Initialization Sequence

The EBCM performs one initialization test each ignition cycle. The initialization of the EBCM occurs when one set of the following conditions occur:

Both of the following conditions occur:

• The EBCM receives that there is a minimum of 500 rpm from the PCM via class 2 serial data message.
• The stoplamp switch is not applied.

or

Both of the following conditions occur:

• The vehicle speed is greater than 16 km/h (10 mph).
• The stoplamp switch is applied.

The initialization sequence may also be commanded with a scan tool.

The initialization sequence cycles each solenoid valve and the pump motor (as well as the necessary relays) for approximately 1.5 seconds to check component operation. The EBCM sets a DTC if any error is detected. The initialization sequence may be heard and felt while it is taking place, and is considered part of normal system operation.

The EBCM defines a drive cycle as the completion of the initialization sequence.