Honda Odyssey Service Manual: HondaVAC™ System Description

This system is composed of the rear MICU, the HondaVAC switch, the HondaVAC motor, the HondaVAC motor relay, and the keyless buzzer.

The rear MICU controls the HondaVAC motor relay based upon one or more of the following conditions:

• Vehicle ignition mode

• Transmission range switch P position

• Vehicle speed

• HondaVAC switch ON/OFF position

• Operating time of HondaVAC motor

• Engine running condition

• State of charge of the battery

Under certain conditions, the green LED indicator may come ON and the HondaVAC motor will either shut off or not start. In addition, the POWER SAVE indicator may turn on. See the chart below.