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.
1992 Jaguar XJS 2D ConvertibleFACTORY OEM SERVICE PROCEDURE
Fluid Level Warning Switch
NOTE:
Some testing on pressure warning switch is referenced in this procedure. Pressure warning switch is electrically tied to fluid level warning switch.
- Turn ignition on and wait till pump stops running. Turn ignition off. Using DVOM, check for continuity between terminals No. 9 and 10 of ABS ECU connector. If continuity exists, fluid level and pressure warning switches are okay; go to step 4). If continuity does not exist, go to next step.
- Disconnect reservoir connector. Check for continuity between reservoir terminals No. 1 and 2. If continuity exists, go to next step. If continuity does not exist, ensure fluid level is full. If fluid level is okay, replace reservoir switch.
- Disconnect pressure warning switch connector. Check for continuity between pressure warning switch terminals No. 3 and 5. If continuity exists, go to next step. If continuity does not exist, replace pressure warning switch.
- Ensure ignition is off. Using DVOM, check for continuity between terminals No. 1 and 9 of ABS ECU and then terminals No. 1 and 10 of ABS ECU. Continuity should not exist. If continuity exists, check fluid level warning switch and/or pressure warning switch for a short to ground. If switches are okay, check wiring harness between fluid level warning switch, pressure warning switch and ABS ECU for a short to ground. Repair wiring as necessary.
Factory Service Tools
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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.