Introduction To Cruise Control System Diagnosis

WARNING: This page is about a different car, the 2020 Mitsubishi Outlander PHEV. However, it is still accessible from the selected car via links, so may be relevant.

The cruise control system allows driving without stepping on the accelerator pedal by setting a random speed 40 km/h (25 mph) or more. Malfunctions in this system can be investigated by the following methods.

Cruise control system diagnostic trouble codes

The cruise control system consists of the PHEV-ECU, control switches and sensors. The switches and sensors monitor the state of the vehicle. The PHEV-ECU controls the throttle valve opening angle in the throttle body in accordance with the input signals from the switches and sensors. If the PHEV-ECU detects a malfunction on any of those components, the PHEV-ECU estimates where the problem may be occurring, and will set a diagnostic trouble code. Diagnostic trouble codes cover the cruise control switch, stoplight switch and PHEV-ECU.