Brake Fluid Level Switch Functional Check and Replacement
CHECK
PROCEDURE
1. Disconnect the switch electrical connector and remove the cover from the master cylinder reservoir.

2. Check that the float moves freely. If signs of sticking are found, replace the assembly. Using an ohmmeter, verify there is no continuity between the switch connector terminals with the float raised, and that there is continuity with the float lowered.

3. Verify there is continuity between the connector terminals with the float lowered.
4. If the checks fail, replace the faulty switch.
REPLACEMENT
PROCEDURE
1. Disconnect the electrical wiring from the switch.
2. Remove the cover from the master cylinder reservoir and replace it as an assembly with the switch.
3. Install in the reverse order.
Test yourself
A quick Honda Accord quiz: every answer comes with an explanation and a link to the manual page.