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 MANUALSJAGUAR1985VANDEN PLAS L6-4.2LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGRELAYS AND MODULES - HVACCONTROL MODULE HVACTESTING AND INSPECTIONSERVO CONTROL UNIT
1985 Jaguar Vanden Plas L6-4.2L
Servo Control Unit
1985 Jaguar Vanden Plas L6-4.2LSECTION Servo Control Unit
Servo Control Unit
Testing: Check continuity and operation of microswitches.
Do not apply 12 volts to servo motor.
Feedback potentiometer - check continuity resistance.
Servo Control Unit:
Servo Control Unit Operation:
Servo Control Unit:
Testing: Check continuity and operation of microswitches.
Do not apply 12 volts to servo motor.
Feedback potentiometer - check continuity resistance.
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.