Cruise Main Indicator Light Circuit [08/2015 - 08/2019]: Description

WARNING: This page is about a different car, the 2019 Toyota 4Runner, 2018 Toyota 4Runner, 2017 Toyota 4Runner, and 2016 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

When the ECM detects a cruise control switch on signal from the cruise control switch, it sends it to the combination meter through CAN communication. Then the cruise main indicator light turns on.
The cruise main indicator light circuit uses CAN communication. If there is a malfunction in this circuit, check for DTCs in the CAN communication system before troubleshooting this circuit.