Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSJAGUAR2016XJR BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXDIAGNOSTIC TROUBLE CODE (DTC) INDEX DTC: ADAPTIVE SPEED CONTROL MODULE (ASCM) -- XJ/X351DIAGNOSTIC TROUBLE CODE (DTC) INDEX DTC: ADAPTIVE SPEED CONTROL MODULE (ASCM)DESCRIPTION AND OPERATIONADAPTIVE SPEED CONTROL MODULE (ASCM)U0001-87 HIGH SPEED CAN COMMUNICATION BUS - MISSING MESSAGEACTION
2016 Jaguar XJR Base
U0001-87 High Speed CAN Communication Bus - Missing message: Action
2016 Jaguar XJR BaseSECTION Action
- Using the Jaguar Land Rover approved diagnostic equipment, check the snapshot data to determine the missing message source control module. Refer to the electrical circuit diagrams and check the relevant control module power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary
- Using the Jaguar Land Rover approved diagnostic equipment, perform a CAN network integrity test. Refer to the electrical circuit diagrams and check the high speed CAN bus (powertrain) 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 snapshot data to determine the missing message source control module. Check the relevant control module for related DTCs and refer to the relevant DTC index
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.