DTC U0405-86: Invalid Data Received From Cruise Control Module - Signal invalid: Action
- Check the operation of the speed control switchpack switches. Free any stuck switches or install a new speed control switchpack as necessary
- Refer to the electrical circuit diagrams and check the speed control switchpack power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary
- Refer to the electrical circuit diagrams and check the speed control switchpack LIN bus 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, clear the Diagnostic Trouble Code(s) and retest. If the fault persists, install a new speed control switchpack