Refer to the scan tool manual for complete scan tool operating instructions.

Function Test

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The EBCM commands the system relay, valve solenoids and pump motor ON and OFF. The EBCM sets a DTC if a malfunction is detected.

Automated Bleed

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The EBCM commands each valve solenoid and the pump motor ON and OFF in a special sequence in order to bleed air out of the BPMV. Refer to Antilock Brake System Automated Bleed Procedure for a step-by-step procedure.

ABS Motor

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This function allows the technician to command the ABS pump motor On and Off.

System Identification

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The scan tool displays the hardware and software revision of the EBCM.

Tire Size Calibration

Important: The PCM must also be programmed with the correct tire size calibration when different size tires are installed on the vehicle. Refer to Service Programming System (SPS) in Programming.

This function allows the technician to read the tire size calibration of the EBCM or calibrate the EBCM to the correct tire size. Calibration must be performed when the EBCM is replaced or when different size tires are installed on the vehicle.

Solenoid Tests

This function allows the technician to command a selected valve solenoid On and Off. Use the procedure below in order to verify proper operation of the EBCM and BPMV.

Solenoid Test Procedure

1. Raise the vehicle so the wheels are about 15 cm (6 in.) off the floor. Refer to Lifting and Jacking the Vehicle in General Information.
2. Select the desired Solenoid Test on the scan tool.

Important: Steps 3, 4 and 5 must be performed within a 5 second time period. The EBCM will only energize a solenoid for 5 seconds.

3. Command the solenoid On.
4. Apply the brake.
5. Have an assistant attempt to spin the wheel of the brake circuit being tested. The wheel should spin even though the brake is being applied.

ABS Relay

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This function allows the technician to command the system relay On and Off.

Refer to the scan tool manual for complete scan tool operating instructions.

ABS Motor

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This function allows the technician to command the ABS pump motor On and Off.

Automated Bleed

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The EBCM commands each valve solenoid and the pump motor ON and OFF in a special sequence in order to bleed air out of the BPMV. Refer to Antilock Brake System Automated Bleed Procedure for a step-by-step procedure.

Left Front Brake Apply

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The EBCM enegizes the appropriate solenoids and the precharge pump motor to apply brake pressure to the left, front wheel. The precharge pump turns off after approximately 2 seconds, but the brake pressure is held for approximately 9 seconds. Refer to Brake Pressure Modulator Valve Hydraulic Testing for a step-by-step procedure.

Left Rear Brake Apply

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The EBCM enegizes the appropriate solenoids and the precharge pump motor to apply brake pressure to the left, rear wheel. The precharge pump turns off after approximately 2 seconds, but the brake pressure is held for approximately 9 seconds. Refer to Brake Pressure Modulator Valve Hydraulic Testing for a step-by-step procedure.

Pre-charge Bleed

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The EBCM commands both TC isolation valve solenoids on and energizes the precharge pump to bleed air from the precharge pump, combination valve and the hydraulic circuitry between these components. Refer to Antilock Brake System Automated Bleed Procedure for a step-by-step procedure.

Right Front Brake Apply

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The EBCM enegizes the appropriate solenoids and the precharge pump motor to apply brake pressure to the right, front wheel. The precharge pump turns off after approximately 2 seconds, but the brake pressure is held for approximately 9 seconds. Refer to Brake Pressure Modulator Valve Hydraulic Testing for a step-by-step procedure.

Right Rear Brake Apply

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The EBCM enegizes the appropriate solenoids and the precharge pump motor to apply brake pressure to the right, rear wheel. The precharge pump turns off after approximately 2 seconds, but the brake pressure is held for approximately 9 seconds. Refer to Brake Pressure Modulator Valve Hydraulic Testing for a step-by-step procedure.

Solenoid Tests

This function allows the technician to command a selected dump or isolation valve solenoid On and Off to verify proper operation of the BPMV. Refer to Brake Pressure Modulator Valve Hydraulic Testing for complete procedure instructions.

Request ABS/VSES Info. for SPS

Request Info.

This function allows you to request VIN and EBCM software information to be used when programming the EBCM using SPS.

Tire Size Calibration

Important: The Yaw Rate Reference Table Reset Procedure must also be performed if the tire size is changed. Refer to Yaw Rate Reference Table Resetting .

This function allows the technician to read the tire size calibration of the EBCM or calibrate the EBCM to the correct tire size. Calibration must be performed when the EBCM is replaced or when different size tires are installed on the vehicle.