Symptom Chart

WARNING: This page is about a different variant/trim than selected.

SYMPTOM	POSSIBLE CAUSE	ACTION
Speed control inhibited or disabled	Power or ground supply to adaptive cruise control module Steering wheel speed control switch/circuits Throttle sensors Brake switch ABS fault Speed control sensor obstructed DADC	Check for Diagnostic Trouble Code(s) that could be caused by power or ground failure to the module and refer to DTC index Check for sticking, jammed and broken speed control switches. Refer to the electrical circuit diagrams and check speed control switch circuits for short circuit, open circuit, high resistance Check for engine throttle position sensor Diagnostic Trouble Code(s) and refer to the relevant DTC index Check for correct installation and adjustment of brake switch. Refer to the electrical circuit diagrams and check brake switch circuits for short circuit, open circuit, high resistance Check ABS system for related Diagnostic Trouble Code(s) and refer to the relevant DTC index Make sure there is no snow, ice or other obstruction on the trim panel in front of the speed control radar. Adaptive cruise control will not engage until the radar has detected valid target(s) Using the Jaguar Land Rover approved diagnostic equipment, check the DADC for any CCM related Diagnostic Trouble Codes and refer to the relevant DTC index
Unable to regulate/adjust vehicle speed	Steering wheel switch malfunction	Check for sticking, jammed and broken speed control switches. Refer to the electrical circuit diagrams and check speed control switch circuits for short circuit, open circuit, high resistance
Unable to cancel speed control from steering wheel	Steering wheel switch malfunction	Check for sticking, jammed and broken speed control switches. Refer to the electrical circuit diagrams and check speed control switch circuits for short circuit, open circuit, high resistance
Unable to cancel speed control from brake pedal	Brake switch malfunction	Check for correct installation and adjustment of brake switch. Refer to the electrical circuit diagrams and check brake switch circuits for short, open circuit, high resistance

For a list of Diagnostic Trouble Code(s) that could be set on this vehicle, please REFER to:

DIAGNOSTIC TROUBLE CODE INDEX - DTC: CRUISE CONTROL MODULE (Description and Operation),

DIAGNOSTIC TROUBLE CODE INDEX - DTC: DRIVER ASSISTANCE DOMAIN CONTROLLER (DADC) (Description and Operation).