What are CANH and CANL reset initialization values when CAN Transceiver goes to sleep ?

Attached is CAN Transceiver Datasheet. This IC is wired in our Microcontroller based Electronic Control Unit.

What will be CAN High (CANH) and CAN Low (CANL) Voltage when CAN Transceiver is in sleep mode?

To verify these voltages are correct in sleep mode, measure CANH with respect to ground? And measure CANL with respect to Ground?

These are differential signals. They can only be measured against each other.