DTC 47 - Left Front Motor Free Spins: Notes

EBCM can detect a stripped nut or gear assembly during initialization. During the homing sequence, the piston should reach the top of the bore, resulting in a stalled motor. If this does not occur, the motor must be spinning with little or no resistance. This indicates a nut/screw or gear malfunction.

1. Checks to see if the corresponding open motor DTC is also set.
2. Verifies motor was actually applied as commanded by observing feedback current.
3. Verifies motor can release.
4. Verifies that motor can be applied by observing pedal movement.
5. Checks for high resistance in motor low circuit. Tester J 39200 is a DVOM with a 10-megohm input impedance.
6. Checks for high resistance in motor high circuit.
7. Checks for proper resistance of motor.
8. Checks for a stripped gear on the motor pack.
9. Checks for stripped gear on the hydraulic modulator.
10. Ensures that motor can be applied under a load situation.
11. Checks for a faulty hydraulic modulator.
12. Ensures malfunction is not due to poor terminal contact.