DTC U0405-86: Invalid Data Received From Cruise Control Module - Signal invalid: Action
- Vehicle Conditions to Enable DTC Setting Strategy
- Turn Ignition on and wait for a few seconds. Active cruise control is not required
- Prioritized Checks to Perform
- Refer to the electrical circuit diagrams and check the adaptive cruise control module power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary
- Refer to the electrical circuit diagrams and check the high speed CAN (chassis) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
- Refer to the electrical circuit diagrams and check the FlexRay network circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
- Using the Jaguar Land Rover approved diagnostic equipment, check the adaptive cruise control module for related Diagnostic Trouble Code(s) and refer to the relevant DTC index