Power Up Sequence

The PCM conducts a power up sequence every time the ignition is turned from the OFF to the START position. The power up sequence is carried out only with the electronically controlled CVT gear selector in the PARK position. During the power up sequence the PCM:

• initializes and begins controller area network (CAN) communications with the TCM and the BECM.
• checks for TCM error status.
• requests the BECM to close the high voltage contactors.
• enables the DC/DC converter.
• illuminates the green ready indicator indicating the vehicle is ready to drive in electric, gasoline, or a combination of electric and gasoline modes.
• if required, starts the internal combustion engine. The internal combustion engine starts if it is required for cabin heating, windshield defrost or the outside temperatures are low. The internal combustion engine also starts if the high voltage battery charge is low.

If a concern is detected during the power up sequence, the PCM may initiate LOS mode and store a DTC.