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.

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HOMESERVICE MANUALSJAGUAR2016XJR BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXDIAGNOSTIC TROUBLE CODE INDEX DTC: AUTOMATIC TEMPERATURE CONTROL MODULE (ATCM) -- XJ/X351DIAGNOSTIC TROUBLE CODE (DTC) INDEX DTC: AUTOMATIC TEMPERATURE CONTROL MODULE (ATCM)DESCRIPTION AND OPERATIONAUTOMATIC TEMPERATURE CONTROL MODULE (ATCM)DTC B134C-87: LEFT FRONT FACE DAMPER MOTOR - MISSING MESSAGEPOSSIBLE CAUSES

2016 Jaguar XJR Base

Possible Causes

2016 Jaguar XJR BaseSECTION Possible Causes

NOTE: Circuit reference LIN 2 PWR/LIN 2 GND/LIN 2 BUS

Front left face distribution motor power or ground circuit open circuit, high resistance
LIN circuit short circuit to ground, short circuit to power, open circuit, high resistance
Front left face distribution motor failure

RENDER: 1.0x

NO RELATED

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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.