
Two common failure modes are corrosion on the motor wiring connector to the ABS module and worn out brushes/commutator.
motor pump its ok"when I disconnect the connectors from the ABS everything is ok": I'm assuming you mean the fuse will not blow, but you have no boosted brakes?
The ABS MTR circuit powers the booster motor. The purpose of the booster motor is to pump high pressure brake fluid into the accumulator. If there is a short in the motor windings or in the external wiring, the fuse would blow. If the motor is stuck, the current draw could also be too high and blow the fuse.
Two common failure modes are corrosion on the motor wiring connector to the ABS module and worn out brushes/commutator.