A041

Circuit Description
This DTC is designed to detect a slipping right front ESB. During initialization and braking, the right front motor is rehomed. If the ESB slips, the motor/piston will move. During the next ignition "ON" initialization, are home of the motor verifies that the motor/piston remained at the home position. If motor movement is detected, the ESB must be slipping.

Failure Condition
DTC A041 can be set during initialization. If the EBCM detects that the ESB could not hold the piston in the home position, a malfunction exists. DTC A086 is always set with DTC A041.

Action Taken
If an ESB cannot hold a piston in the home position. the piston may be backdriven when the brake pedal is applied, causing the brake pedal to drop. DTCs A041 and A086 are stored. ABS is disabled and the "ABS" and "BRAKE" indicators are turned on.

Test Description
Number(s) belowreferr to circled number(s) on the diagnostic chart.
1. This step checks the right front ESB. A broken or defective ESB would result in the right front piston being backdriven by hydraulic pressure and pedal movement would result.
2. This test checks for high resistance in the right front motor high circuit.
3. This test checks for high resistance in the right front motor low circuit.
4. This test checks for high resistance in the right front motor.
5. This test determines if the fault is due to poor terminal contact or corrosion.
6. This test determines if the fault is due to a faulty EBCM.

Diagnostic Aids
An "intermittent" malfunction in this DTC may result from a mechanical part of the system that sticks, binds or slips.

The frequency of the malfunction can be checked by using the enhanced diagnostic feature of the TECH I as described in "TECH 1 Diagnostics."

The static modulator test function of the TECH 1 may be used to locate an intermittent malfunction associated with the ESB.